Very low drop voltage regulators with inhibit
Features
■ Very low dropout voltage (0.45 V)
■ Very low quiescent current (typ. 50 µA in OFF
mode, 500 µA in ON mode)
■ Output current up to 500 mA
■ Logic-controlled electronic shutdown
■ Output voltages of 1.5; 1.8; 2.5; 3.3; 4.7; 5; 6;
8; 8.5; 9; 12 V
■ Automotive Grade product: 1.8 V, 2.5 V, 3.3 V,
5.0 V, 8.0 V, 8.5 V 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
DPAK PPAK
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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 7 ± 1 V
I
= 50 mA, VI = 7 V 4 . 9 555 . 0 5
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 8 ± 1 V
I
= 50 mA, VI = 8 V 5 . 9 466 . 0 6
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
dB f = 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
Δ V
O
Δ V
O
I
d
SVR Supply voltage rejection IO = 5 mA, VI = 8 ± 1 V
I
= 50 mA, VI = 8 V 5 . 8 866 . 1 2
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
dB f = 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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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
Δ V
O
Δ V
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
dB f = 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 0.09 4 0.110
D1 1.2 1.3 5 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 0.13 4 0.142
G1 6.6 6.8 7 0.260 0.268 0.276
H2 10.4 0.409
H3 10.05 10.4 0.39 6 0.409
L 17.8 5 0.703
L1 15.75 0.620
L2 21.4 0.843
L3 22.5 0.88 6
L5 2.6 3 0.102 0.118
L6 15.1 15.8 0.59 4 0.622
L7 6 6.6 0.23 6 0.260
M 4.5 0.177
M1 4 0.157
Dia1 3 .65 3.8 5 0.144 0.152
P010E
Doc ID 2574 Rev 24 43/50
Package mechanical data LFxxAB, LFxxC
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 0.03 00 . 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 0.09 4 0.106
H 10.0 10.40 0.393 0.409
L2 16 0.630
L3 28 .6 3 0.6 1.126 1.204
L4 9.8 10.6 0.38 50 . 4 1 7
L5 2.93 .6 0.114 0.142
L6 15.9 16.4 0.626 0.645
L7 99 .3 0.3 54 0.3 66
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 0.08 6 0.094
A1 0.9 1.1 0.03 5 0.043
A2 0.03 0.23 0.001 0.009
B 0.64 0.9 0.025 0.035
b 4 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 0.23 6 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 .3 5 10.1 0.3 68 0.39 7
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 0° 8 °0 ° 8°
0068 772-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 0.08 6 0.094
A1 0.9 1.1 0.03 5 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 0.23 6 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 .3 5 10.1 0.3 68 0.39 7
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
007818 0-E
LFxxAB, LFxxC Package mechanical data
Tape & reel DPAK-PPAK mechanical data
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 330 12.99 2
C1 2 .8 13.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N6 0 2 .362
T2 2 . 40 .882
Ao 6.8 06 .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 0.3 11 0.3 15 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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50/50 Doc ID 2574 Rev 24