February 2008 Rev 21 1/49
49
LFxxAB
LFxxC
Very low drop voltage regulators with inhibit
Features
■Very low dropout voltage (0.45V)
■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; 12V
■Automotive Grade product: 1.8V, 2.5V, 3.3V,
5.0V, 8.0V, 8.5V 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: 80db (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 Ta b l e 3 2 (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
LF15C LF18AB LF33C LF50C LF60AB LF85C LF90AB
LF15AB LF25C LF33AB LF50AB LF80C LF85AB LF120C
LF18C LF25AB LF47C LF60C LF80AB LF90C LF120AB
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Contents LFxxAB - LFxxC
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Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
LFxxAB - LFxxC List of figures
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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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 5. Dropout voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 6. Supply current vs input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 7. Supply current vs input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 8. Short circuit current vs input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 9. Supply current vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 10. Logic controlled precision 3.3/5.0 V selectable output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 11. Sequential multi-output supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 12. Multiple supply with ON/OFF toggle switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 13. Basic inhibit functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 14. Delayed turn-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 15. Low voltage bulb blinker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
List of tables LFxxAB - LFxxC
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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 LF15C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 6. Electrical characteristics for LF18AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 7. Electrical characteristics for LF18C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 8. Electrical characteristics for LF18CDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . . 12
Table 9. Electrical characteristics for LF25AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 10. Electrical characteristics for LF25ABDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . 14
Table 11. Electrical characteristics for LF25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 12. Electrical characteristics for LF25CDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . . 16
Table 13. Electrical characteristics for LF33AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 14. Electrical characteristics for LF33C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 15. Electrical characteristics for LF33CDT-TRY and LF33CPT-TRY (Automotive Grade). . . . 19
Table 16. Electrical characteristics for LF50AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 17. Electrical characteristics for LF50ABDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . 21
Table 18. Electrical characteristics for LF50C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 19. Electrical characteristics for LF50CDT-TRY and LF50CPT-TRY (Automotive Grade). . . . 23
Table 20. Electrical characteristics for LF60AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 21. Electrical characteristics for LF60C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 22. Electrical characteristics for LF80AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 23. Electrical characteristics for LF80C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 24. Electrical characteristics for LF80CDT-TRY (Automotive Grade). . . . . . . . . . . . . . . . . . . . 28
Table 25. Electrical characteristics for LF85AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 26. Electrical characteristics for LF85C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 27. Electrical characteristics for LF85CDT-TRY and LF85CPT-TRY (Automotive Grade). . . . 31
Table 28. Electrical characteristics for LF90AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 29. Electrical characteristics for LF90C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 30. Electrical characteristics for LF120AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 31. Electrical characteristics for LF120C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 32. Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 33. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
LFxxAB - LFxxC Diagram
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1 Diagram
Figure 1. Block diagram
Pin configuration LFxxAB - LFxxC
6/49
2 Pin configuration
Figure 2. Pin connections (top view)
TO-220FP
DPAK
TO-220
PPAK
PENTAWATT
LFxxAB - LFxxC Maximum ratings
7/49
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 3 5 8 °C/W
RthJA Thermal resistance junction-ambient 50 50 60 100 °C/W
Figure 3. Test circuit
Electrical characteristics LFxxAB - LFxxC
8/49
4 Electrical characteristics
Table 4. Electrical characteristics for LF15AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
9/49
Table 5. Electrical characteristics for LF15C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 3.5 V 1.47 1.5 1.53 V
IO = 50 mA, VI = 3.5 V, Ta = -25 to 85°C 1.44 1.56
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
Electrical characteristics LFxxAB - LFxxC
10/49
Table 6. Electrical characteristics for LF18AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
11/49
Table 7. Electrical characteristics for LF18C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
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Table 8. Electrical characteristics for LF18CDT-TRY (Automotive Grade) (refer to the test
circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
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Table 9. Electrical characteristics for LF25AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
14/49
Table 10. Electrical characteristics for LF25ABDT-TRY (Automotive Grade) (refer to the test
circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
15/49
Table 11. Electrical characteristics for LF25C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
16/49
Table 12. Electrical characteristics for LF25CDT-TRY (Automotive Grade) (refer to the test
circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
17/49
Table 13. Electrical characteristics for LF33AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
18/49
Table 14. Electrical characteristics for LF33C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
19/49
Table 15. Electrical characteristics for LF33CDT-TRY and LF33CPT-TRY (Automotive Grade)
(refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.)
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
Electrical characteristics LFxxAB - LFxxC
20/49
Table 16. Electrical characteristics for LF50AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 7 V 4.9555.05V
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
LFxxAB - LFxxC Electrical characteristics
21/49
Table 17. Electrical characteristics for LF50ABDT-TRY (Automotive Grade) (refer to the test
circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
22/49
Table 18. Electrical characteristics for LF50C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
23/49
Table 19. Electrical characteristics for LF50CDT-TRY and LF50CPT-TRY (Automotive Grade)
(refer to the test circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 μF unless otherwise
specified.)
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
Electrical characteristics LFxxAB - LFxxC
24/49
Table 20. Electrical characteristics for LF60AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 8 V 5.9466.06V
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
LFxxAB - LFxxC Electrical characteristics
25/49
Table 21. Electrical characteristics for LF60C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage IO = 50 mA, VI = 8 V 5.8866.12V
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
Electrical characteristics LFxxAB - LFxxC
26/49
Table 22. Electrical characteristics for LF80AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
27/49
Table 23. Electrical characteristics for LF80C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
28/49
Table 24. Electrical characteristics for LF80CDT-TRY (Automotive Grade) (refer to the test
circuits, TA = -40 to 125°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
29/49
Table 25. Electrical characteristics for LF85AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
30/49
Table 26. Electrical characteristics for LF85C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
31/49
Table 27. Electrical characteristics for LF85CDT-TRY and LF85CPT-TRY (Automotive Grade)
(refer to the test circuits, TA = -40 to 25°C, CI = 0.1 µF, CO = 2.2 µF unless otherwise
specified.)
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
Electrical characteristics LFxxAB - LFxxC
32/49
Table 28. Electrical characteristics for LF90AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
33/49
Table 29. Electrical characteristics for LF90C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
Electrical characteristics LFxxAB - LFxxC
34/49
Table 30. Electrical characteristics for LF120AB (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
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
LFxxAB - LFxxC Electrical characteristics
35/49
Table 31. Electrical characteristics for LF120C (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified).
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
Typical performance characteristics LFxxAB - LFxxC
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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
LFxxAB - LFxxC Typical performance characteristics
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Figure 10. Logic controlled precision 3.3/5.0 V selectable output
Figure 11. Sequential multi-output supply
Typical performance characteristics LFxxAB - LFxxC
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Figure 12. Multiple supply with ON/OFF toggle switch
Figure 13. Basic inhibit functions
LFxxAB - LFxxC Typical performance characteristics
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Figure 14. Delayed turn-on
Figure 15. Low voltage bulb blinker
Package mechanical data LFxxAB - LFxxC
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6 Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
LFxxAB - LFxxC Package mechanical data
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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
42/49
Dim. mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 4.40 4.60 0.1730.181
C1.231.32 0.0480.051
D 2.40 2.72 0.094 0.107
D1 1.27 0.050
E0.490.70 0.0190.027
F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.067
F2 1.14 1.70 0.044 0.067
G4.95 5.15 0.194 0.203
G1 2.4 2.7 0.094 0.106
H2 10.0 10.40 0.393 0.409
L2 16.4 0.645
L4 13.0 14.0 0.511 0.551
L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.2 6.6 0.244 0.260
L93.5 3.93 0.137 0.154
DIA. 3.75 3.85 0.147 0.151
TO-220 mechanical data
P011C
LFxxAB - LFxxC Package mechanical data
43/49
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
Package mechanical data LFxxAB - LFxxC
44/49
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 0° 8°0° 8°
DPAK mechanical data
0068772-F
LFxxAB - LFxxC Package mechanical data
45/49
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
Package mechanical data LFxxAB - LFxxC
46/49
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
LFxxAB - LFxxC Order codes
47/49
7 Order codes
Table 32. Order codes
Packages Output
voltage
TO-220 TO-220FP DPAK DPAK (T&R) PPAK PPAK (T&R)
LF15CV(1)
1. Available on request.
LF15CP(1) LF15CPT(1) LF15CPT-TR(1) 1.5 V
LF15ABV(1) 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
LF33CDT-TRY(2) LF33CPT-TRY(2) 3.3 V
LF33ABV LF33ABDT-TR 3.3 V
LF47CV 4.7 V
LF50CV LF50CP 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 LF80CPT-TR 8 V
LF80CDT-TRY(2) 8 V
LF80ABV LF80ABP(1) LF80ABDT-TR LF80ABPT-TR 8 V
LF85CP LF85CDT-TR LF85CPT-TR 8.5 V
LF85CDT-TRY(2) LF85CPT-TRY(2) 8.5 V
LF85ABP LF85ABPT(1) LF85ABPT-TR 8.5 V
LF90CV LF90CP(1) LF90CDT-TR LF90CPT-TR 9 V
LF90ABV LF90ABP(1) LF90ABDT(1) LF90ABDT-TR LF90ABPT-TR 9 V
LF120CP(1) LF120CDT-TR 12 V
LF120ABV LF120ABDT-TR LF120ABPT(1) 12 V
Revision history LFxxAB - LFxxC
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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 Ta bl e 1 in cover page.
26-Nov-2007 19 Modified: Tabl e 3 2 .
16-Jan-2008 20 Added new order codes for Automotive grade products see Table 32 on
page 47.
12-Feb-2008 21 Modified: Table 32 on page 47.
LFxxAB - LFxxC
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