June 2007 Rev. 13 1/30
30
L78L00 series
Positive voltage regulators
Features
■Output current up to 100 mA
■Output voltages of 3.3; 5; 6; 8; 9; 12; 15; 18;
24V
■Thermal overload protection
■Short circuit protection
■No external components are required
■Available in either ±5% (AC) or ±10% (C)
selection
Description
The L78L00 series of three-terminal positive
regulators employ internal current limiting and
thermal shutdown, making them essentially
indestructible. If adequate heat-sink is provided,
they can deliver up to 100 mA output current.
They are intended as fixed voltage regulators in a
wide range of applications including local or on-
card regulation for elimination of noise and
distribution problems associated with single-point
regulation.
In addition, they can be used with power pass
elements to make high-current voltage regulators.
The L78L00 series used as Zener diode/resistor
combination replacement, offers an effective
output impedance improvement of typically two
orders of magnitude, along with lower quiescent
current and lower noise.
SOT-89
TO-92
SO-8
www.st.com
Schematic diagram
L78L00 series
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Contents
1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
L78L00 series Pin configuration
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1 Pin configuration
Figure 1. Pin Connection (top view, bottom view for TO-92)
SOT-89
SO-8 TO-92
PIN 1 = VOUT
PIN 2 = GND
PIN 3 = VIN
Figure 2. Test circuits
Maximum ratings L78L00 series
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2 Maximum ratings
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
VIDC Input voltage
VO= 3.3 to 9V 30
VVO= 12 to 15V 35
VO= 18 to 24V 40
IOOutput current 100 mA
PDPower dissipation Internally Limited (1)
1. Our SO-8 package used for Voltage Regulators is modified internally to have pins 2, 3, 6 and 7 electrically communed to
the die attach flag. This particular frame decreases the total thermal resistance of the package and increases its ability to
dissipate power when an appropriate area of copper on the printed circuit board is available for heat-sinking. The external
dimensions are the same as for the standard SO-8.
mW
TSTG Storage temperature range -65 to 150 °C
TOP Operating junction temperature range for L7800AC 0 to 150 °C
for L7800AB -40 to 125
Table 2. Thermal Data
Symbol Parameter SO-8 TO-92 SOT-89 Unit
RthJC Thermal resistance junction-case. (Max) 20 15 °C/W
RthJA Thermal resistance junction-ambient. (Max) 55 (1) 200 °C/W
1. Considering 6 cm2 of copper Board heat-sink.
L78L00 series Electrical characteristics
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3 Electrical characteristics
Table 3. Electrical characteristics of L78L33C (refer to the test circuits, TJ = 0 to 125°C, VI = 8.3V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 3.036 3.3 3.564 V
VOOutput voltage IO = 1 to 40 mA, VI = 5.3 to 20 V 2.97 3.63 V
IO = 1 to 70 mA, VI = 8.3 V 2.97 3.63
ΔVOLine regulation VI = 5.3 to 20 V, TJ = 25°C 150 mV
VI = 6.3 to 20 V, TJ = 25°C 100
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 60 mV
IO = 1 to 40 mA, TJ = 25°C 30
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 6.3 to 20 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 40 µV
SVR Supply voltage rejection VI = 6.3 to 16.3 V, f = 120Hz
IO = 40 mA, TJ = 25°C 41 49 dB
VdDropout voltage 1.7 V
Electrical characteristics L78L00 series
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Table 4. Electrical characteristics of L78L05C (refer to the test circuits, TJ = 0 to 125°C, VI = 10V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 4.6 5 5.4 V
VOOutput voltage IO = 1 to 40 mA, VI = 7 to 20 V 4.5 5.5 V
IO = 1 to 70 mA, VI = 10 V 4.5 5.5
ΔVOLine regulation VI = 8.5 to 20 V, TJ = 25°C 200 mV
VI = 9 to 20 V, TJ = 25°C 150
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 60 mV
IO = 1 to 40 mA, TJ = 25°C 30
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 8 to 20 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 40 µV
SVR Supply voltage rejection VI = 9 to 20 V, f = 120Hz
IO = 40 mA, TJ = 25°C 40 49 dB
VdDropout voltage 1.7 V
Table 5. Electrical characteristics of L78L06C (refer to the test circuits, TJ = 0 to 125°C, VI = 12V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 5.52 6 6.48 V
VOOutput voltage IO = 1 to 40 mA, VI = 8.5 to 20 V 5.4 6.6 V
IO = 1 to 70 mA, VI = 12 V 5.4 6.6
ΔVOLine regulation VI = 8.5 to 20 V, TJ = 25°C 200 mV
VI = 9 to 20 V, TJ = 25°C 150
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 60 mV
IO = 1 to 40 mA, TJ = 25°C 30
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 8 to 20 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 50 µV
SVR Supply voltage rejection VI = 9 to 20 V, f = 120Hz
IO = 40 mA, TJ = 25°C 38 46 dB
VdDropout voltage 1.7 V
L78L00 series Electrical characteristics
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Table 6. Electrical characteristics of L78L08C (refer to the test circuits, TJ = 0 to 125°C, VI = 14V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 7.36 8 8.64 V
VOOutput voltage IO = 1 to 40 mA, VI = 8.5 to 20 V 7.2 8.8 V
IO = 1 to 70 mA, VI = 12 V 7.2 8.8
ΔVOLine regulation VI = 8.5 to 20 V, TJ = 25°C 200 mV
VI = 9 to 20 V, TJ = 25°C 150
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 80 mV
IO = 1 to 40 mA, TJ = 25°C 40
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 8 to 20 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 60 µV
SVR Supply voltage rejection VI = 9 to 20 V, f = 120Hz
IO = 40 mA, TJ = 25°C 36 45 dB
VdDropout voltage 1.7 V
Table 7. Electrical characteristics of L78L09C (refer to the test circuits, TJ = 0 to 125°C, VI = 15V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 8.28 9 9.72 V
VOOutput voltage IO = 1 to 40 mA, VI = 11.5 to 23 V 8.1 9.9 V
IO = 1 to 70 mA, VI = 15 V 8.1 9.9
ΔVOLine regulation VI = 11.5 to 23 V, TJ = 25°C 250 mV
VI = 12 to 23 V, TJ = 25°C 200
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 80 mV
IO = 1 to 40 mA, TJ = 25°C 40
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 12 to 23 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 70 µV
SVR Supply voltage rejection VI = 12 to 23 V, f = 120Hz
IO = 40 mA, TJ = 25°C 36 44 dB
VdDropout voltage 1.7 V
Electrical characteristics L78L00 series
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Table 8. Electrical characteristics of L78L10C (refer to the test circuits, TJ = 0 to 125°C, VI = 16V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 9.2 10 10.8 V
VOOutput voltage IO = 1 to 40 mA, VI = 12.5 to 23 V 9 11 V
IO = 1 to 70 mA, VI = 16 V 9 11
ΔVOLine regulation VI = 12.5 to 23 V, TJ = 25°C 230 mV
VI = 13 to 23 V, TJ = 25°C 170
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 80 mV
IO = 1 to 40 mA, TJ = 25°C 40
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 13 to 23 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 60 µV
SVR Supply voltage rejection VI = 14 to 23 V, f = 120Hz
IO = 40 mA, TJ = 25°C 37 45 dB
VdDropout voltage 1.7 V
Table 9. Electrical characteristics of L78L12C (refer to the test circuits, TJ = 0 to 125°C, VI = 19V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 11.1 12 12.9 V
VOOutput voltage IO = 1 to 40 mA, VI = 14.5 to 27 V 10.8 13.2 V
IO = 1 to 70 mA, VI = 19 V 10.8 13.2
ΔVOLine regulation VI = 14.5 to 27 V, TJ = 25°C 250 mV
VI = 16 to 27 V, TJ = 25°C 200
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 100 mV
IO = 1 to 40 mA, TJ = 25°C 50
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 16 to 27 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 80 µV
SVR Supply voltage rejection VI = 15 to 25 V, f = 120Hz
IO = 40 mA, TJ = 25°C 36 42 dB
VdDropout voltage 1.7 V
L78L00 series Electrical characteristics
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Table 10. Electrical characteristics of L78L15C (refer to the test circuits, TJ = 0 to 125°C, VI = 23V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 13.8 15 16.2 V
VOOutput voltage IO = 1 to 40 mA, VI = 17.5 to 30 V 13.5 16.5 V
IO = 1 to 70 mA, VI = 23 V 13.5 16.5
ΔVOLine regulation VI = 17.5 to 30 V, TJ = 25°C 300 mV
VI = 20 to 30 V, TJ = 25°C 250
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 150 mV
IO = 1 to 40 mA, TJ = 25°C 75
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 20 to 30 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 90 µV
SVR Supply voltage rejection VI = 18.5 to 28.5 V, f = 120Hz
IO = 40 mA, TJ = 25°C 33 39 dB
VdDropout voltage 1.7 V
Table 11. Electrical characteristics of L78L18C (refer to the test circuits, TJ = 0 to 125°C, VI = 27V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 16.6 18 19.4 V
VOOutput voltage IO = 1 to 40 mA, VI = 22 to 33 V 16.2 19.8 V
IO = 1 to 70 mA, VI = 27 V 16.2 19.8
ΔVOLine regulation VI = 22 to 33 V, TJ = 25°C 320 mV
VI = 22 to 33 V, TJ = 25°C 270
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 170 mV
IO = 1 to 40 mA, TJ = 25°C 85
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 23 to 33 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 120 µV
SVR Supply voltage rejection VI = 23 to 33 V, f = 120Hz
IO = 40 mA, TJ = 25°C 32 38 dB
VdDropout voltage 1.7 V
Electrical characteristics L78L00 series
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Table 12. Electrical characteristics of L78L20C (refer to the test circuits, TJ = 0 to 125°C, VI = 29V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 18.4 20 21.6 V
VOOutput voltage IO = 1 to 40 mA, VI = 24 to 33 V 18 22 V
IO = 1 to 70 mA, VI = 29 V 18 22
ΔVOLine regulation VI = 22.5 to 34 V, TJ = 25°C 330 mV
VI = 24 to 34 V, TJ = 25°C 280
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 180 mV
IO = 1 to 40 mA, TJ = 25°C 90
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 25 to 33 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 120 µV
SVR Supply voltage rejection VI = 25 to 35 V, f = 120Hz
IO = 40 mA, TJ = 25°C 31 38 dB
VdDropout voltage 1.7 V
Table 13. Electrical characteristics of L78L24C (refer to the test circuits, TJ = 0 to 125°C, VI = 33V,
IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 22.1 24 25.9 V
VOOutput voltage IO = 1 to 40 mA, VI = 27 to 38 V 21.6 26.4 V
IO = 1 to 70 mA, VI = 33 V 21.6 26.4
ΔVOLine regulation VI = 27 to 38 V, TJ = 25°C 350 mV
VI = 28 to 38 V, TJ = 25°C 300
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 200 mV
IO = 1 to 40 mA, TJ = 25°C 100
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.2 mA
VI = 28 to 38 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 200 µV
SVR Supply voltage rejection VI = 29 to 35 V, f = 120Hz
IO = 40 mA, TJ = 25°C 30 37 dB
VdDropout voltage 1.7 V
L78L00 series Electrical characteristics
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Table 14. Electrical characteristics of L78L33AB and L78L33AC (refer to the test circuits,
VI = 8.3V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L33AC,
TJ = -40 to 125°C for L78L33AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 3.168 3.3 3.432 V
VOOutput voltage IO = 1 to 40 mA, VI = 5.3 to 20 V 3.135 3.465 V
IO = 1 to 70 mA, VI = 8.3 V 3.135 3.465
ΔVOLine regulation VI = 5.3 to 20 V, TJ = 25°C 150 mV
VI = 6.3 to 20 V, TJ = 25°C 100
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 60 mV
IO = 1 to 40 mA, TJ = 25°C 30
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 6.3 to 20 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 40 µV
SVR Supply voltage rejection VI = 6.3 to 16.3 V, f = 120Hz
IO = 40 mA, TJ = 25°C 41 49 dB
VdDropout voltage 1.7 V
Table 15. Electrical characteristics of L78L05AB and L78L05AC (refer to the test circuits,
VI = 10V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L05AC,
TJ = -40 to 125°C for L78L05AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 4.8 5 5.2 V
VOOutput voltage IO = 1 to 40 mA, VI = 7 to 20 V 4.75 5.25 V
IO = 1 to 70 mA, VI = 10 V 4.75 5.25
ΔVOLine regulation VI = 7 to 20 V, TJ = 25°C 150 mV
VI = 8 to 20 V, TJ = 25°C 100
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 60 mV
IO = 1 to 40 mA, TJ = 25°C 30
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 8 to 20 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 40 µV
SVR Supply voltage rejection VI = 8 to 18 V, f = 120Hz
IO = 40 mA, TJ = 25°C 41 49 dB
VdDropout voltage 1.7 V
Electrical characteristics L78L00 series
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Table 16. Electrical characteristics of L78L06AB and L78L06AC (refer to the test circuits,
VI = 12V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L06AC,
TJ = -40 to 125°C for L78L06AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 5.76 6 6.24 V
VOOutput voltage IO = 1 to 40 mA, VI = 8.5 to 20 V 5.7 6.3 V
IO = 1 to 70 mA, VI = 12 V 5.7 6.3
ΔVOLine regulation VI = 8.5 to 20 V, TJ = 25°C 150 mV
VI = 9 to 20 V, TJ = 25°C 100
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 60 mV
IO = 1 to 40 mA, TJ = 25°C 30
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 9 to 20 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 50 µV
SVR Supply voltage rejection VI = 9 to 20 V, f = 120Hz
IO = 40 mA, TJ = 25°C 39 46 dB
VdDropout voltage 1.7 V
Table 17. Electrical characteristics of L78L08AB and L78L08AC (refer to the test circuits,
VI = 14V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L08AC,
TJ = -40 to 125°C for L78L08AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 7.68 8 8.32 V
VOOutput voltage IO = 1 to 40 mA, VI = 10.5 to 23 V 7.6 8.4 V
IO = 1 to 70 mA, VI = 14 V 7.6 8.4
ΔVOLine regulation VI = 10.5 to 23 V, TJ = 25°C 175 mV
VI = 11 to 23 V, TJ = 25°C 125
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 80 mV
IO = 1 to 40 mA, TJ = 25°C 40
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 11 to 23 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 60 µV
SVR Supply voltage rejection VI = 12 to 23 V, f = 120Hz
IO = 40 mA, TJ = 25°C 37 45 dB
VdDropout voltage 1.7 V
L78L00 series Electrical characteristics
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Table 18. Electrical characteristics of L78L09AB and L78L09AC (refer to the test circuits,
VI = 15V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L09AC,
TJ = -40 to 125°C for L78L09AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 8.64 9 9.36 V
VOOutput voltage IO = 1 to 40 mA, VI = 11.5 to 23 V 8.55 9.45 V
IO = 1 to 70 mA, VI = 15 V 8.55 9.45
ΔVOLine regulation VI = 11.5 to 23 V, TJ = 25°C 225 mV
VI = 12 to 23 V, TJ = 25°C 150
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 80 mV
IO = 1 to 40 mA, TJ = 25°C 40
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 12 to 23 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 70 µV
SVR Supply voltage rejection VI = 12 to 23 V, f = 120Hz
IO = 40 mA, TJ = 25°C 37 44 dB
VdDropout voltage 1.7 V
Table 19. Electrical characteristics of L78L10AB and L78L10AC (refer to the test circuits,
VI = 16V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L10AC,
TJ = -40 to 125°C for L78L10AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 9.6 10 10.4 V
VOOutput voltage IO = 1 to 40 mA, VI = 12.5 to 23 V 9.5 10.5 V
IO = 1 to 70 mA, VI = 16 V 9.5 10.5
ΔVOLine regulation VI = 12.5 to 23 V, TJ = 25°C 230 mV
VI = 13 to 23 V, TJ = 25°C 170
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 80 mV
IO = 1 to 40 mA, TJ = 25°C 40
IdQuiescent current TJ = 25°C 6 mA
TJ = 125°C 5.5 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 13 to 23 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 60 µV
SVR Supply voltage rejection VI = 14 to 23 V, f = 120Hz
IO = 40 mA, TJ = 25°C 37 45 dB
VdDropout voltage 1.7 V
Electrical characteristics L78L00 series
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Table 20. Electrical characteristics of L78L12AB and L78L12AC (refer to the test circuits,
VI = 19V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L12AC,
TJ = -40 to 125°C for L78L12AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 11.5 12 12.5 V
VOOutput voltage IO = 1 to 40 mA, VI = 14.5 to 27 V 11.4 12.6 V
IO = 1 to 70 mA, VI = 19 V 11.4 12.6
ΔVOLine regulation VI = 14.5 to 27 V, TJ = 25°C 250 mV
VI = 16 to 27 V, TJ = 25°C 200
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 100 mV
IO = 1 to 40 mA, TJ = 25°C 50
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 16 to 27 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 80 µV
SVR Supply voltage rejection VI = 15 to 25 V, f = 120Hz
IO = 40 mA, TJ = 25°C 37 42 dB
VdDropout voltage 1.7 V
Table 21. Electrical characteristics of L78L15AB and L78L15AC (refer to the test circuits,
VI = 23V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L15AC,
TJ = -40 to 125°C for L78L15AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 14.4 15 15.6 V
VOOutput voltage IO = 1 to 40 mA, VI = 17.5 to 30 V 14.25 15.75 V
IO = 1 to 70 mA, VI = 23 V 14.25 15.75
ΔVOLine regulation VI = 17.5 to 30 V, TJ = 25°C 300 mV
VI = 20 to 30 V, TJ = 25°C 250
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 150 mV
IO = 1 to 40 mA, TJ = 25°C 75
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 20 to 30 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 90 µV
SVR Supply voltage rejection VI = 18.5 to 28.5 V, f = 120Hz
IO = 40 mA, TJ = 25°C 34 39 dB
VdDropout voltage 1.7 V
L78L00 series Electrical characteristics
15/30
Table 22. Electrical characteristics of L78L18AB and L78L18AC (refer to the test circuits,
VI = 27V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L18AC,
TJ = -40 to 125°C for L78L18AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 17.3 18 18.7 V
VOOutput voltage IO = 1 to 40 mA, VI = 22 to 33 V 17.1 18.9 V
IO = 1 to 70 mA, VI = 27 V 17.1 18.9
ΔVOLine regulation VI = 22 to 33 V, TJ = 25°C 320 mV
VI = 22 to 33 V, TJ = 25°C 270
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 170 mV
IO = 1 to 40 mA, TJ = 25°C 85
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 23 to 33 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 120 µV
SVR Supply voltage rejection VI = 23 to 33 V, f = 120Hz
IO = 40 mA, TJ = 25°C 33 38 dB
VdDropout voltage 1.7 V
Table 23. Electrical characteristics of L78L20AB and L78L20AC (refer to the test circuits,
VI = 29V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L20AC,
TJ = -40 to 125°C for L78L20AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 19.2 20 20.8 V
VOOutput voltage IO = 1 to 40 mA, VI = 24 to 33 V 19 21 V
IO = 1 to 70 mA, VI = 29 V 19 21
ΔVOLine regulation VI = 22.5 to 34 V, TJ = 25°C 330 mV
VI = 24 to 34 V, TJ = 25°C 280
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 180 mV
IO = 1 to 40 mA, TJ = 25°C 90
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 25 to 33 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 120 µV
SVR Supply voltage rejection VI = 25 to 35 V, f = 120Hz
IO = 40 mA, TJ = 25°C 32 38 dB
VdDropout voltage 1.7 V
Electrical characteristics L78L00 series
16/30
Table 24. Electrical characteristics of L78L24AB and L78L24AC (refer to the test circuits,
VI = 33V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L24AC,
TJ = -40 to 125°C for L78L24AB, unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VOOutput voltage TJ = 25°C 23 24 25 V
VOOutput voltage IO = 1 to 40 mA, VI = 27 to 38 V 22.8 25.2 V
IO = 1 to 70 mA, VI = 33 V 22.8 25.2
ΔVOLine regulation VI = 27 to 38 V, TJ = 25°C 350 mV
VI = 28 to 38 V, TJ = 25°C 300
ΔVOLoad regulation IO = 1 to 100 mA, TJ = 25°C 200 mV
IO = 1 to 40 mA, TJ = 25°C 100
IdQuiescent current TJ = 25°C 6.5 mA
TJ = 125°C 6 mA
ΔIdQuiescent current change IO = 1 to 40 mA 0.1 mA
VI = 28 to 38 V 1.5
eN Output noise voltage B =10Hz to 100KHz, TJ = 25°C 200 µV
SVR Supply voltage rejection VI = 29 to 33 V, f = 120Hz
IO = 40 mA, TJ = 25°C 31 37 dB
VdDropout voltage 1.7 V
L78L00 series Typical performance
17/30
4 Typical performance
Figure 3. L78L05/12 output voltage vs
ambient temperature
Figure 4. L78L05/12/24 load characteristics
Figure 5. L78L05/12/24 thermal shutdown Figure 6. L78L05/12 quiescent current vs
output current
Figure 7. L78L05 quiescent current vs input
voltage
Figure 8. L78L05/12/24 output characteristics
Typical performance L78L00 series
18/30
Figure 9. L78L05/12/24 ripple rejection Figure 10. L78L05 dropout characteristics
Figure 11. L78L00 series short circuit output
current
L78L00 series Typical application
19/30
5 Typical application
Figure 12. High output current short circuit protected
Figure 13. Edit boost circuit
Figure 14. Current regulator
Typical application L78L00 series
20/30
Figure 15. Adjustable output regulator
L78L00 series Package mechanical data
21/30
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.
Package mechanical data L78L00 series
22/30
DIM. mm. inch
MIN. TYP MAX. MIN. TYP. MAX.
A 1.35 1.75 0.053 0.069
A1 0.10 0.25 0.04 0.010
A2 1.10 1.65 0.043 0.065
B 0.33 0.51 0.013 0.020
C 0.19 0.25 0.007 0.010
D 4.80 5.00 0.189 0.197
E 3.80 4.00 0.150 0.157
e 1.27 0.050
H 5.80 6.20 0.228 0.244
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
k ˚ (max.)
ddd 0.1 0.04
SO-8 MECHANICAL DATA
0016023/C
8
L78L00 series Package mechanical data
23/30
DIM.
mm. mils
MIN. TYP MAX. MIN. TYP. MAX.
A 1.4 1.6 55.1 63.0
B 0.44 0.56 17.3 22.0
B1 0.36 0.48 14.2 18.9
C 0.35 0.44 13.8 17.3
C1 0.35 0.44 13.8 17.3
D 4.4 4.6 173.2 181.1
D1 1.62 1.83 63.8 72.0
E 2.29 2.6 90.2 102.4
e 1.42 1.57 55.9 61.8
e1 2.92 3.07 115.0 120.9
H 3.94 4.25 155.1 167.3
L 0.89 1.2 35.0 47.2
SOT-89 MECHANICAL DATA
P025H
Package mechanical data L78L00 series
24/30
DIM.
mm. mils
MIN. TYP MAX. MIN. TYP. MAX.
A 4.32 4.95 170.1 194.9
b 0.36 0.51 14.2 20.1
D 4.45 4.95 175.2 194.9
E 3.30 3.94 129.9 155.1
e 2.41 2.67 94.9 105.1
e1 1.14 1.40 44.9 55.1
L 12.7 15.49 500.0 609.8
R 2.16 2.41 85.0 94.9
S1 0.92 1.52 36.2 59.8
W 0.41 0.56 16.1 22.0
α5° 5°
TO-92 MECHANICAL DATA
0102782/D
L78L00 series Package mechanical data
25/30
DIM.
mm. inch
MIN. TYP MAX. MIN. TYP. MAX.
A 330 12.992
C 12.8 13.2 0.504 0.519
D 20.2 0.795
N 60 2.362
T 22.4 0.882
Ao 8.1 8.5 0.319 0.335
Bo 5.5 5.9 0.216 0.232
Ko 2.1 2.3 0.082 0.090
Po 3.9 4.1 0.153 0.161
P 7.9 8.1 0.311 0.319
Tape & Reel SO-8 MECHANICAL DATA
Package mechanical data L78L00 series
26/30
DIM.
mm. inch
MIN. TYP MAX. MIN. TYP. MAX.
A 180 7.086
C 12.8 13.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N 60 2.362
T 14.4 0.567
Ao 4.70 4.80 4.90 0.185 0.189 0.193
Bo 4.30 4.40 4.50 0.169 0.173 0.177
Ko 1.70 1.80 1.90 0.067 0.071 0.075
Po 3.9 4.0 4.1 0.153 0.157 0.161
P 7.9 8.0 8.1 0.311 0.315 0.319
Tape & Reel SOT89 MECHANICAL DATA
L78L00 series Package mechanical data
27/30
DIM. mm. inch
MIN. TYP MAX. MIN. TYP. MAX.
A1 4.80 0.189
T 3.80 0.150
T1 1.60 0.063
T2 2.30 0.091
d 0.48 0.019
P0 12.5 12.9 0.492 0.508
P2 5.65 7.05 0.222 0.278
F1, F2 2.44 2.54 2.94 0.096 0.100 0.116
delta H ±2 0.079
W 17.5 18.00 19.0 0.689 0.709 0.748
W0 5.7 6.3 0.224 0.248
W1 8.5 9.25 0.335 0.364
W2 0.50 0.20
H 18.50 18.70 0.728 0.726
H0 15.50 16.50 0.610 0.650
H1 25.00 0.984
D0 3.8 4.2 0.150 0.165
t 0.90 0.035
L1 3 0.118
delta P ±1 0.039
u 50 1.968
Φ1 360 14.173
Φ2 30 1.181
Tape & Reel for TO-92 MECHANICAL DATA
Φ1
Φ2
u
Pull-out direction
W
W1
W0
W2
A1
d
D0
H1
H
H0
L
l1
F1 F2
P2
P0
delta P
delta H
T2 T1
T
t
DRAWING NOT IN SCALE
Order codes L78L00 series
28/30
7 Order codes
Table 25. Order codes
Part numbers
Packaging
Output voltage
SO-8 TO92 (BAG) (1)
1. Available in Ammopak with the suffix "-AP" or in Tape & Reel with the suffix "TR". Please note that in these cases pins are
shaped according to Tape & Reel specifications.
SOT-89
L78L33C L78L33CD13TR L78L33CZ 3.3 V
L78L33AC L78L33ACD13TR L78L33ACZ L78L33ACUTR 3.3 V
L78L33AB L78L33ABD13TR L78L33ABZ L78L33ABUTR 3.3 V
L78L05C L78L05CD13TR L78L05CZ 5 V
L78L05AC L78L05ACD13TR L78L05ACZ L78L05ACUTR 5 V
L78L05AB L78L05ABD13TR L78L05ABZ L78L05ABUTR 5 V
L78L06C L78L06CZ 6 V
L78L06AC L78L06ACD13TR L78L06ACZ L78L06ACUTR 6 V
L78L06AB L78L06ABD13TR L78L06ABZ L78L06ABUTR 6 V
L78L08C L78L08CD13TR L78L08CZ 8 V
L78L08AC L78L08ACD13TR L78L08ACZ L78L08ACUTR 8 V
L78L08AB L78L08ABD13TR L78L08ABZ L78L08ABUTR 8 V
L78L09C L78L09CD13TR L78L09CZ 9 V
L78L09AC L78L09ACD13TR L78L09ACZ L78L09ACUTR 9 V
L78L09AB L78L09ABD13TR L78L09ABZ L78L09ABUTR 9 V
L78L12C L78L12CD13TR L78L12CZ (2) 12 V
L78L12AC L78L12ACD13TR L78L12ACZ (2) L78L12ACUTR 12 V
L78L12AB L78L12ABD13TR (2)
2. Available on request.
L78L12ABZ (2) L78L12ABUTR 12 V
L78L15C L78L15CD13TR L78L15CZ 15 V
L78L15AC L78L15ACD13TR L78L15ACZ L78L15ACUTR 15 V
L78L15AB L78L15ABD13TR L78L15ABZ L78L15ABUTR 15 V
L78L18C L78L18CD13TR L78L18CZ 18 V
L78L18AC L78L18ACD13TR L78L18ACZ L78L18ACUTR 18 V
L78L18AB L78L18ABD13TR L78L18ABZ L78L18ABUTR 18 V
L78L24C L78L24CD13TR L78L24CZ 24 V
L78L24AC L78L24ACD13TR L78L24ACZ L78L24ACUTR 24 V
L78L24AB L78L24ABD13TR L78L24ABZ L78L24ABUTR 24 V
L78L00 series Revision history
29/30
8 Revision history
Table 26. Revision history
Date Revision Changes
14-Mar-2005 9 Add Tape & Reel for TO-92.
15-Mar-2005 10 Add note on Table 3.
23-Dec-2005 11 Mistake on Ordering Table in Header.
12-Sep-2006 12 Order Codes has been updated and new template.
07-Jun-2007 13 Order Codes has been updated.
L78L00 series
30/30
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