SC1154CSW(2000) 查看數據表（PDF） - Semtech Corporation

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SC1154CSW
(Rev.:2000)

PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS

Semtech Corporation 

PRELIMINARY - March 1, 2000

PROGRAMMABLE SYNCHRONOUS

DC/DC HYSTERETIC CONTROLLER

FOR ADVANCED PROCESSORS

SC1154

ELECTRICAL CHARACTERISTICS (cont.)

Unless specified: 0 < TJ < 125° C, VIN12V = 12V

PARAMETER

HIGH-SIDE Vds SENSING(1)

SYMBOL CONDITIONS

Response Time

tVDSRESP

VHISENSE = 12v, VIOUTLO

pulsed from 12v to 11.9v,

100ns rise and fall times

VHISENSE = 4.5v, VIOUTLO

pulsed from 4.5v to 4.4v,

100ns rise and fall times

VHISENSE = 3v,

VIOUTLO

pulsed from 3.0v to 2.9v,

100ns rise and fall times

Short Circuit Protection

Rising Edge Delay

tVDSRED

LOSENSE grounded

Sample/Hold Switch turn-

on/turn-off Delay

POWER GOOD

tSWXDLY

3v < VHISENSE < 11v

VLOSENSE = VHISENSE

Comparator Propagation

Delay

tPWRGD

SOFTSTART

Comparator Propagation

Delay

DEADTIME

Driver Nonoverlap Time

tSLST

overdrive = 10mv

tNUL

Note 1: Guaranteed, but not tested

MIN TYP MAX UNITS

2

µs

3

µs

3

µs

300

500

ns

30

100

ns

1

µs

560 900

ns

30

100

ns

© 2000 SEMTECH CORP.

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652 MITCHELL ROAD NEWBURY PARK CA 91320

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