L4909 查看數據表（PDF） - STMicroelectronics

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比赛名单

L4909

EXTERNALLY ADJUSTABLE MULTIFUNCTION REGULATOR

STMicroelectronics 

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Vin

VinA,VinB input DC supply voltage

Io

Vo1, Vo2, Vo3 output currents

Voc

OC output voltage

VENx ENx input voltage

Top

Operating temperature range

Tstg

Storage temperature

L4909

Value

40

internally limited

min (15, Vin)

15

0 to 70

- 40 to 150

Unit

V

V

V

oC

oC

THERMAL DATA

Symbol

Parameter

RTH j-case Thermal Resistance Junction to Case

Value

1.8

Unit

°C/W

ELECTRICAL CHARACTERISTICS (Cout = 100nF; Vin -Vo = 5V; Io = 10mA; Tcase = 25°C unless otherwise

specified

Symbol

Parameter

Test Condition

Min. Typ. Max. Unit

Vo1 REG1 output voltage range

5

12

V

V(FB1) REG1 feedback voltage

EN1=ON;

1.22 1.27 1.32

V

Ilim1 REG1 output current limit

EN1=ON; Vin-Vo1<12V

1.20 1.70

A

-∆-V--V---o--o-1--1-

line regulation

Io1=10mA; Vin-Vo1=3 to 25 V

Io1=10mA; Vin-Vo1=3 to 12 V

0.6

2

%

0.1

∆--V--V---o--o-1--1-

load regulation

Io1=10 mA to 1.2A

Io1=10 mA to 0.5A

0.5

2

%

0.1

Vd1 REG1 drop out

Io1=500mA

2.20

V

SVR1 REG1 supply voltage rejec.

freq=120 Hz to 1KHz

60

dB

Vo2 REG2 output voltage range

5

12

V

V(FB2) REG2 feedback voltage

EN2 = ON;

1.22 1.27 1.32

V

Ilim2 REG2 output current limit

EN2=ON; Vin-Vo2<12V

1.20 1.70

A

∆--V--V---o--o-2--2-

line regulation

Io2=10mA;Vin-Vo2=3 to 25 V

Io2=10mA;Vin-Vo2=3 to 12 V

0.6

2

%

0.1

∆----V-----o---2-

Vo2

load regulation

Io2=10 mA to 1.2A

Io2=10 mA to 0.5A

0.5

2

%

0.1

Vd2 REG2 drop out

Io2=500mA

2.2

V

3/7

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