Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 5

Copyright

© 2000

Rev. 1.0, 2005-08-10

LX1672

Multiple Output LoadSHARE™ PWM

TM

®

ELECTRICAL CHA RACTERISTICS

Unless otherwise specified, the following specifications apply over the operating ambient temperature 0

°C

LX1672

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

UVLO AND SOFT-START (SS)

3.5

4.0

4.5

V

4.0

4.25

4.5

V

Hysteresis Vcc

0.1

V

SS Input Resistance

20

K

Ω

SS Shutdown Threshold

0.15

V

Hiccup Mode Duty Cycle

10

%

LINEAR REGULATOR CONTROLLER

Voltage Reference Tolerance

2

%

Source Current

6

mA

Sink Current

0.2

mA

DISABLE INPUT

1.0

V

PWM Disable

DISX

Pull down Resistance

80

ΚΩ

2.5

V

LDO Disable

LDDIS

Pull down Resistance

100

K

Ω

Note 1 – X = Phase 1,2

Note 2 – System Specification