July 2007
Rev. 18
1/45
LFxxAB LFxxC
Very low drop voltage regulators with inhibit
Features
■Very low dropout voltage (0.45V)
■Very low quiescent current (typ. 50 μA in OFF mode, 500 μA in ON mode)■Output current up to 500 mA ■Logic-controlled electronic shutdown
■Output voltages of 1.5; 1.8; 2.5; 2.7; 3; 3.3; 3.5; 5; 6; 8; 8.5; 9; 12V
■Internal current and thermal limit ■Only 2.2 μF for stability
■Available in ± 1% (AB) or ± 2% (C) selection at 25°C
■Supply voltage rejection: 80db (typ.)■
Temperature range: -40 to 125°C
Description
The LFxxAB/LFxxC are very Low Drop regulators available in PENTAWATT, TO-220, TO-220FP , DPAK and PPAK package and in a wide range of output voltages.
The very Low Drop voltage (0.45V) and the very low quiescent current make them particularly suitable for Low Noise, Low Power applications and specially in battery powered systems.
In the 5 pins configuration (PENTAWATT and PPAK) a Shutdown Logic Control function is
available (pin 2, TTL compatible). This means that when the device is used as a local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. In the three terminal configuration the device has the same electrical performance, but is fixed in the ON state. It requires only a 2.2 μF capacitor for stability allowing space and cost saving.
Table 1.Device summary
Order codes
LF15C LF27AB LF40C LF80AB LF15AB LF30C LF40AB LF85C LF18C LF30AB LF50C LF85AB LF18AB LF33C LF50AB LF90C LF25C LF33AB LF60C LF90AB LF25AB LF35C LF60AB LF120C LF27C
LF35AB
LF80C
LF120AB
https://www.wendangku.net/doc/1e1819698.html,
LFxxAB - LFxxC
2/45Contents
1Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 8Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
LFxxAB - LFxxC Diagram 1 Diagram
3/45
Pin configuration LFxxAB - LFxxC 2 Pin configuration
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LFxxAB - LFxxC Maximum ratings
5/45
3 Maximum ratings
Table 2.
Absolute maximum ratings
Symbol Parameter
Value Unit V I DC input voltage -0.5 to 40(1)1.For 18 < V I < 40 the regulator is in shut-down
V
I O Output current Internally Limited P TOT Power dissipation
Internally Limited
T STG Storage temperature range
-40 to 150°C T OP
Operating junction temperature range
-40 to 125
°C Table 3.
Thermal data
Symbol Parameter
PENTAWATT
TO-220TO-220FP
DPAK/PPAK
Unit R thJC Thermal resistance junction-case 3358°C/W R thJA
Thermal resistance junction-ambient
50
50
60
100
°C/W
Electrical characteristics LFxxAB - LFxxC
6/45
4
Electrical characteristics
Table 4.
Electrical characteristics for LF15AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 3.5 V
1.485 1.5
1.515V I O = 50 mA, V I = 3.5 V , T a = -25 to 85°C 1.470 1.530V I Operating input voltage I O = 500 mA
2.5
16
V I O Output current limit 1A ΔV O Line regulation V I = 2.5 to 16 V , I O = 5 mA 210mV ΔV O
Load regulation
V I = 2.8 V , I O = 5 to 500 mA 210mV I d
Quiescent current
V I = 2.5 to 16V , I O = 0mA
ON MODE 0.5
1mA V I = 2.8 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 3.5 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 1
V V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
LFxxAB - LFxxC Electrical characteristics
7/45
Table 5.
Electrical characteristics for LF15C (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 3.5 V
1.47 1.5
1.53V I O = 50 mA, V I = 3.5 V , T a = -25 to 85°C 1.44 1.56V I Operating input voltage I O = 500 mA
2.5
16
V I O Output current limit 1A ΔV O Line regulation V I = 2.5 to 16 V , I O = 5 mA 210mV ΔV O
Load regulation
V I = 2.8 V , I O = 5 to 500 mA 210mV I d
Quiescent current
V I = 2.5 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 2.8 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 3.5 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 1
V V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
Electrical characteristics LFxxAB - LFxxC
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Table 6.
Electrical characteristics for LF18AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 3.3 V
1.782 1.8
1.818V I O = 50 mA, V I = 3.3 V , T a = -25 to 85°C 1.764 1.836V I Operating input voltage I O = 500 mA
3
16
V I O Output current limit 1A ΔV O Line regulation V I = 2.8 to 16 V , I O = 5 mA 212mV ΔV O
Load regulation
V I = 3.3 V , I O = 5 to 500 mA 210mV I d
Quiescent current
V I = 2.5 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 3.1 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 3.5 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
60eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.7
V V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
LFxxAB - LFxxC
Electrical characteristics
9/45
Table 7.
Electrical characteristics for LF18C (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 3.5 V
1.764 1.8
1.836V I O = 50 mA, V I = 3.5 V , T a = -25 to 85°C 1.728 1.872V I Operating input voltage I O = 500 mA
3
16
V I O Output current limit 1A ΔV O Line regulation V I = 2.8 to 16 V , I O = 5 mA 212mV ΔV O
Load regulation
V I = 3.3 V , I O = 5 to 500 mA 210mV I d
Quiescent current
V I = 2.5 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 3.1 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 3.5 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
60eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.7
V V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
Electrical characteristics LFxxAB - LFxxC
10/45
Table 8.
Electrical characteristics for LF25AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 4.5 V
2.475 2.5
2.525V I O = 50 mA, V I = 4.5 V , T a = -25 to 85°C 2.450
2.550V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 3.5 to 16 V , I O = 5 mA 212mV ΔV O
Load regulation
V I = 3.8 V , I O = 5 to 500 mA 212mV I d
Quiescent current
V I = 3.5 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 3.8 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 4.5 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
LFxxAB - LFxxC Electrical characteristics
11/45
Table 9.
Electrical characteristics for LF25C (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 4.5 V
2.45 2.5
2.55V I O = 50 mA, V I = 4.5 V , T a = -25 to 85°C 2.4
2.6V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 3.5 to 16 V , I O = 5 mA 212mV ΔV O
Load regulation
V I = 3.8 V , I O = 5 to 500 mA 212mV I d
Quiescent current
V I = 3.5 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 3.8 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 4.5 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
Electrical characteristics LFxxAB - LFxxC
12/45
Table 10.
Electrical characteristics for LF27AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 4.7 V
2.673 2.7
2.727V I O = 50 mA, V I = 4.7 V , T a = -25 to 85°C 2.646
2.754V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 3.7 to 16 V , I O = 5 mA 213mV ΔV O
Load regulation
V I = 4 V , I O = 5 to 500 mA 213mV I d
Quiescent current
V I = 3.7 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4 to 16V , I O = 500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 4.7 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
LFxxAB - LFxxC Electrical characteristics
13/45
Table 11.
Electrical characteristics for LF27C (refer to the test circuits, T J = 25°C, C I = 0.1 μF ,C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 4.7 V
2.646 2.7
2.754V I O = 50 mA, V I = 4.7 V , T a = -25 to 85°C 2.592
2.808V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 3.7 to 16 V , I O = 5 mA 213mV ΔV O
Load regulation
V I = 4 V , I O = 5 to 500 mA 213mV I d
Quiescent current
V I = 3.7 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4 to 16V , I O = 500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 4.7 ± 1 V
f = 120 Hz
82dB
f = 1 KHz 77f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
Electrical characteristics LFxxAB - LFxxC
14/45
Table 12.
Electrical characteristics for LF30AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF ,C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 5 V
2.9703
3.03V I O = 50 mA, V I = 5 V , T a = -25 to 85°C 2.94
3.06V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 4 to 16 V , I O = 5 mA 315mV ΔV O
Load regulation
V I = 4.3 V , I O = 5 to 500 mA 315mV I d
Quiescent current
V I = 4 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4.3 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 5 ± 1 V
f = 120 Hz
81dB
f = 1 KHz 76f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
LFxxAB - LFxxC Electrical characteristics
15/45
Table 13.
Electrical characteristics for LF30C (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 5 V
2.943
3.06V I O = 50 mA, V I = 5 V , T a = -25 to 85°C 2.88
3.12V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 4 to 16 V , I O = 5 mA 315mV ΔV O
Load regulation
V I = 4.3 V , I O = 5 to 500 mA 315mV I d
Quiescent current
V I = 4 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4.3 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 5 ± 1 V
f = 120 Hz
81dB
f = 1 KHz 76f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
Electrical characteristics LFxxAB - LFxxC
16/45
Table 14.
Electrical characteristics for LF33AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 5.3 V
3.267 3.3
3.333V I O = 50 mA, V I = 5.3 V , T a = -25 to 85°C 3.234
3.366V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 4.3 to 16 V , I O = 5 mA 316mV ΔV O
Load regulation
V I = 4.6 V , I O = 5 to 500 mA 316mV I d
Quiescent current
V I = 4.3 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4.6 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 5.3 ± 1 V
f = 120 Hz
80dB
f = 1 KHz 75f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
LFxxAB - LFxxC Electrical characteristics
17/45
Table 15.
Electrical characteristics for LF33C (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 5.3 V
3.234 3.3
3.366V I O = 50 mA, V I = 5.3 V , T a = -25 to 85°C 3.168
3.432V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 4.3 to 16 V , I O = 5 mA 316mV ΔV O
Load regulation
V I = 4.6 V , I O = 5 to 500 mA 316mV I d
Quiescent current
V I = 4.3 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4.6 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 5.3 ± 1 V
f = 120 Hz
80dB
f = 1 KHz 75f = 10 KHz
65eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
Electrical characteristics LFxxAB - LFxxC
18/45
Table 16.
Electrical characteristics for LF35AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF ,C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 5.5 V
3.465 3.5
3.535V I O = 50 mA, V I = 5.5 V , T a = -25 to 85°C 3.430
3.570V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 4.5 to 16 V , I O = 5 mA 317mV ΔV O
Load regulation
V I = 4.8 V , I O = 5 to 500 mA 317mV I d
Quiescent current
V I = 4.5 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4.8 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 5.5 ± 1 V
f = 120 Hz
79dB
f = 1 KHz 74f = 10 KHz
60eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
LFxxAB - LFxxC Electrical characteristics
19/45
Table 17.
Electrical characteristics for LF35C (refer to the test circuits, T J = 25°C, C I = 0.1 μF ,C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 5.5 V
3.43 3.5
3.57V I O = 50 mA, V I = 5.5 V , T a = -25 to 85°C 3.36
3.64V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 4.5 to 16 V , I O = 5 mA 317mV ΔV O
Load regulation
V I = 4.8 V , I O = 5 to 500 mA 317mV I d
Quiescent current
V I = 4.5 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 4.8 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 5.5 ± 1 V
f = 120 Hz
79dB
f = 1 KHz 74f = 10 KHz
60eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF
Electrical characteristics LFxxAB - LFxxC
20/45
Table 18.
Electrical characteristics for LF50AB (refer to the test circuits, T J = 25°C, C I = 0.1 μF , C O = 2.2 μF unless otherwise specified.)
Symbol Parameter
Test conditions
Min.Typ.Max.Unit V O Output voltage I O = 50 mA, V I = 7 V
4.955
5.05V I O = 50 mA, V I = 7 V , T a = -25 to 85°C 4.9
5.1V I Operating input voltage I O = 500 mA
16
V I O Output current limit 1A ΔV O Line regulation V I = 6 to 16 V , I O = 5 mA 525mV ΔV O
Load regulation
V I = 6.3 V , I O = 5 to 500 mA 525mV I d
Quiescent current
V I = 6 to 16V , I O = 0mA ON MODE 0.5
1mA V I = 6.3 to 16V , I O =500mA 12
V I = 6 V
OFF MODE 50100
μA
SVR Supply voltage rejection I O = 5 mA, V I = 7 ± 1 V
f = 120 Hz
76dB
f = 1 KHz 71f = 10 KHz
60eN Output noise voltage B = 10 Hz to 100 KHz 50μV V d Dropout voltage I O = 200 mA 0.20.35V I O = 500 mA 0.4
0.7V IL Control input logic low T a = -40 to 125°C 0.8
V V IH Control input logic high T a = -40 to 125°C 2
V I I Control input current V I = 6 V , V C = 6 V
10
μA C O
Output bypass capacitance
ESR = 0.1 to 10 Ω, I O = 0 to 500 mA
2
10
μF