SC1155

PROGRAMMABLE SYNCHRONOUS

DC/DC HYSTERETIC CONTROLLER

WITH VRM 9.0 VID RANGE

© 2000 SEMTECH CORP.

PRELIMINARY - August 7, 2000

8

DYNAMIC ELECTRICAL CHARACTERISTICS (cont.)

Unless specified: 0 < T

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

HIGH-SIDE Vds SENSING (Cont.)

(1)

POWER GOOD

(1)

Comparator Propagation

Delay

t

PWRGD

1µs

SOFTSTART

(1)

Comparator Propagation

Delay

t

SLST

overdrive = 10mv

560

900

ns

DEADTIME

(2)

Driver Nonoverlap Time

t

NOL

C

on LOWDR

30

100

ns

LODRV

(1)

Propagation Delay

t

LODRVDLY

400

ns

Notes

(1) Guaranteed, but not tested.

(2) Test circuit and timing diagram.

(3) This device is ESD sensitive. Use of standard ESD handling precautions is required.

TEST CIRCUIT

TIMING DIAGRAM