L4954 datasheet(3/7 Pages) STMICROELECTRONICS

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ELECTRICAL CHARACTERISTICS (Refer to the application circuit, VS = 14.4V; Tamb =25

°C;

IOUT10 = 5mA; IOUT8.5 = 5mA; IOUT5 = 5mA; IOUT5 ST-BY = 0.5mA; RHSD1 =16

Ω,RHSD2,3 = 107Ω,

unless otherwise specified.)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Operating Supply Voltage

Maximum Quiescent Current

IOUT10 = 40mA; IOUT8.5 = 175mA;

IOUT5 = 650mA;

IOUT5ST-BY = 100mA; RHSD1 =8

Ω;

RHSD2,3 =53

Ω

Iq,ST-BY

Standby Quiescent Current

EN1, EN2, EN3 = 0

IOUT5, ST-BY = 50mA;

420

µA

EN1, EN2, EN3 = 0

IOUT5, ST-BY = 2mA;

300

µA

VENL

EN1, EN2, EN3 Input Low

Voltage

0.8

VENH

EN1, EN2, EN3 Input High

Voltage (Outputs Active)

10V / 40mA REG 1 OUTPUT

VOUT10

Output Voltage

IOUT10 = 40mA

∆Vline

Line Regulation

VS = 11 to 26V

∆Vload

Load Regulation

Iout10 = 5 to 40mA

VDROPOUT

Dropout Voltage

VS =VOUT10 + 0.1V

Iout10 = 5mA

100

200

VS =VOUT10 + 0.5V

Iout10 = 40mA

500

600

Iq1

Reg 1Quiescent Current

IOUT10 = 5mA

IOUT10 =40mA

Ilim1

Current Limit

100

SVR1

Reg 1Supply Voltage Rejection

f = 0.12 to 10KHz;

IOUT10 = 25mA; VRIP =1Vpp

8.5V / 175mA REG 2 OUTPUT

VOUT8.5

Output Voltage

IOUT8.5 = 175mA

8.5

∆Vline

Line Regulation

VS = 11 to 26V

∆Vload

Load Regulation

Iout8.5 = 5 to 175mA

VDROPOUT

Dropout Voltage

VS =VOUT8.5 + 0.3V

Iout8.5 = 5mA

300

400

VS =VOUT8.5 +1V

Iout8.5 = 175mA

1.1

Iq2

Reg 2 Quiescent Current

IOUT8.5 = 5mA

IOUT8.5 = 175mA

Ilim2

Current Limit

300

SVR2

Reg 1Supply Voltage Rejection

f = 0.12 to 10KHz;

IOUT8.5 = 100mA; VRIP =1Vpp

L4954

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