Microsemi

Integrated Products Division

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

Page 2

Copyright

© 2004

Rev 1.0, 3/18/2005

LX1673

High Frequency PWM Regulator

TM

®

ABSOLUTE MAXI MUM RATI NGS

Output Drive Peak Current Source (HO, LO).......................................1A (500ns)

Output Drive Peak Current Sink (HO, LO) ..........................................1A (500ns)

Operating Temperature Range .........................................................-40°C to 85°C

Maximum Operating Junction Temperature ................................................ 150°C

Storage Temperature Range...........................................................-65°C to 150°C

Lead Temperature (Soldering 180 seconds) ................................................ 235°C

Package Peak Temp. for Solder Reflow (40 Seconds Maximum Exposure).. 260°C(+0, -5)

Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to

Ground. Currents are positive into, negative out of specified terminal

.

The limitation on transient time is thermal and is due to zener diodes on the supply

pins, application of maximum voltages will increase current into that pin and

increase package power dissipation.

TH ERM A L DATA

PW

Plastic TSSOP 20-Pin

THERMAL RESISTANCE

90

°C/W

LQ

Plastic MLPQ 20-Pin

THERMAL RESISTANCE

θ

JA

35°C/W

All of the above assume no airflow.

PACKAGE PIN OUT

LDGD

LDFB

LDDIS

DGND

AGND

CS

VS

VCC

VCCL

BDRV

1

6

11

16

(Top View)

N.C. – No Internal Connection

N/U – Not Used

RSVD – Do Not Use

VC1

PGOOD

LDOVCC

LDGD

LDFB

LDDIS

DGND

AGND

EAO

CS

VS

VCC

VCCL

BDRV

PGND

TDRV

1

10

11

20

DIS

SS

EA+

EA-

(Top View)

Pb-free 100% Matte Tin Lead Finish