Page 1
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
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
February 2012 Doc ID 2574 Rev 25 1/50
www.st.com
50
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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 25
Page 3
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 25 3/50
Page 4
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 25
Page 5
LFxxAB, LFxxC Diagram
1 Diagram
Figure 1. Block diagram
Doc ID 2574 Rev 25 5/50
Page 6
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 25
Page 7
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 25 7/50
Page 8
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
ΔVOLoad regulation VI = 2.8 V, IO = 5 to 500 mA 2 10 mV
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
Quiescent current
I
d
= 2.5 to 16V, IO = 0mA
V
I
= 2.8 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 82
SVR Supply voltage rejection I
= 5 mA, VI = 3.5 ± 1 V
O
f = 10 kHz 65
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
V
Dropout voltage IO = 200 mA 1 V
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 77
8/50 Doc ID 2574 Rev 25
Page 9
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
ΔVOLoad regulation VI = 3.3 V, IO = 5 to 500 mA 2 10 mV
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
Quiescent current
I
d
= 2.5 to 16V, IO = 0mA
V
I
= 3.1 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 82
SVR Supply voltage rejection I
= 5 mA, VI = 3.5 ± 1 V
O
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
V
Dropout voltage IO = 200 mA 0.7 V
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 77
Doc ID 2574 Rev 25 9/50
Page 10
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
ΔVOLoad regulation VI = 3.3 V, IO = 5 to 500 mA 2 10 mV
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
Quiescent current
I
d
= 2.5 to 16V, IO = 0mA
V
I
= 3.1 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 82
SVR Supply voltage rejection I
= 5 mA, VI = 3.5 ± 1 V
O
f = 10 kHz 60
eN Output noise voltage B = 10 Hz to 100 kHz 50 µV
V
Dropout voltage IO = 200 mA 0.7 V
d
V
Control input logic low Ta = -40 to 125°C 0.8 V
IL
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 77
10/50 Doc ID 2574 Rev 25
Page 11
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
ΔVOLoad regulation VI = 3.3 V, IO = 5 to 500 mA 2 15 mV
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
= 2.5 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 3.1 to 16V, IO=500mA 12
V
I
VI = 6 V OFF MODE 50 120 µA
= 5 mA, VI = 3.5 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 60
0.5 2
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
Doc ID 2574 Rev 25 11/50
Page 12
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
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 12 mV
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
Quiescent current
I
d
= 3.5 to 16V, IO = 0mA
V
I
= 3.8 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 82
SVR Supply voltage rejection I
= 5 mA, VI = 4.5 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 77
V
12/50 Doc ID 2574 Rev 25
Page 13
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
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 15 mV
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
= 3.5 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 3.8 to 16V, IO=500mA 12
V
I
VI = 6 V OFF MODE 50 120 µA
= 5 mA, VI = 4.5 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
0.5 2
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
Doc ID 2574 Rev 25 13/50
Page 14
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
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 12 mV
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
Quiescent current
I
d
= 3.5 to 16V, IO = 0mA
V
I
= 3.8 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 82
SVR Supply voltage rejection I
= 5 mA, VI = 4.5 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 77
V
14/50 Doc ID 2574 Rev 25
Page 15
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
ΔVOLoad regulation VI = 3.8 V, IO = 5 to 500 mA 2 15 mV
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
= 3.5 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 3.8 to 16V, IO=500mA 12
V
I
VI = 6 V OFF MODE 50 120 µA
= 5 mA, VI = 4.5 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 82
dBf = 1 kHz 77
f = 10 kHz 65
0.5 2
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
Doc ID 2574 Rev 25 15/50
Page 16
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
ΔVOLoad regulation VI = 4.6 V, IO = 5 to 500 mA 3 16 mV
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
Quiescent current
I
d
= 4.3 to 16V, IO = 0mA
V
I
= 4.6 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 80
SVR Supply voltage rejection I
= 5 mA, VI = 5.3 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 75
V
16/50 Doc ID 2574 Rev 25
Page 17
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
ΔVOLoad regulation VI = 4.6 V, IO = 5 to 500 mA 3 16 mV
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
Quiescent current
I
d
= 4.3 to 16V, IO = 0mA
V
I
= 4.6 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 80
SVR Supply voltage rejection I
= 5 mA, VI = 5.3 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 75
V
Doc ID 2574 Rev 25 17/50
Page 18
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
ΔVOLoad regulation VI = 4.6 V, IO = 5 to 500 mA 3 19 mV
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
= 4.3 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 4.6 to 16V, IO=500mA 12
V
I
VI = 6 V OFF MODE 50 120 µA
= 5 mA, VI = 5.3 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 80
dBf = 1 kHz 75
f = 10 kHz 65
0.5 2
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
18/50 Doc ID 2574 Rev 25
Page 19
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
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 25 mV
I
= 50 mA, VI = 7 V 4.95 5 5.05
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
Quiescent current
I
d
= 6 to 16V, IO = 0mA
V
I
= 6.3 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 76
SVR Supply voltage rejection I
= 5 mA, VI = 7 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 71
V
Doc ID 2574 Rev 25 19/50
Page 20
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
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 28 mV
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
= 6 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 6.3 to 16V, IO=500mA 12
V
I
VI = 6 V OFF MODE 50 120 µA
= 5 mA, VI = 7 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
0.5 2
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
20/50 Doc ID 2574 Rev 25
Page 21
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
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 25 mV
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
Quiescent current
I
d
= 6 to 16V, IO = 0mA
V
I
= 6.3 to 16V, IO=500mA 12
V
I
ON MODE
0.5 1
VI = 6 V OFF MODE 50 100 µA
f = 120 Hz 76
SVR Supply voltage rejection I
= 5 mA, VI = 7 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 6 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 71
V
Doc ID 2574 Rev 25 21/50
Page 22
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
ΔVOLoad regulation VI = 6.3 V, IO = 5 to 500 mA 5 28 mV
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
= 6 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 6.3 to 16V, IO=500mA 12
V
I
VI = 6 V OFF MODE 50 120 µA
= 5 mA, VI = 7 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 6 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 76
dBf = 1 kHz 71
f = 10 kHz 60
0.5 2
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
22/50 Doc ID 2574 Rev 25
Page 23
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
ΔVOLoad regulation VI = 7.3 V, IO = 5 to 500 mA 6 30 mV
I
= 50 mA, VI = 8 V 5.94 6 6.06
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
Quiescent current
I
d
= 7 to 16V, IO = 0mA
V
I
= 7.3 to 16V, IO=500mA 12
V
I
ON MODE
0.7 1.5
VI = 9 V OFF MODE 70 140 µA
f = 120 Hz 75
SVR Supply voltage rejection I
= 5 mA, VI = 8 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 9 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 70
V
Doc ID 2574 Rev 25 23/50
Page 24
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
ΔVOLoad regulation VI = 7.3 V, IO = 5 to 500 mA 6 30 mV
I
= 50 mA, VI = 8 V 5.88 6 6.12
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
Quiescent current
I
d
= 7 to 16V, IO = 0mA
V
I
= 7.3 to 16V, IO=500mA 12
V
I
ON MODE
0.7 1.5
VI = 9 V OFF MODE 70 140 µA
f = 120 Hz 75
SVR Supply voltage rejection I
= 5 mA, VI = 8 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 9 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 70
V
24/50 Doc ID 2574 Rev 25
Page 25
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
V
Operating input voltage IO = 500 mA 16 V
I
I
Output current limit 1 A
O
ΔV
Line regulation VI = 9 to 16 V, IO = 5 mA 8 40 mV
O
ΔVOLoad regulation VI = 9.3 V, IO = 5 to 500 mA 8 40 mV
O
= 50 mA, VI = 10 V, Ta = -25 to 85°C 7.84 8.16
I
O
V
Quiescent current
I
d
= 9 to 16V, IO = 0mA
V
I
= 9.3 to 16V, IO=500mA 12
V
I
ON MODE
0.7 1.5
VI = 9 V OFF MODE 70 140 µA
f = 120 Hz 72
SVR Supply voltage rejection I
= 5 mA, VI = 10 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 9 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 67
V
Doc ID 2574 Rev 25 25/50
Page 26
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
ΔVOLoad regulation VI = 9.3 V, IO = 5 to 500 mA 8 40 mV
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
Quiescent current
I
d
= 9 to 16V, IO = 0mA
V
I
= 9.3 to 16V, IO=500mA 12
V
I
ON MODE
0.7 1.5
VI = 9 V OFF MODE 70 140 µA
f = 120 Hz 72
SVR Supply voltage rejection I
= 5 mA, VI = 10 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 9 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 67
V
26/50 Doc ID 2574 Rev 25
Page 27
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
ΔVOLoad regulation VI = 9.3 V, IO = 5 to 500 mA 8 44 mV
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
= 9 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 9.3 to 16V, IO=500mA 12
V
I
VI = 9 V OFF MODE 70 160 µA
= 5 mA, VI = 10 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 9 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
0.7 2.5
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
Doc ID 2574 Rev 25 27/50
Page 28
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
ΔVOLoad regulation VI = 9.8 V, IO = 5 to 500 mA 8 42 mV
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
Quiescent current
I
d
= 9.5 to 16V, IO = 0mA
V
I
= 9.8 to 16V, IO=500mA 12
V
I
ON MODE
0.7 1.5
VI = 9 V OFF MODE 70 140 µA
f = 120 Hz 72
SVR Supply voltage rejection I
= 5 mA, VI = 10.5 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 9 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 67
V
28/50 Doc ID 2574 Rev 25
Page 29
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
ΔVOLoad regulation VI = 9.8 V, IO = 5 to 500 mA 8 42 mV
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
Quiescent current
I
d
= 9.5 to 16V, IO = 0mA
V
I
= 9.8 to 16V, IO=500mA 12
V
I
ON MODE
0.7 1.5
VI = 9 V OFF MODE 70 140 µA
f = 120 Hz 72
SVR Supply voltage rejection I
= 5 mA, VI = 10.5 ± 1 V
O
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 9 V, VC = 6 V 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 0.7
ESR = 0.1 to 10 Ω, I
= 0 to 500 mA 2 10 µF
O
mA
dBf = 1 kHz 67
V
Doc ID 2574 Rev 25 29/50
Page 30
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
ΔVOLoad regulation VI = 9.8 V, IO = 5 to 500 mA 8 44 mV
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
= 9.5 to 16V, IO = 0mA
V
I
Quiescent current
I
d
= 9.8 to 16V, IO=500mA 12
V
I
VI = 9 V OFF MODE 70 160 µA
= 5 mA, VI = 10.5 ± 1 V
I
SVR Supply voltage rejection
O
= 25°C
T
a
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
V
Control input logic high 2 V
IH
I
Control input current VI = 9 V, VC = 6 V, Ta = 25°C 10 µA
I
Output bypass
C
O
capacitance
O
IO = 500 mA 0.4 1.3
ESR = 0.1 to 10 Ω, I
O
ON MODE
mA
f = 120 Hz 72
dBf = 1 kHz 67
f = 10 kHz 57
0.7 2.5
= 25°C 50 µV
a
V
= 0 to 500 mA 2 10 µF
30/50 Doc ID 2574 Rev 25
Page 31
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
ΔVOLoad regulation VI = 10.3 V, IO = 5 to 500 mA 9 45 mV
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
Quiescent current
I
d
= 10 to 16V, IO = 0mA
V
I
V
= 10.3 to 16V,
I
I
= 500mA
O
= 10 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5
12
f = 120 Hz 71
SVR Supply voltage rejection I
= 5 mA, VI = 11 ± 1 V
O
f = 10 kHz 56
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 10 V, VC = 6 V 10 µA
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
mA
dBf = 1 kHz 66
V
Doc ID 2574 Rev 25 31/50
Page 32
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
ΔVOLoad regulation VI = 10.3 V, IO = 5 to 500 mA 9 45 mV
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
Quiescent current
I
d
= 10 to 16V, IO = 0mA
V
I
V
= 10.3 to 16V,
I
I
= 500mA
O
= 10 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5
12
f = 120 Hz 71
SVR Supply voltage rejection I
= 5 mA, VI = 11 ± 1 V
O
f = 10 kHz 56
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 10 V, VC = 6 V 10 µA
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
mA
dBf = 1 kHz 66
V
32/50 Doc ID 2574 Rev 25
Page 33
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
ΔVOLoad regulation VI = 13.3 V, IO = 5 to 500 mA 12 60 mV
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
Quiescent current
I
d
= 13 to 16V, IO = 0mA
V
I
V
= 13.3 to 16V,
I
I
= 500mA
O
= 13 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5
12
f = 120 Hz 69
SVR Supply voltage rejection I
= 5 mA, VI = 14 ± 1 V
O
f = 10 kHz 54
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 13 V, VC = 6 V 10 µA
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
mA
dBf = 1 kHz 64
V
Doc ID 2574 Rev 25 33/50
Page 34
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
ΔVOLoad regulation VI = 13.3 V, IO = 5 to 500 mA 12 60 mV
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
Quiescent current
I
d
= 13 to 16V, IO = 0mA
V
I
V
= 13.3 to 16V,
I
I
= 500mA
O
= 13 V OFF MODE 70 140 µA
V
I
ON MODE
0.7 1.5
12
f = 120 Hz 69
SVR Supply voltage rejection I
= 5 mA, VI = 14 ± 1 V
O
f = 10 kHz 54
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
V
Control input logic high Ta = -40 to 125°C 2 V
IH
I
Control input current VI = 13 V, VC = 6 V 10 µA
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
mA
dBf = 1 kHz 64
V
34/50 Doc ID 2574 Rev 25
Page 35
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 25 35/50
Figure 9. Supply current vs. temperature
Page 36
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 25
Page 37
LFxxAB, LFxxC Typical performance characteristics
Figure 12. Multiple supply with ON / OFF toggle switch
Figure 13. Basic inhibit functions
Doc ID 2574 Rev 25 37/50
Page 38
Typical performance characteristics LFxxAB, LFxxC
Figure 14. Delayed turn-on
Figure 15. Low voltage bulb blinker
38/50 Doc ID 2574 Rev 25
Page 39
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:
ECOPACK
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
www.st.com
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 25 39/50
Page 40
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 25
0015988_S
Page 41
LFxxAB, LFxxC Package mechanical data
Figure 17. Drawing dimension TO-220 (type STD-ST Single Gauge)
8174627_B
Doc ID 2574 Rev 25 41/50
Page 42
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 25
Page 43
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 25 43/50
Page 44
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 25
7012510A-
Page 45
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 0° 8°0° 8°
0068772-F
Doc ID 2574 Rev 25 45/50
Page 46
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 25
0078180-E
Page 47
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 25 47/50
Page 48
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
LF33CV-DG
(3)
LF33CDT-TRY
(2)
LF33CPT-TRY
(2)
LF33ABV LF33ABDT-TR 3.3 V
LF33ABV-DG
(3)
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)
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
3.3 V
5 V
5 V
6 V
6 V
8 V
8.5 V
9 V
12 V
1. Available on request.
2. Automotive Grade products.
3. TO-220 Dual Gauge frame.
48/50 Doc ID 2574 Rev 25
Page 49
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
26-Nov-2007 19 Modified:
16-Jan-2008 20
12-Feb-2008 21 Modified:
10-Jul-2008 22 Modified:
05-May-2010 23
16-Nov-2010 24 Modified: R
10-Feb-2012 25 Added: order code LF33CV-DG and LF33ABV-DG
Table 1
in cover page.
Ta b l e 3 2
Added new order codes for Automotive grade products see
page 48
Added:
Figure 18
.
Table 32 on page 48
Table 32 on page 48
Table 31 on page 39, Figure 16 on page 40, Figure 17 on page 41
and
.
Figure 19 on page 42
value for TO-220
thJC
.
.
.
Table 3 on page 7
Table 32 on
.
Table 32 on page 48
,
.
Doc ID 2574 Rev 25 49/50
Page 50
LFxxAB, LFxxC
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50/50 Doc ID 2574 Rev 25
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