February 2012 Doc ID 2574 Rev 25 1/50
50
LFxxAB
LFxxC
Very low drop voltage regulators with inhibit
Features
Very low dropout voltage (0.45 V)
Very low quiescent current (typ. 50 µA in OFF
mode, 500 µA in ON mode)
Output current up to 500 mA
Logic-controlled electronic shutdown
Output voltages of 1.5; 1.8; 2.5; 3.3; 4.7; 5; 6;
8; 8.5; 9; 12 V
Automotive Grade product: 1.8 V, 2.5 V, 3.3 V,
5.0 V, 8.0 V, 8.5 V VOUT in DPAK and PPAK
packages
Internal current and thermal limit
Only 2.2 µF for stability
Available in ± 1 % (AB) or ± 2 % (C) selection
at 25 °C
Supply voltage rejection: 80 db (typ.)
Temperature range: -40 to 125 °C
Description
The LFxxAB/LFxxC are very low drop regulators
available in PENTAWATT, TO-220, TO-220FP,
DPAK and PPAK package and in a wide range of
output voltages. The very low drop voltage (0.45
V) and the very low quiescent current make them
particularly suitable for low noise, low power
applications and specially in battery powered
systems. In the 5 pins configuration (PENTAWATT
and PPAK) a shutdown logic control function is
available (pin 2, TTL compatible). This means that
when the device is used as a local regulator, it is
possible to put a part of the board in standby,
decreasing the total power consumption. In the
three terminal configuration the device has the
same electrical performance, but is fixed in the
ON state. It requires only a 2.2 µF capacitor for
stability allowing space and cost saving. The LFxx
is available as Automotive Grade in DPAK and
PPAK packages, for the options of output voltages
whose commercial part numbers are shown in the
order codes. These devices are qualified
according to the specification AEC-Q100 of the
Automotive market, in the temperature range - 40
°C to 125 °C, and the statistical tests PAT, SYL,
SBL are performed.
TO-220FP
PENTAWATT
TO-220
DPAKPPAK
Table 1. Device summary
Part numbers
LF15AB LF25C LF33AB LF60C LF80AB LF90C LF120AB
LF18C LF25AB LF50C LF60AB LF85C LF90AB
LF18AB LF33C LF50AB LF80C LF85AB LF120C
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Contents LFxxAB, LFxxC
2/50 Doc ID 2574 Rev 25
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
LFxxAB, LFxxC List of tables
Doc ID 2574 Rev 25 3/50
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Electrical characteristics for LF15AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Electrical characteristics for LF18AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 6. Electrical characteristics for LF18C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 7. Electrical characteristics for LF18CDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . . 11
Table 8. Electrical characteristics for LF25AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 9. Electrical characteristics for LF25ABDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . 13
Table 10. Electrical characteristics for LF25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 11. Electrical characteristics for LF25CDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . . 15
Table 12. Electrical characteristics for LF33AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 13. Electrical characteristics for LF33C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 14. Electrical characteristics for LF33CDT-TRY and LF33CPT-TRY (Automotive Grade) . . . . 18
Table 15. Electrical characteristics for LF50AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 16. Electrical characteristics for LF50ABDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . 20
Table 17. Electrical characteristics for LF50C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 18. Electrical characteristics for LF50CDT-TRY and LF50CPT-TRY (Automotive Grade) . . . . 22
Table 19. Electrical characteristics for LF60AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 20. Electrical characteristics for LF60C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 21. Electrical characteristics for LF80AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 22. Electrical characteristics for LF80C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 23. Electrical characteristics for LF80CDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . . 27
Table 24. Electrical characteristics for LF85AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 25. Electrical characteristics for LF85C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 26. Electrical characteristics for LF85CDT-TRY and LF85CPT-TRY (Automotive Grade) . . . . 30
Table 27. Electrical characteristics for LF90AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 28. Electrical characteristics for LF90C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 29. Electrical characteristics for LF120AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 30. Electrical characteristics for LF120C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 31. TO-220 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 32. Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 33. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
List of figures LFxxAB, LFxxC
4/50 Doc ID 2574 Rev 25
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Dropout voltage vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 5. Dropout voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 6. Supply current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 7. Supply current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 8. Short circuit current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 9. Supply current vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 10. Logic controlled precision 3.3 / 5.0 V selectable output . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 11. Sequential multi-output supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 12. Multiple supply with ON / OFF toggle switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 13. Basic inhibit functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 14. Delayed turn-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 15. Low voltage bulb blinker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 16. Drawing dimension TO-220 (type STD-ST Dual Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 17. Drawing dimension TO-220 (type STD-ST Single Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 18. Drawing dimension tube for TO-220 Dual Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 19. Drawing dimension tube for TO-220 Single Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . 42
LFxxAB, LFxxC Diagram
Doc ID 2574 Rev 25 5/50
1 Diagram
Figure 1. Block diagram
Pin configuration LFxxAB, LFxxC
6/50 Doc ID 2574 Rev 25
2 Pin configuration
Figure 2. Pin connections (top view)
TO-220FP
DPAK
TO-220
PPAK
PENTAWATT
LFxxAB, LFxxC Maximum ratings
Doc ID 2574 Rev 25 7/50
3 Maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
VIDC input voltage -0.5 to 40(1)
1. For 18 < VI < 40 the regulator is in shut-down
V
IOOutput current Internally limited
PTOT Power dissipation Internally limited
TSTG Storage temperature range -40 to 150 °C
TOP Operating junction temperature range -40 to 125 °C
Table 3. Thermal data
Symbol Parameter PENTAWATT TO-220 TO-220FP DPAK/PPAK Unit
RthJC Thermal resistance junction-case 3 5 5 8 °C/W
RthJA Thermal resistance junction-ambient 50 50 60 100 °C/W
Figure 3. Test circuit
Electrical characteristics LFxxAB, LFxxC
8/50 Doc ID 2574 Rev 25
4 Electrical characteristics
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 4. Electrical characteristics for LF15AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 3.5 V 1.485 1.5 1.515 V
IO = 50 mA, VI = 3.5 V, Ta = -25 to 85°C 1.470 1.530
VIOperating input voltage IO = 500 mA 2.5 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 2.5 to 16 V, IO = 5 mA 2 10 mV
ΔVOLoad regulation VI = 2.8 V, IO = 5 to 500 mA 2 10 mV
IdQuiescent current
VI = 2.5 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 2.8 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 3.5 ± 1 V
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 1 V
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 9/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 5. Electrical characteristics for LF18AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 3.3 V 1.782 1.8 1.818 V
IO = 50 mA, VI = 3.3 V, Ta = -25 to 85°C 1.764 1.836
VIOperating input voltage IO = 500 mA 3 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 2.8 to 16 V, IO = 5 mA 2 12 mV
ΔVOLoad regulation VI = 3.3 V, IO = 5 to 500 mA 2 10 mV
IdQuiescent current
VI = 2.5 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 3.1 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 3.5 ± 1 V
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.7 V
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
10/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 6. Electrical characteristics for LF18C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 3.5 V 1.764 1.8 1.836 V
IO = 50 mA, VI = 3.5 V, Ta = -25 to 85°C 1.728 1.872
VIOperating input voltage IO = 500 mA 3 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 2.8 to 16 V, IO = 5 mA 2 12 mV
ΔVOLoad regulation VI = 3.3 V, IO = 5 to 500 mA 2 10 mV
IdQuiescent current
VI = 2.5 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 3.1 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 3.5 ± 1 V
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.7 V
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 11/50
Refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 7. Electrical characteristics for LF18CDT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 3.5 V, Ta = 25°C 1.764 1.8 1.836 V
IO = 50 mA, VI = 3.5 V 1.713 1.887
VIOperating input voltage IO = 500 mA 3 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 2.8 to 16 V, IO = 5 mA 2 15 mV
ΔVOLoad regulation VI = 3.3 V, IO = 5 to 500 mA 2 15 mV
IdQuiescent current
VI = 2.5 to 16V, IO = 0mA ON MODE 0.5 2 mA
VI = 3.1 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 120 µA
SVR Supply voltage rejection IO = 5 mA, VI = 3.5 ± 1 V
Ta = 25°C
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
12/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 8. Electrical characteristics for LF25AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 4.5 V 2.475 2.5 2.525 V
IO = 50 mA, VI = 4.5 V, Ta = -25 to 85°C 2.450 2.550
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 3.5 to 16 V, IO = 5 mA 2 12 mV
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 12 mV
IdQuiescent current
VI = 3.5 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 3.8 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 4.5 ± 1 V
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 13/50
Refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 9. Electrical characteristics for LF25ABDT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 4.5 V, Ta = 25°C 2.475 2.5 2.525 V
IO = 50 mA, VI = 4.5 V 2.435 2.565
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 3.5 to 16 V, IO = 5 mA 2 15 mV
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 15 mV
IdQuiescent current
VI = 3.5 to 16V, IO = 0mA ON MODE 0.5 2 mA
VI = 3.8 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 120 µA
SVR Supply voltage rejection IO = 5 mA, VI = 4.5 ± 1 V
Ta = 25°C
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
14/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 10. Electrical characteristics for LF25C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 4.5 V 2.45 2.5 2.55 V
IO = 50 mA, VI = 4.5 V, Ta = -25 to 85°C 2.4 2.6
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 3.5 to 16 V, IO = 5 mA 2 12 mV
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 12 mV
IdQuiescent current
VI = 3.5 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 3.8 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 4.5 ± 1 V
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 15/50
Refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 11. Electrical characteristics for LF25CDT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 4.5 V, Ta = 25°C 2.45 2.5 2.55 V
IO = 50 mA, VI = 4.5 V 2.385 2.615
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 3.5 to 16 V, IO = 5 mA 2 15 mV
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 15 mV
IdQuiescent current
VI = 3.5 to 16V, IO = 0mA ON MODE 0.5 2 mA
VI = 3.8 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 120 µA
SVR Supply voltage rejection IO = 5 mA, VI = 4.5 ± 1 V
Ta = 25°C
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
16/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 12. Electrical characteristics for LF33AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 5.3 V 3.267 3.3 3.333 V
IO = 50 mA, VI = 5.3 V, Ta = -25 to 85°C 3.234 3.366
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 4.3 to 16 V, IO = 5 mA 3 16 mV
ΔVOLoad regulation VI = 4.6 V, IO = 5 to 500 mA 3 16 mV
IdQuiescent current
VI = 4.3 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 4.6 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 5.3 ± 1 V
f = 120 Hz 80
dBf = 1 kHz 75
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 17/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 13. Electrical characteristics for LF33C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 5.3 V 3.234 3.3 3.366 V
IO = 50 mA, VI = 5.3 V, Ta = -25 to 85°C 3.168 3.432
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 4.3 to 16 V, IO = 5 mA 3 16 mV
ΔVOLoad regulation VI = 4.6 V, IO = 5 to 500 mA 3 16 mV
IdQuiescent current
VI = 4.3 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 4.6 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 5.3 ± 1 V
f = 120 Hz 80
dBf = 1 kHz 75
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
18/50 Doc ID 2574 Rev 25
Refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 14. Electrical characteristics for LF33CDT-TRY and LF33CPT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 5.3 V, Ta = 25°C 3.234 3.3 3.366 V
IO = 50 mA, VI = 5.3 V, 3.153 3.447
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 4.3 to 16 V, IO = 5 mA 3 19 mV
ΔVOLoad regulation VI = 4.6 V, IO = 5 to 500 mA 3 19 mV
IdQuiescent current
VI = 4.3 to 16V, IO = 0mA ON MODE 0.5 2 mA
VI = 4.6 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 120 µA
SVR Supply voltage rejection IO = 5 mA, VI = 5.3 ± 1 V
Ta = 25°C
f = 120 Hz 80
dBf = 1 kHz 75
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 KHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 19/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 15. Electrical characteristics for LF50AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 7 V 4.95 5 5.05 V
IO = 50 mA, VI = 7 V, Ta = -25 to 85°C 4.9 5.1
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 6 to 16 V, IO = 5 mA 5 25 mV
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 25 mV
IdQuiescent current
VI = 6 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 6.3 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 7 ± 1 V
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
20/50 Doc ID 2574 Rev 25
Refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 16. Electrical characteristics for LF50ABDT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 7 V, Ta = 25°C 4.95 5 5.05 V
IO = 50 mA, VI = 7 V 4.885 5.115
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 6 to 16 V, IO = 5 mA 5 28 mV
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 28 mV
IdQuiescent current
VI = 6 to 16V, IO = 0mA ON MODE 0.5 2 mA
VI = 6.3 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 120 µA
SVR Supply voltage rejection IO = 5 mA, VI = 7 ± 1 V
Ta = 25°C
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 21/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 17. Electrical characteristics for LF50C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 7 V 4.9 5 5.1 V
IO = 50 mA, VI = 7 V, Ta = -25 to 85°C 4.8 5.2
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 6 to 16 V, IO = 5 mA 5 25 mV
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 25 mV
IdQuiescent current
VI = 6 to 16V, IO = 0mA ON MODE 0.5 1 mA
VI = 6.3 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 100 µA
SVR Supply voltage rejection IO = 5 mA, VI = 7 ± 1 V
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 6 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
22/50 Doc ID 2574 Rev 25
Refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 18. Electrical characteristics for LF50CDT-TRY and LF50CPT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 7 V, Ta = 25°C 4.9 5 5.1 V
IO = 50 mA, VI = 7 V 4.785 5.215
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 6 to 16 V, IO = 5 mA 5 28 mV
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 28 mV
IdQuiescent current
VI = 6 to 16V, IO = 0mA ON MODE 0.5 2 mA
VI = 6.3 to 16V, IO=500mA 12
VI = 6 V OFF MODE 50 120 µA
SVR Supply voltage rejection IO = 5 mA, VI = 7 ± 1 V
Ta = 25°C
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 23/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 19. Electrical characteristics for LF60AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 8 V 5.94 6 6.06 V
IO = 50 mA, VI = 8 V, Ta = -25 to 85°C 5.88 6.12
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 7 to 16 V, IO = 5 mA 6 30 mV
ΔVOLoad regulation VI = 7.3 V, IO = 5 to 500 mA 6 30 mV
IdQuiescent current
VI = 7 to 16V, IO = 0mA ON MODE 0.7 1.5 mA
VI = 7.3 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 8 ± 1 V
f = 120 Hz 75
dBf = 1 kHz 70
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 9 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
24/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 20. Electrical characteristics for LF60C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 8 V 5.88 6 6.12 V
IO = 50 mA, VI = 8 V, Ta = -25 to 85°C 5.76 6.24
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 7 to 16 V, IO = 5 mA 6 30 mV
ΔVOLoad regulation VI = 7.3 V, IO = 5 to 500 mA 6 30 mV
IdQuiescent current
VI = 7 to 16V, IO = 0mA ON MODE 0.7 1.5 mA
VI = 7.3 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 8 ± 1 V
f = 120 Hz 75
dBf = 1 kHz 70
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 9 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 25/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 21. Electrical characteristics for LF80AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 10 V 7.92 8 8.08 V
IO = 50 mA, VI = 10 V, Ta = -25 to 85°C 7.84 8.16
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 9 to 16 V, IO = 5 mA 8 40 mV
ΔVOLoad regulation VI = 9.3 V, IO = 5 to 500 mA 8 40 mV
IdQuiescent current
VI = 9 to 16V, IO = 0mA ON MODE 0.7 1.5 mA
VI = 9.3 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 10 ± 1 V
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 9 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
26/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 22. Electrical characteristics for LF80C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 10 V 7.84 8 8.16 V
IO = 50 mA, VI = 10 V, Ta = -25 to 85°C 7.68 8.32
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 9 to 16 V, IO = 5 mA 8 40 mV
ΔVOLoad regulation VI = 9.3 V, IO = 5 to 500 mA 8 40 mV
IdQuiescent current
VI = 9 to 16V, IO = 0mA ON MODE 0.7 1.5 mA
VI = 9.3 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 10 ± 1 V
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 9 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 27/50
Refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 23. Electrical characteristics for LF80CDT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 10 V, Ta = 25°C 7.84 8 8.16 V
IO = 50 mA, VI = 10 V 7.665 8.335
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 9 to 16 V, IO = 5 mA 8 44 mV
ΔVOLoad regulation VI = 9.3 V, IO = 5 to 500 mA 8 44 mV
IdQuiescent current
VI = 9 to 16V, IO = 0mA ON MODE 0.7 2.5 mA
VI = 9.3 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 160 µA
SVR Supply voltage rejection IO = 5 mA, VI = 10 ± 1 V
Ta = 25°C
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 9 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
28/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 24. Electrical characteristics for LF85AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 10.5 V 8.415 8.5 8.585 V
IO = 50 mA, VI = 10.5 V, Ta = -25 to 85°C 8.33 8.67
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 9.5 to 16 V, IO = 5 mA 8 42 mV
ΔVOLoad regulation VI = 9.8 V, IO = 5 to 500 mA 8 42 mV
IdQuiescent current
VI = 9.5 to 16V, IO = 0mA ON MODE 0.7 1.5 mA
VI = 9.8 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 10.5 ± 1 V
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 9 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 29/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 25. Electrical characteristics for LF85C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 10.5 V 8.33 8.5 8.67 V
IO = 50 mA, VI = 10.5 V, Ta = -25 to 85°C 8.16 8.84
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 9.5 to 16 V, IO = 5 mA 8 42 mV
ΔVOLoad regulation VI = 9.8 V, IO = 5 to 500 mA 8 42 mV
IdQuiescent current
VI = 9.5 to 16V, IO = 0mA ON MODE 0.7 1.5 mA
VI = 9.8 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 10.5 ± 1 V
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 9 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
30/50 Doc ID 2574 Rev 25
Refer to the test circuits, TA = -40 to 25°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.
Table 26. Electrical characteristics for LF85CDT-TRY and LF85CPT-TRY (Automotive Grade)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 10.5 V, Ta = 25°C 8.33 8.5 8.67 V
IO = 50 mA, VI = 10.5 V 8.145 8.855
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit Ta = 25°C 1 A
ΔVOLine regulation VI = 9.5 to 16 V, IO = 5 mA 8 44 mV
ΔVOLoad regulation VI = 9.8 V, IO = 5 to 500 mA 8 44 mV
IdQuiescent current
VI = 9.5 to 16V, IO = 0mA ON MODE 0.7 2.5 mA
VI = 9.8 to 16V, IO=500mA 12
VI = 9 V OFF MODE 70 160 µA
SVR Supply voltage rejection IO = 5 mA, VI = 10.5 ± 1 V
Ta = 25°C
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz, Ta = 25°C 50 µV
VdDropout voltage IO = 200 mA 0.2 1.3 V
IO = 500 mA 0.4 1.3
VIL Control input logic low 0.8 V
VIH Control input logic high 2 V
IIControl input current VI = 9 V, VC = 6 V, Ta = 25°C 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 31/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 27. Electrical characteristics for LF90AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 11 V 8.91 9 9.09 V
IO = 50 mA, VI = 11 V, Ta = -25 to 85°C 8.82 9.18
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 10 to 16 V, IO = 5 mA 9 45 mV
ΔVOLoad regulation VI = 10.3 V, IO = 5 to 500 mA 9 45 mV
IdQuiescent current
VI = 10 to 16V, IO = 0mA
ON MODE
0.7 1.5
mA
VI = 10.3 to 16V,
IO = 500mA 12
VI = 10 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 11 ± 1 V
f = 120 Hz 71
dBf = 1 kHz 66
f = 10 kHz 56
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 10 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
32/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 28. Electrical characteristics for LF90C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 11 V 8.82 9 9.18 V
IO = 50 mA, VI = 11 V, Ta = -25 to 85°C 8.64 9.36
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 10 to 16 V, IO = 5 mA 9 45 mV
ΔVOLoad regulation VI = 10.3 V, IO = 5 to 500 mA 9 45 mV
IdQuiescent current
VI = 10 to 16V, IO = 0mA
ON MODE
0.7 1.5
mA
VI = 10.3 to 16V,
IO = 500mA 12
VI = 10 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 11 ± 1 V
f = 120 Hz 71
dBf = 1 kHz 66
f = 10 kHz 56
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 10 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Electrical characteristics
Doc ID 2574 Rev 25 33/50
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 29. Electrical characteristics for LF120AB
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 15 V 11.88 12 12.12 V
IO = 50 mA, VI = 15 V, Ta = -25 to 85°C 11.76 12.24
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 13 to 16 V, IO = 5 mA 12 60 mV
ΔVOLoad regulation VI = 13.3 V, IO = 5 to 500 mA 12 60 mV
IdQuiescent current
VI = 13 to 16V, IO = 0mA
ON MODE
0.7 1.5
mA
VI = 13.3 to 16V,
IO = 500mA 12
VI = 13 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 14 ± 1 V
f = 120 Hz 69
dBf = 1 kHz 64
f = 10 kHz 54
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 13 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
Electrical characteristics LFxxAB, LFxxC
34/50 Doc ID 2574 Rev 25
Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.
Table 30. Electrical characteristics for LF120C
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 14 V 11.76 12 12.24 V
IO = 50 mA, VI = 14 V, Ta = -25 to 85°C 11.52 12.48
VIOperating input voltage IO = 500 mA 16 V
IOOutput current limit 1 A
ΔVOLine regulation VI = 13 to 16 V, IO = 5 mA 12 60 mV
ΔVOLoad regulation VI = 13.3 V, IO = 5 to 500 mA 12 60 mV
IdQuiescent current
VI = 13 to 16V, IO = 0mA
ON MODE
0.7 1.5
mA
VI = 13.3 to 16V,
IO = 500mA 12
VI = 13 V OFF MODE 70 140 µA
SVR Supply voltage rejection IO = 5 mA, VI = 14 ± 1 V
f = 120 Hz 69
dBf = 1 kHz 64
f = 10 kHz 54
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
VdDropout voltage IO = 200 mA 0.2 0.35 V
IO = 500 mA 0.4 0.7
VIL Control input logic low Ta = -40 to 125°C 0.8 V
VIH Control input logic high Ta = -40 to 125°C 2 V
IIControl input current VI = 13 V, VC = 6 V 10 µA
CO
Output bypass
capacitance ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 10 µF
LFxxAB, LFxxC Typical performance characteristics
Doc ID 2574 Rev 25 35/50
5 Typical performance characteristics
Unless otherwise specified VO(NOM) = 3.3 V.
Figure 4. Dropout voltage vs. output current Figure 5. Dropout voltage vs. temperature
Figure 6. Supply current vs. input voltage Figure 7. Supply current vs. input voltage
Figure 8. Short circuit current vs. input
voltage
Figure 9. Supply current vs. temperature
Typical performance characteristics LFxxAB, LFxxC
36/50 Doc ID 2574 Rev 25
Figure 10. Logic controlled precision 3.3 / 5.0 V selectable output
Figure 11. Sequential multi-output supply
LFxxAB, LFxxC Typical performance characteristics
Doc ID 2574 Rev 25 37/50
Figure 12. Multiple supply with ON / OFF toggle switch
Figure 13. Basic inhibit functions
Typical performance characteristics LFxxAB, LFxxC
38/50 Doc ID 2574 Rev 25
Figure 14. Delayed turn-on
Figure 15. Low voltage bulb blinker
LFxxAB, LFxxC Package mechanical data
Doc ID 2574 Rev 25 39/50
6 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at:
www.st.com
.
ECOPACK® is an ST trademark.
In spite of some difference in tolerances, the packages are compatible.
Table 31. TO-220 mechanical data
Dim.
Type STD - ST Dual Gauge Type STD - ST Single Gauge
mm. mm.
Min. Typ. Max. Min. Typ. Max.
A 4.40 4.60 4.40 4.60
b 0.61 0.88 0.61 0.88
b1 1.14 1.70 1.14 1.70
c 0.48 0.70 0.48 0.70
D 15.25 15.75 15.25 15.75
D1 1.27
E 10.00 10.40 10.00 10.40
e 2.40 2.70 2.40 2.70
e1 4.95 5.15 4.95 5.15
F 1.23 1.32 0.51 0.60
H1 6.20 6.60 6.20 6.60
J1 2.40 2.72 2.40 2.72
L 13.00 14.00 13.00 14.00
L1 3.50 3.93 3.50 3.93
L20 16.40 16.40
L30 28.90 28.90
P 3.75 3.85 3.75 3.85
Q 2.65 2.95 2.65 2.95
Package mechanical data LFxxAB, LFxxC
40/50 Doc ID 2574 Rev 25
Note: 1 Maximum resin gate protrusion: 0.5 mm.
2 Resin gate position is accepted in each of the two positions shown on the drawing, or their
symmetrical.
Figure 16. Drawing dimension TO-220 (type STD-ST Dual Gauge)
0015988_S
LFxxAB, LFxxC Package mechanical data
Doc ID 2574 Rev 25 41/50
Figure 17. Drawing dimension TO-220 (type STD-ST Single Gauge)
8174627_B
Package mechanical data LFxxAB, LFxxC
42/50 Doc ID 2574 Rev 25
Figure 18. Drawing dimension tube for TO-220 Dual Gauge (mm.)
Figure 19. Drawing dimension tube for TO-220 Single Gauge (mm.)
LFxxAB, LFxxC Package mechanical data
Doc ID 2574 Rev 25 43/50
Dim. mm. inch.
Min. Typ. Max. Min. Typ. Max.
A4.80.189
C1.37 0.054
D 2.4 2.80.094 0.110
D1 1.2 1.35 0.047 0.053
E0.35 0.55 0.014 0.022
F0.81.05 0.031 0.041
F1 1 1.4 0.039 0.055
G3.2 3.4 3.6 0.126 0.134 0.142
G1 6.6 6.87 0.260 0.2680.276
H2 10.4 0.409
H310.05 10.4 0.396 0.409
L 17.85 0.703
L1 15.75 0.620
L2 21.4 0.843
L322.5 0.886
L5 2.6 30.102 0.118
L6 15.1 15.80.594 0.622
L7 6 6.6 0.236 0.260
M 4.5 0.177
M1 4 0.157
Dia13.65 3.85 0.144 0.152
PENTAWATT (Vertical) mechanical data
P010E
Package mechanical data LFxxAB, LFxxC
44/50 Doc ID 2574 Rev 25
Dim. mm. inch.
Min. Typ Max. Min. Typ. Max.
A 4.40 4.60 0.1730.181
B 2.5 2.7 0.098 0.106
D 2.5 2.75 0.098 0.108
E 0.45 0.70 0.017 0.027
F 0.75 1 0.0300.039
F1 1.15 1.50 0.045 0.059
F2 1.15 1.50 0.045 0.059
G4.95 5.2 0.194 0.204
G1 2.4 2.7 0.094 0.106
H 10.0 10.40 0.393 0.409
L2 16 0.630
L328.6 30.6 1.126 1.204
L4 9.810.6 0.3850.417
L5 2.93.6 0.114 0.142
L6 15.916.4 0.626 0.645
L7 99.30.354 0.366
DIA. 33.2 0.1180.126
TO-220FP mechanical data
7012510A-
H
LFxxAB, LFxxC Package mechanical data
Doc ID 2574 Rev 25 45/50
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 2.2 2.4 0.086 0.094
A1 0.91.1 0.035 0.043
A2 0.030.230.001 0.009
B 0.64 0.90.025 0.035
b4 5.2 5.4 0.204 0.212
C 0.45 0.6 0.017 0.023
C2 0.480.6 0.0190.023
D 6 6.2 0.236 0.244
D1 5.1 0.200
E 6.4 6.6 0.252 0.260
E1 4.7 0.185
e2.280.090
e1 4.4 4.6 0.1730.181
H9.35 10.1 0.3680.397
L 1 0.039
(L1) 2.80.110
L2 0.80.031
L4 0.6 1 0.0230.039
R 0.2 0.008
V2 8°0° 8°
DPAK mechanical data
0068772-F
Package mechanical data LFxxAB, LFxxC
46/50 Doc ID 2574 Rev 25
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 2.2 2.4 0.086 0.094
A1 0.91.1 0.035 0.043
A2 0.030.230.001 0.009
B 0.4 0.6 0.015 0.023
B2 5.2 5.4 0.204 0.212
C 0.45 0.6 0.017 0.023
C2 0.480.6 0.0190.023
D 6 6.2 0.236 0.244
D1 5.1 0.201
E 6.4 6.6 0.252 0.260
E1 4.7 0.185
e 1.27 0.050
G4.95.25 0.193 0.206
G1 2.38 2.7 0.093 0.106
H9.35 10.1 0.3680.397
L2 0.81 0.0310.039
L4 0.6 1 0.0230.039
L5 1 0.039
L6 2.80.110
PPAK mechanical data
0078180-E
LFxxAB, LFxxC Package mechanical data
Doc ID 2574 Rev 25 47/50
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A330 12.992
C12.813.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N60 2.362
T22.40.882
Ao 6.806.90 7.00 0.2680.272 0.2.76
Bo 10.40 10.50 10.60 0.4090.4130.417
Ko 2.55 2.65 2.75 0.100 0.104 0.105
Po 3.94.0 4.1 0.1530.157 0.161
P7.98.0 8.1 0.311 0.315 0.319
Tape & reel DPAK-PPAK mechanical data
Order codes LFxxAB, LFxxC
48/50 Doc ID 2574 Rev 25
7 Order codes
Table 32. Order codes
Packages Output
voltages
TO-220 TO-220FP DPAK (tape and reel) PPAK PPAK (tape and reel)
LF15ABV (1)
1. Available on request.
LF15ABP (1) LF15ABDT-TR LF15ABPT (1) 1.5 V
LF18CP(1) LF18CDT-TR LF18CPT-TR 1.8 V
LF18CDT-TRY (2)
2. Automotive Grade products.
1.8 V
LF18ABP (1) LF18ABDT-TR LF18ABPT-TR 1.8 V
LF25CP (1) LF25CDT-TR LF25CPT-TR 2.5 V
LF25CDT-TRY (2) 2.5 V
LF25ABP (1) LF25ABDT-TR LF25ABPT (1) 2.5 V
LF25ABDT-TRY (2) 2.5 V
LF33CV LF33CDT-TR LF33CPT-TR 3.3 V
LF33CV-DG (3)
3. TO-220 Dual Gauge frame.
LF33CDT-TRY (2) LF33CPT-TRY (2) 3.3 V
LF33ABV LF33ABDT-TR 3.3 V
LF33ABV-DG (3) 3.3 V
LF50CV LF50CDT-TR LF50CPT-TR 5 V
LF50CDT-TRY (2) LF50CPT-TRY (2) 5 V
LF50ABV LF50ABP LF50ABDT-TR LF50ABPT-TR 5 V
LF50ABDT-TRY (2) 5 V
LF60CV LF60CP (1) LF60CDT-TR LF60CPT-TR (1) 6 V
LF60ABV LF60ABP (1) LF60ABDT-TR LF60ABPT (1) LF60ABPT-TR (1) 6 V
LF80CV LF80CP (1) LF80CDT-TR 8 V
LF80CDT-TRY (2) 8 V
LF80ABV LF80ABP (1) LF80ABDT-TR 8 V
LF85CDT-TR LF85CPT-TR 8.5 V
LF85CDT-TRY (2) LF85CPT-TRY (2) 8.5 V
LF85ABPT (1) LF85ABPT-TR 8.5 V
LF90CV LF90CP (1) LF90CDT-TR LF90CPT-TR 9 V
LF90ABP (1) 9 V
LF120CP (1) LF120CDT-TR 12 V
LF120ABV LF120ABDT-TR LF120ABPT (1) 12 V
LFxxAB, LFxxC Revision history
Doc ID 2574 Rev 25 49/50
8 Revision history
Table 33. Document revision history
Date Revision Changes
21-Jun-2004 14 Document updating.
24-May-2006 15 Order codes updated.
02-Apr-2007 16 Order codes updated.
14-May-2007 17 Order codes updated.
26-Jul-2007 18 Add
Table 1
in cover page.
26-Nov-2007 19 Modified:
Ta b l e 3 2
.
16-Jan-2008 20 Added new order codes for Automotive grade products see
Table 32 on
page 48
.
12-Feb-2008 21 Modified:
Table 32 on page 48
.
10-Jul-2008 22 Modified:
Table 32 on page 48
.
05-May-2010 23 Added:
Table 31 on page 39
,
Figure 16 on page 40
,
Figure 17 on page 41
,
Figure 18
and
Figure 19 on page 42
.
16-Nov-2010 24 Modified: RthJC value for TO-220
Table 3 on page 7
.
10-Feb-2012 25 Added: order code LF33CV-DG and LF33ABV-DG
Table 32 on page 48
.
LFxxAB, LFxxC
50/50 Doc ID 2574 Rev 25
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