L5994A datasheet(5/26 Pages) STMICROELECTRONICS

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L5994 - L5994A

VOL

Output low voltage

HSTRAP = PREG5

Isource = 10mA;

HSOURCE = GND

0.5

LINEAR REGULATOR DRIVER SECTION

Imax

Driver current

VFBLIN < 2.5V

Vref

VFBLIN threshold

VDRLIN = 15V

2.44

2.5

2.56

VDRLIN

Input voltage range

4.5

IFBLIN

Bias Current

µA

VCP

Input voltage clamp

Iclamp = 100µA16

“One Shot” activation

threshold (L5994A only)

VDRLIN falling

12.88

13.7

14.52

“One Shot” Pulse (L5994A only)

1.5

µs

INTERNAL REGULATOR DRIVER SECTION

V29

VREG5 output voltage

Vin = 7 to 25V

5.0

5.3

5.5

I29

Totale current capability

VPREG5 = 5.3V

Vin = 7V

V5SW

Swith-over threshold voltage

Vin > 7V, V5SW fall

4.2

4.53

4.8

V12

Reference voltage

Iload = 1mA

Vin = 5 to 20V

Iload = 1 to 5mA

2.45

2.425

2.5

2.55

2.575

I12

Source current at reference

voltage

V12 = Vref-0.3V

POWER GOOD AND ENABLE FUNCTION

V16,V11

RUN1, RUN2, enable voltage

High level

2.4

V16,V11

RUN1, RUN2, disable voltage

Low level

0.8

T10

Power good delay

CRST=100nF

115

147

180

T27,T30

Shutdown delay time before LS

activation (except for over voltage

fault)

CRST=100nF

115

147

180

CRST timing rate

V12 = Vref-0.3V

1.47

ms/nF

Power good high level

IPOWEROK = 40µA

4.1

Power good low level

IPOWEROK = 320µA

0.4

SYNCHRONIZATION

V15

Synchronization pulse width

Fsw = 1MHz

400

Synchronization input voltage

(falling edge)

IPOWEROK = 320µA5

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

ELECTRICAL CHARACTERISTICS (continued)

L5994A 数据表(PDF) 5 Page - STMicroelectronics

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