ST1S32 datasheet(5/29 Pages) STMICROELECTRONICS

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ST1S32

Electrical characteristics

Doc ID 023246 Rev 1

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Electrical characteristics

TJ=25 °C, VIN=5 V, unless otherwise specified.

Table 4.

Electrical characteristics

Symbol

Parameter

Test condition

Values

Unit

Min.

Typ.

Max.

VIN

Operating input voltage

range

(1)

2.8

5.5

VINON

Turn-on VCC threshold

(1)

2.4

VINOFF

Turn-off VCC threshold

(1)

2.0

RDSON-P

High-side switch on-

resistance

ISW=300 mA

RDSON-N

Low-side switch on-

resistance

ISW=300 mA

ILIM

Maximum limiting current

(2)

5.0

Oscillator

FSW

Switching frequency

1.2

1.5

1.9

MHz

DMAX

Maximum duty cycle

(2)

100

Dynamic characteristics

VFB

Feedback voltage

0.792

0.8

0.808

Io=10 mA to 4 A(1)

0.776

0.8

0.824

%VOUT/

ΔIOUT

Reference load regulation Io=10 mA to 4 A(2)

0.2

0.6

%VOUT/

ΔVIN

Reference line regulation

VIN= 2.8 V to 5.5 V

(2)

0.2

0.3

DC characteristics

Quiescent current

Duty cycle=0, no load

VFB=1.2 V

630

1200

μA

IQST-BY

Total standby quiescent

current

OFF

μA

Enable

VEN

EN threshold voltage

Device ON level

1.5

Device OFF level

0.5

IEN

EN current

0.1

μA

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