ST MICROELECTRONICS LF 33 CDT Datasheet

Very low drop voltage regulators with inhibit
Features
Very low dropout voltage (0.45 V)
Very low quiescent current (typ. 50 µA in OFF
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 V 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,
in DPAK and PPAK
OUT
LFxxAB
LFxxC
TO-220
DPAKPPAK
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

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
November 2010 Doc ID 2574 Rev 24 1/50
www.st.com
50
Contents LFxxAB, LFxxC
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
2/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC List of tables
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
Doc ID 2574 Rev 24 3/50
List of figures LFxxAB, LFxxC
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
4/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Diagram

1 Diagram

Figure 1. Block diagram

Doc ID 2574 Rev 24 5/50
Pin configuration LFxxAB, LFxxC

2 Pin configuration

Figure 2. Pin connections (top view)

TO-220
PPAK
TO-220FP
DPAK
PENTAWATT
6/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Maximum ratings

3 Maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit
V
I
I
O
P
TOT
T
STG
T
OP
1. For 18 < VI < 40 the regulator is in shut-down
DC input voltage -0.5 to 40
Output current Internally limited
Power dissipation Internally limited
Storage temperature range -40 to 150 °C
Operating junction temperature range -40 to 125 °C

Table 3. Thermal data

Symbol Parameter PENTAWATT TO-220 TO-220FP DPAK/PPAK Unit
(1)
V
R
R

Figure 3. Test circuit

Thermal resistance junction-case 3 5 5 8 °C/W
thJC
Thermal resistance junction-ambient 50 50 60 100 °C/W
thJA
Doc ID 2574 Rev 24 7/50
Electrical characteristics LFxxAB, LFxxC

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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 3.5 ± 1 V
I
= 50 mA, VI = 3.5 V 1.485 1.5 1.515
Output voltage
O
= 50 mA, VI = 3.5 V, Ta = -25 to 85°C 1.470 1.530
I
O
V
Operating input voltage IO = 500 mA 2.5 16 V
Output current limit 1 A
Line regulation VI = 2.5 to 16 V, IO = 5 mA 2 10 mV
Load regulation VI = 2.8 V, IO = 5 to 500 mA 2 10 mV
Quiescent current
= 2.5 to 16V, IO = 0mA
V
I
= 2.8 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
Dropout voltage IO = 200 mA 1 V
V
d
Control input logic low Ta = -40 to 125°C 0.8 V
V
IL
V
Control input logic high Ta = -40 to 125°C 2 V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
8/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 3.5 ± 1 V
I
= 50 mA, VI = 3.3 V 1.782 1.8 1.818
Output voltage
O
= 50 mA, VI = 3.3 V, Ta = -25 to 85°C 1.764 1.836
I
O
V
Operating input voltage IO = 500 mA 3 16 V
Output current limit 1 A
Line regulation VI = 2.8 to 16 V, IO = 5 mA 2 12 mV
Load regulation VI = 3.3 V, IO = 5 to 500 mA 2 10 mV
Quiescent current
= 2.5 to 16V, IO = 0mA
V
I
= 3.1 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
Dropout voltage IO = 200 mA 0.7 V
V
d
Control input logic low Ta = -40 to 125°C 0.8 V
V
IL
V
Control input logic high Ta = -40 to 125°C 2 V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
Doc ID 2574 Rev 24 9/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 3.5 ± 1 V
I
= 50 mA, VI = 3.5 V 1.764 1.8 1.836
Output voltage
O
= 50 mA, VI = 3.5 V, Ta = -25 to 85°C 1.728 1.872
I
O
V
Operating input voltage IO = 500 mA 3 16 V
Output current limit 1 A
Line regulation VI = 2.8 to 16 V, IO = 5 mA 2 12 mV
Load regulation VI = 3.3 V, IO = 5 to 500 mA 2 10 mV
Quiescent current
= 2.5 to 16V, IO = 0mA
V
I
= 3.1 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
Dropout voltage IO = 200 mA 0.7 V
V
d
Control input logic low Ta = -40 to 125°C 0.8 V
V
IL
V
Control input logic high Ta = -40 to 125°C 2 V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
10/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 3.5 V, Ta = 25°C 1.764 1.8 1.836
Output voltage
O
= 50 mA, VI = 3.5 V 1.713 1.887
I
O
V
Operating input voltage IO = 500 mA 3 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 2.8 to 16 V, IO = 5 mA 2 15 mV
Load regulation VI = 3.3 V, IO = 5 to 500 mA 2 15 mV
Quiescent current
= 2.5 to 16V, IO = 0mA
V
I
= 3.1 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 120 µA
V
I
ON MODE
0.5 2 mA
f = 120 Hz 82
= 5 mA, VI = 3.5 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 77
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 11/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 4.5 ± 1 V
I
= 50 mA, VI = 4.5 V 2.475 2.5 2.525
Output voltage
O
= 50 mA, VI = 4.5 V, Ta = -25 to 85°C 2.450 2.550
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 3.5 to 16 V, IO = 5 mA 2 12 mV
Load regulation VI = 3.8 V, IO = 5 to 500 mA 2 12 mV
Quiescent current
= 3.5 to 16V, IO = 0mA
V
I
= 3.8 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
12/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 4.5 V, Ta = 25°C 2.475 2.5 2.525
Output voltage
O
= 50 mA, VI = 4.5 V 2.435 2.565
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 3.5 to 16 V, IO = 5 mA 2 15 mV
Load regulation VI = 3.8 V, IO = 5 to 500 mA 2 15 mV
Quiescent current
= 3.5 to 16V, IO = 0mA
V
I
= 3.8 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 120 µA
V
I
ON MODE
0.5 2 mA
f = 120 Hz 82
= 5 mA, VI = 4.5 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 13/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 4.5 ± 1 V
I
= 50 mA, VI = 4.5 V 2.45 2.5 2.55
Output voltage
O
= 50 mA, VI = 4.5 V, Ta = -25 to 85°C 2.4 2.6
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 3.5 to 16 V, IO = 5 mA 2 12 mV
Load regulation VI = 3.8 V, IO = 5 to 500 mA 2 12 mV
Quiescent current
= 3.5 to 16V, IO = 0mA
V
I
= 3.8 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
14/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 4.5 V, Ta = 25°C 2.45 2.5 2.55
Output voltage
O
= 50 mA, VI = 4.5 V 2.385 2.615
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 3.5 to 16 V, IO = 5 mA 2 15 mV
Load regulation VI = 3.8 V, IO = 5 to 500 mA 2 15 mV
Quiescent current
= 3.5 to 16V, IO = 0mA
V
I
= 3.8 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 120 µA
V
I
ON MODE
0.5 2 mA
f = 120 Hz 82
= 5 mA, VI = 4.5 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 77
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 15/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 5.3 ± 1 V
I
= 50 mA, VI = 5.3 V 3.267 3.3 3.333
Output voltage
O
= 50 mA, VI = 5.3 V, Ta = -25 to 85°C 3.234 3.366
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 4.3 to 16 V, IO = 5 mA 3 16 mV
Load regulation VI = 4.6 V, IO = 5 to 500 mA 3 16 mV
Quiescent current
= 4.3 to 16V, IO = 0mA
V
I
= 4.6 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 80
dBf = 1 kHz 75
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
16/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 5.3 ± 1 V
I
= 50 mA, VI = 5.3 V 3.234 3.3 3.366
Output voltage
O
= 50 mA, VI = 5.3 V, Ta = -25 to 85°C 3.168 3.432
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 4.3 to 16 V, IO = 5 mA 3 16 mV
Load regulation VI = 4.6 V, IO = 5 to 500 mA 3 16 mV
Quiescent current
= 4.3 to 16V, IO = 0mA
V
I
= 4.6 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 80
dBf = 1 kHz 75
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 17/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 5.3 V, Ta = 25°C 3.234 3.3 3.366
Output voltage
O
= 50 mA, VI = 5.3 V, 3.153 3.447
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 4.3 to 16 V, IO = 5 mA 3 19 mV
Load regulation VI = 4.6 V, IO = 5 to 500 mA 3 19 mV
Quiescent current
= 4.3 to 16V, IO = 0mA
V
I
= 4.6 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 120 µA
V
I
ON MODE
0.5 2 mA
f = 120 Hz 80
= 5 mA, VI = 5.3 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 75
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 KHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
18/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 7 ± 1 V
I
= 50 mA, VI = 7 V 4.9555.05
Output voltage
O
= 50 mA, VI = 7 V, Ta = -25 to 85°C 4.9 5.1
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 6 to 16 V, IO = 5 mA 5 25 mV
Load regulation VI = 6.3 V, IO = 5 to 500 mA 5 25 mV
Quiescent current
= 6 to 16V, IO = 0mA
V
I
= 6.3 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 19/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 7 V, Ta = 25°C 4.95 5 5.05
Output voltage
O
= 50 mA, VI = 7 V 4.885 5.115
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 6 to 16 V, IO = 5 mA 5 28 mV
Load regulation VI = 6.3 V, IO = 5 to 500 mA 5 28 mV
Quiescent current
= 6 to 16V, IO = 0mA
V
I
= 6.3 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 120 µA
V
I
ON MODE
0.5 2 mA
f = 120 Hz 76
= 5 mA, VI = 7 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
20/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 7 ± 1 V
I
= 50 mA, VI = 7 V 4.9 5 5.1
Output voltage
O
= 50 mA, VI = 7 V, Ta = -25 to 85°C 4.8 5.2
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 6 to 16 V, IO = 5 mA 5 25 mV
Load regulation VI = 6.3 V, IO = 5 to 500 mA 5 25 mV
Quiescent current
= 6 to 16V, IO = 0mA
V
I
= 6.3 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 100 µA
V
I
ON MODE
0.5 1 mA
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 6 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 21/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 7 V, Ta = 25°C 4.9 5 5.1
Output voltage
O
= 50 mA, VI = 7 V 4.785 5.215
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 6 to 16 V, IO = 5 mA 5 28 mV
Load regulation VI = 6.3 V, IO = 5 to 500 mA 5 28 mV
Quiescent current
= 6 to 16V, IO = 0mA
V
I
= 6.3 to 16V, IO=500mA 12
V
I
= 6 V OFF MODE 50 120 µA
V
I
ON MODE
0.5 2 mA
f = 120 Hz 76
= 5 mA, VI = 7 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 71
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
22/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 8 ± 1 V
I
= 50 mA, VI = 8 V 5.9466.06
Output voltage
O
= 50 mA, VI = 8 V, Ta = -25 to 85°C 5.88 6.12
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 7 to 16 V, IO = 5 mA 6 30 mV
Load regulation VI = 7.3 V, IO = 5 to 500 mA 6 30 mV
Quiescent current
= 7 to 16V, IO = 0mA
V
I
= 7.3 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5 mA
f = 120 Hz 75
dBf = 1 kHz 70
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 9 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 23/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 8 ± 1 V
I
= 50 mA, VI = 8 V 5.8866.12
Output voltage
O
= 50 mA, VI = 8 V, Ta = -25 to 85°C 5.76 6.24
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 7 to 16 V, IO = 5 mA 6 30 mV
Load regulation VI = 7.3 V, IO = 5 to 500 mA 6 30 mV
Quiescent current
= 7 to 16V, IO = 0mA
V
I
= 7.3 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5 mA
f = 120 Hz 75
dBf = 1 kHz 70
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 9 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
24/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
I
= 50 mA, VI = 10 V 7.92 8 8.08
V
Output voltage
O
Operating input voltage IO = 500 mA 16 V
V
I
Output current limit 1 A
I
O
ΔV
ΔV
Line regulation VI = 9 to 16 V, IO = 5 mA 8 40 mV
O
Load regulation VI = 9.3 V, IO = 5 to 500 mA 8 40 mV
O
I
Quiescent current
d
SVR Supply voltage rejection IO = 5 mA, VI = 10 ± 1 V
O
= 50 mA, VI = 10 V, Ta = -25 to 85°C 7.84 8.16
I
O
= 9 to 16V, IO = 0mA
V
I
= 9.3 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5
f = 120 Hz 72
f = 10 kHz 57
V
mA
dBf = 1 kHz 67
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 9 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 25/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 10 ± 1 V
I
= 50 mA, VI = 10 V 7.84 8 8.16
Output voltage
O
= 50 mA, VI = 10 V, Ta = -25 to 85°C 7.68 8.32
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 9 to 16 V, IO = 5 mA 8 40 mV
Load regulation VI = 9.3 V, IO = 5 to 500 mA 8 40 mV
Quiescent current
= 9 to 16V, IO = 0mA
V
I
= 9.3 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5 mA
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 9 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
26/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 10 V, Ta = 25°C 7.84 8 8.16
Output voltage
O
= 50 mA, VI = 10 V 7.665 8.335
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 9 to 16 V, IO = 5 mA 8 44 mV
Load regulation VI = 9.3 V, IO = 5 to 500 mA 8 44 mV
Quiescent current
= 9 to 16V, IO = 0mA
V
I
= 9.3 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 160 µA
V
I
ON MODE
0.7 2.5 mA
f = 120 Hz 72
= 5 mA, VI = 10 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 9 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 27/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 10.5 ± 1 V
I
= 50 mA, VI = 10.5 V 8.415 8.5 8.585
Output voltage
O
= 50 mA, VI = 10.5 V, Ta = -25 to 85°C 8.33 8.67
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 9.5 to 16 V, IO = 5 mA 8 42 mV
Load regulation VI = 9.8 V, IO = 5 to 500 mA 8 42 mV
Quiescent current
= 9.5 to 16V, IO = 0mA
V
I
= 9.8 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5 mA
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 9 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
28/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 10.5 ± 1 V
I
= 50 mA, VI = 10.5 V 8.33 8.5 8.67
Output voltage
O
= 50 mA, VI = 10.5 V, Ta = -25 to 85°C 8.16 8.84
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 9.5 to 16 V, IO = 5 mA 8 42 mV
Load regulation VI = 9.8 V, IO = 5 to 500 mA 8 42 mV
Quiescent current
= 9.5 to 16V, IO = 0mA
V
I
= 9.8 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5 mA
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
I
= 200 mA 0.2 0.35
V
Dropout voltage
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
Control input logic high Ta = -40 to 125°C 2 V
V
IH
Control input current VI = 9 V, VC = 6 V 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 0.7
I
O
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
V
Doc ID 2574 Rev 24 29/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection
I
= 50 mA, VI = 10.5 V, Ta = 25°C 8.33 8.5 8.67
Output voltage
O
= 50 mA, VI = 10.5 V 8.145 8.855
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit Ta = 25°C 1 A
Line regulation VI = 9.5 to 16 V, IO = 5 mA 8 44 mV
Load regulation VI = 9.8 V, IO = 5 to 500 mA 8 44 mV
Quiescent current
= 9.5 to 16V, IO = 0mA
V
I
= 9.8 to 16V, IO=500mA 12
V
I
= 9 V OFF MODE 70 160 µA
V
I
ON MODE
0.7 2.5 mA
f = 120 Hz 72
= 5 mA, VI = 10.5 ± 1 V
I
O
= 25°C
T
a
dBf = 1 kHz 67
f = 10 kHz 57
eN Output noise voltage B = 10 Hz to 100 kHz, T
I
= 200 mA 0.2 1.3
V
Dropout voltage
d
V
Control input logic low 0.8 V
IL
Control input logic high 2 V
V
IH
Control input current VI = 9 V, VC = 6 V, Ta = 25°C 10 µA
I
I
Output bypass
C
O
capacitance
O
= 500 mA 0.4 1.3
I
O
ESR = 0.1 to 10 Ω, I
= 25°C 50 µV
a
= 0 to 500 mA 2 10 µF
O
V
30/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 11 ± 1 V
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
V
d
V
IL
V
IH
I
I
C
O
I
= 50 mA, VI = 11 V 8.91 9 9.09
Output voltage
O
= 50 mA, VI = 11 V, Ta = -25 to 85°C 8.82 9.18
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 10 to 16 V, IO = 5 mA 9 45 mV
Load regulation VI = 10.3 V, IO = 5 to 500 mA 9 45 mV
Quiescent current
VI = 10 to 16V, IO = 0mA
V
= 10.3 to 16V,
I
ON MODE
IO = 500mA
= 10 V OFF MODE 70 140 µA
V
I
0.7 1.5
mA
12
f = 120 Hz 71
dBf = 1 kHz 66
f = 10 kHz 56
I
= 200 mA 0.2 0.35
Dropout voltage
O
= 500 mA 0.4 0.7
I
O
V
Control input logic low Ta = -40 to 125°C 0.8 V
Control input logic high Ta = -40 to 125°C 2 V
Control input current VI = 10 V, VC = 6 V 10 µA
Output bypass capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
Doc ID 2574 Rev 24 31/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 11 ± 1 V
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
V
d
V
IL
V
IH
I
I
C
O
I
= 50 mA, VI = 11 V 8.82 9 9.18
Output voltage
O
= 50 mA, VI = 11 V, Ta = -25 to 85°C 8.64 9.36
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 10 to 16 V, IO = 5 mA 9 45 mV
Load regulation VI = 10.3 V, IO = 5 to 500 mA 9 45 mV
Quiescent current
VI = 10 to 16V, IO = 0mA
V
= 10.3 to 16V,
I
ON MODE
IO = 500mA
= 10 V OFF MODE 70 140 µA
V
I
0.7 1.5
mA
12
f = 120 Hz 71
dBf = 1 kHz 66
f = 10 kHz 56
I
= 200 mA 0.2 0.35
Dropout voltage
O
= 500 mA 0.4 0.7
I
O
V
Control input logic low Ta = -40 to 125°C 0.8 V
Control input logic high Ta = -40 to 125°C 2 V
Control input current VI = 10 V, VC = 6 V 10 µA
Output bypass capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
32/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Electrical characteristics
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 14 ± 1 V
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
V
d
V
IL
V
IH
I
I
C
O
I
= 50 mA, VI = 15 V 11.88 12 12.12
Output voltage
O
= 50 mA, VI = 15 V, Ta = -25 to 85°C 11.76 12.24
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 13 to 16 V, IO = 5 mA 12 60 mV
Load regulation VI = 13.3 V, IO = 5 to 500 mA 12 60 mV
Quiescent current
VI = 13 to 16V, IO = 0mA
V
= 13.3 to 16V,
I
ON MODE
IO = 500mA
= 13 V OFF MODE 70 140 µA
V
I
0.7 1.5
mA
12
f = 120 Hz 69
dBf = 1 kHz 64
f = 10 kHz 54
I
= 200 mA 0.2 0.35
Dropout voltage
O
= 500 mA 0.4 0.7
I
O
V
Control input logic low Ta = -40 to 125°C 0.8 V
Control input logic high Ta = -40 to 125°C 2 V
Control input current VI = 13 V, VC = 6 V 10 µA
Output bypass capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
Doc ID 2574 Rev 24 33/50
Electrical characteristics LFxxAB, LFxxC
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
V
O
V
I
I
O
ΔV
O
ΔV
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 14 ± 1 V
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
V
d
V
IL
V
IH
I
I
C
O
I
= 50 mA, VI = 14 V 11.76 12 12.24
Output voltage
O
= 50 mA, VI = 14 V, Ta = -25 to 85°C 11.52 12.48
I
O
V
Operating input voltage IO = 500 mA 16 V
Output current limit 1 A
Line regulation VI = 13 to 16 V, IO = 5 mA 12 60 mV
Load regulation VI = 13.3 V, IO = 5 to 500 mA 12 60 mV
Quiescent current
VI = 13 to 16V, IO = 0mA
V
= 13.3 to 16V,
I
ON MODE
IO = 500mA
= 13 V OFF MODE 70 140 µA
V
I
0.7 1.5
mA
12
f = 120 Hz 69
dBf = 1 kHz 64
f = 10 kHz 54
I
= 200 mA 0.2 0.35
Dropout voltage
O
= 500 mA 0.4 0.7
I
O
V
Control input logic low Ta = -40 to 125°C 0.8 V
Control input logic high Ta = -40 to 125°C 2 V
Control input current VI = 13 V, VC = 6 V 10 µA
Output bypass capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
34/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Typical performance characteristics

5 Typical performance characteristics

Unless otherwise specified 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
O(NOM)
= 3.3 V.
Figure 8. Short circuit current vs. input
voltage
Doc ID 2574 Rev 24 35/50

Figure 9. Supply current vs. temperature

Typical performance characteristics LFxxAB, LFxxC

Figure 10. Logic controlled precision 3.3 / 5.0 V selectable output

Figure 11. Sequential multi-output supply

36/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Typical performance characteristics

Figure 12. Multiple supply with ON / OFF toggle switch

Figure 13. Basic inhibit functions

Doc ID 2574 Rev 24 37/50
Typical performance characteristics LFxxAB, LFxxC

Figure 14. Delayed turn-on

Figure 15. Low voltage bulb blinker

38/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Package mechanical data

6 Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.

Table 31. TO-220 mechanical data

Type STD - ST Dual Gauge Type STD - ST Single Gauge
Dim.
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
mm. mm.
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
In spite of some difference in tolerances, the packages are compatible.
Doc ID 2574 Rev 24 39/50
Package mechanical data LFxxAB, LFxxC

Figure 16. Drawing dimension TO-220 (type STD-ST Dual Gauge)

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.
40/50 Doc ID 2574 Rev 24
0015988_S
LFxxAB, LFxxC Package mechanical data

Figure 17. Drawing dimension TO-220 (type STD-ST Single Gauge)

8174627_B
Doc ID 2574 Rev 24 41/50
Package mechanical data LFxxAB, LFxxC

Figure 18. Drawing dimension tube for TO-220 Dual Gauge (mm.)

Figure 19. Drawing dimension tube for TO-220 Single Gauge (mm.)

42/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Package mechanical data
PENTAWATT (Vertical) mechanical data
Dim.
Min. Typ. Max. Min. Typ. Max.
mm. inch.
A4.8 0.189 C1.37 0.054 D 2.4 2.8 0.094 0.110
D1 1.2 1.35 0.047 0.053
E0.35 0.55 0.014 0.022 F0.8 1.05 0.031 0.041
F1 1 1.4 0.039 0.055
G 3.2 3.4 3.6 0.126 0.134 0.142 G1 6.6 6.8 7 0.260 0.268 0.276 H2 10.4 0.409 H3 10.05 10.4 0.396 0.409
L 17.85 0.703
L1 15.75 0.620 L2 21.4 0.843 L3 22.5 0.886 L5 2.6 3 0.102 0.118 L6 15.1 15.8 0.594 0.622 L7 6 6.6 0.236 0.260
M 4.5 0.177
M1 4 0.157
Dia1 3.65 3.85 0.144 0.152
P010E
Doc ID 2574 Rev 24 43/50
Package mechanical data LFxxAB, LFxxC
H
TO-220FP mechanical data
Dim.
mm. inch.
Min. Typ Max. Min. Typ. Max.
A 4.40 4.60 0.173 0.181
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
L3 28.6 30.6 1.126 1.204
L4 9.8 10.6 0.3850.417
L5 2.93.6 0.114 0.142
L6 15.9 16.4 0.626 0.645
L7 99.3 0.354 0.366
DIA. 33.2 0.118 0.126
44/50 Doc ID 2574 Rev 24
7012510A-
LFxxAB, LFxxC Package mechanical data
DPAK mechanical data
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 2.2 2.4 0.086 0.094 A1 0.9 1.1 0.035 0.043 A2 0.03 0.23 0.001 0.009
B 0.64 0.9 0.025 0.035
b4 5.2 5.4 0.204 0.212
C 0.45 0.6 0.017 0.023
C2 0.48 0.6 0.019 0.023
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
e2.28 0.090
e1 4.4 4.6 0.173 0.181
H 9.35 10.1 0.368 0.397
L 1 0.039
(L1)
2.8 0.110 L2 0.8 0.031 L4 0.6 1 0.023 0.039
R 0.2 0.008
V2 8°0°
0068772-F
Doc ID 2574 Rev 24 45/50
Package mechanical data LFxxAB, LFxxC
PPAK mechanical data
Dim.
Min. Typ. Max. Min. Typ. Max.
A 2.2 2.4 0.086 0.094
A1 0.9 1.1 0.035 0.043
A2 0.03 0.23 0.001 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 0.48 0.6 0.019 0.023
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
G4.9 5.25 0.193 0.206
G1 2.38 2.7 0.093 0.106
H 9.35 10.1 0.368 0.397
L2 0.8 1 0.031
L4 0.6 1 0.023 0.039
L5 1
L6 2.8 0.110
mm. inch.
0.039
0.039
46/50 Doc ID 2574 Rev 24
0078180-E
LFxxAB, LFxxC Package mechanical data
Tape & reel DPAK-PPAK mechanical data
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 330 12.992
C12.8 13.0 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 0.268 0.272 0.2.76
Bo 10.40 10.50 10.60 0.409 0.413 0.417
Ko 2.55 2.65 2.75 0.100 0.104 0.105
Po 3.9 4.0 4.1 0.153 0.157 0.161
P7.98.0 8.1 0.311 0.315 0.319
Doc ID 2574 Rev 24 47/50
Order codes LFxxAB, LFxxC

7 Order codes

Table 32. Order codes

Packages
TO-220 TO-220FP DPAK (tape and reel) PPAK PPAK (tape and reel)
LF15ABV
(1)
LF15ABP
LF18CP
LF18ABP
LF25CP
LF25ABP
(1)
(1)
(1)
(1)
(1)
LF15ABDT-TR LF15ABPT
(1)
LF18CDT-TR LF18CPT-TR 1.8 V
LF18CDT-TRY
(2)
LF18ABDT-TR LF18ABPT-TR 1.8 V
LF25CDT-TR LF25CPT-TR 2.5 V
LF25CDT-TRY
LF25ABDT-TR LF25ABPT
LF25ABDT-TRY
(2)
(1)
(2)
LF33CV LF33CDT-TR LF33CPT-TR 3.3 V
LF33CDT-TRY
(2)
LF33CPT-TRY
(2)
LF33ABV LF33ABDT-TR 3.3 V
LF50CV LF50CDT-TR LF50CPT-TR 5 V
LF50CDT-TRY
(2)
LF50CPT-TRY
(2)
LF50ABV LF50ABP LF50ABDT-TR LF50ABPT-TR 5 V
(2)
(2)
(1)
LF60ABPT-TR
(1)
(1)
LF60CV LF60CP
LF60ABV LF60ABP
LF80CV LF80CP
LF80ABV LF80ABP
(1)
(1)
(1)
(1)
LF50ABDT-TRY
LF60CDT-TR LF60CPT-TR
LF60ABDT-TR LF60ABPT
LF80CDT-TR 8 V
LF80CDT-TRY
LF80ABDT-TR 8 V
LF85CDT-TR LF85CPT-TR 8.5 V
LF85CDT-TRY
(2)
LF85ABPT
LF90CV LF90CP
LF90ABP
LF120CP
(1)
(1)
(1)
LF90CDT-TR LF90CPT-TR 9 V
LF120CDT-TR 12 V
LF120ABV LF120ABDT-TR LF120ABPT
1. Available on request.
2. Automotive Grade products.
(1)
LF85CPT-TRY
LF85ABPT-TR 8.5 V
(1)
(2)
Output
voltages
1.5 V
1.8 V
2.5 V
2.5 V
2.5 V
3.3 V
5 V
5 V
6 V
6 V
8 V
8.5 V
9 V
12 V
48/50 Doc ID 2574 Rev 24
LFxxAB, LFxxC Revision history

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 b le 1 in cover page.
26-Nov-2007 19 Modified: Ta b le 32 .
16-Jan-2008 20
12-Feb-2008 21 Modified: Table 32 on page 48.
10-Jul-2008 22 Modified: Table 32 on page 48.
Added new order codes for Automotive grade products see Table 32 on
page 48.
05-May-2010 23
16-Nov-2010 24 Modified: R
Added: Table 31 on page 39, Figure 16 on page 40, Figure 17 on page 41,
Figure 18 and Figure 19 on page 42.
value for TO-220 Table 3 on page 7.
thJC
Doc ID 2574 Rev 24 49/50
LFxxAB, LFxxC
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