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SC1154
(Rev.:2000)

PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS

Semtech Corporation 

PROGRAMMABLE SYNCHRONOUS

DC/DC HYSTERETIC CONTROLLER

FOR ADVANCED PROCESSORS

PRELIMINARY - March 1, 2000

ELECTRICAL CHARACTERISTICS (cont.)

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

PARAMETER

SYMBOL

CONDITIONS

HIGH-SIDE VDS SENSING (cont.)

LOSENSE High Level Input

Voltage

VihLOSENSE

VHISENSE = 4.5V,

RIOUT = 10kOhm

VHISENSE = 3V, RIOUT = 10kOhm

VHISENSE = 4.5V (Note 1)

LOSENSE Low Level Input

Voltage

VilLOSENSE VHISENSE = 4.5V (Note 1)

Sample/Hold Resistance

RS/H

4.5V < = 13V

BUFFERED REFERENCE

VREFB Load Regulation

DEADTIME CIRCUIT

VldregREFB 10µA < IREFB < 500µA

LOHIB High Level Voltage

LOHIB Low Level Input

Voltage

VihLOHIB

VilLOHIB

LOWDR High Level Input

Voltage

VihLOWDR (Note 1)

LOWDR Low Level Input

Voltage

VilLOWDR (Note 1)

DRIVE REGULATOR

Output Voltage

VDRV

Load Regulation

VldregDRV

Short Circuit Current

IshortDRV

HIGH-SIDE OUTPUT DRIVER

11.4 < VIN12V < 12.6V,

IDRV = 50mA

1mA < IDRV < 50mA

Peak Output Current

IsrcHIGHDR’ duty cycle < 2%, tpw < 100us,

IsinkHIGHDR

TJ = 125°C

VBOOT - VBOOTLO = 6.5V, VHIGHDR

= 1.5V (src), or VHIGHDR = 5V

(sink) (Note 1)

MIN

0

0

2.85

50

2

2

7

100

2

TYP

65

2

100

SC1154

MAX UNITS

2.0

V

1.0

V

V

1.8

V

80

Ω

mV

V

1.0

V

V

1.0

V

9

V

mV

mA

A

© 2000 SEMTECH CORP.

6

652 MITCHELL ROAD NEWBURY PARK CA 91320

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