L5951 查看數據表（PDF） - STMicroelectronics

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L5951

Triple output multifunction voltage regulator for car radio with IDR/class2 interface

STMicroelectronics 

L5951

Electrical specifications

Table 6. Electrical characteristics (continued)

Symbol

Parameter

Test Condition

Min. Typ. Max. Unit

EN switch input current

VBAT = 14V, EN  2 V

VBAT = 14V, EN  0.8 V

0

A

0

A

VENL, ENH EN input threshold voltage

VRES, L Reset(1) output low voltage

VBAT = 14V, VIL

VBAT = 14V, VIH

2

0.8

V

Set VBAT so VREG2 drops 0.30 V

0

0.02 0.4

V

VRES

Reset(1) output voltage threshold DunetcilreRaesseetV(1B)AdTrsoopVs REG2 drops

VREG2

- 0.20

V

VRES, HYS Reset threshold hysteresis

) 3.3V/100mA DC characteristics for regulator output 1

50

mV

t(s VREG1 Output voltage

roduc Vline Line regulation

IREG1 =100mA

3.14 3.3 3.46 V

7 V  VBAT  26 V

(Measure VREG1 Across VBAT

Range)

7

15 mV

te P Vload Load regulation

0.5mA  IREG1  100mA

(Measure VREG1 across VLOAD

range)

8

50 mV

sole VDROPOUT

Dropout voltage (Measure VBAT -

VREG1 when VREG1 drops 0.1V)

Ob Ilim1 Current limit

t(s) - SVR1 Reg1 supply voltage rejection

IREG1 = 100mA

IREG1 = 5mA

IREG1 = IREG2 = IREG3 = 50mA

f = 20 to 20kHz

VBAT = 14Vdc, 1Vac,pp

1

2.2

V

0.12 1.5

V

200

mA

45

dB

uc 5V/100mA regulator output 2

rod VREG2 Output voltage

te P Vline Line regulation

Obsole Vload Load regulation

IREG2 =100mA

4.75

5

5.25

V

7V  VBAT  26V

(Measure VREG2 across VBAT

range)

6

40 mV

0.5mA  IREG2  100mA

(Measure VREG2 across VLOAD

range)

14 100 mV

VDROPOUT

Dropout voltage (Measure VBAT -

VREG2 when VREG2 drops 0.1V)

IREG2 =100mA

IREG2 =5mA

450

mV

22

mV

Ilim2 Current limit

200

mA

SVR2 Reg2 supply voltage rejection

IREG1 = IREG2 = IREG3 = 50mA

f = 20 to 20kHz

45

dB

VBAT = 14Vdc, 1Vac,pp

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