SC1110

SINK AND SOURCE DC/DC CONTROLLER FOR

TERMINATION POWER SUPPLY APPLICATIONS

© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

PRELIMINARY - October 9, 2000

3

BLOCK DIAGRAM

ELECTRICAL CHARACTERISTICS

Unless specified: V

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

MOSFET DRIVERS

Peak DH Sink/Source Current

BSTH - DH = 4.5V, DH - PHASE = 3.0V

0.5

A

DH - PHASE = 1.5V

0.1

Peak DL Sink/Source Current

BSTL - DL = 4.5V, DL - GND = 3.0V

0.5

A

DL - GND = 1.5V

0.1

PROTECTION

Over Current Set Isource

V

180

200

220

µA

SOFT START

Charge Current

V

10

µA

Discharge Current

V

2

µA

POWER GOOD

Upper Threshold

112

%

Lower Threshold

88

%

PWRGD Voltage Low

I

0.5

V

REFERENCE

REFOUT Source Current

3

mA

Input Bias

58

µA

NOTE:

(1) Specification refers to application circuit (Figure 1.).