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LF85CPT-TR中文资料

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

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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

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

100

°C/W

Electrical characteristics LFxxAB - LFxxC

6/45

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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

LFxxAB - LFxxC Electrical characteristics

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

LFxxAB - LFxxC

Electrical characteristics

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

Electrical characteristics LFxxAB - LFxxC

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

LFxxAB - LFxxC Electrical characteristics

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

Electrical characteristics LFxxAB - LFxxC

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

LFxxAB - LFxxC Electrical characteristics

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

Electrical characteristics LFxxAB - LFxxC

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF

LFxxAB - LFxxC Electrical characteristics

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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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

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

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

μA C O

Output bypass capacitance

ESR = 0.1 to 10 Ω, I O = 0 to 500 mA

μF