lx1673 Microsemi Corporation, lx1673 Datasheet - Page 2

• Manufacturer Part Number: lx1673
• Description: High Frequency Pwm Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2004
Rev 1.0, 3/18/2005
Supply Voltage (V
Supply Voltage (V
Driver Supply Voltage (V
Driver Supply Voltage (V
Driver Supply Voltage (V
Input Voltage (SS/
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
Junction Temperature Calculation: T
The θ
All of the above assume no airflow.
PW
LQ
THERMAL RESISTANCE
THERMAL RESISTANCE
JA
The limitation on transient time is thermal and is due to zener diodes on the supply
Ground. Currents are positive into, negative out of specified terminal
pins, application of maximum voltages will increase current into that pin and
increase package power dissipation.
TM
numbers are guidelines for the thermal performance of the device/pc-board system.
Plastic TSSOP 20-Pin
Plastic MLPQ 20-Pin
A B S O L U T E M A X I M U M R A T I N G S
DIS
CC
CC
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
) DC ................................................................-0.3V to 5.5V
) Transient .........................................................-0.3V to 6V
) .....................................................................-0.3V to 5.5V
-
-
CCL
CCL
C1
JUNCTION TO
JUNCTION TO
T H E R M A L D A T A
) DC .......................................................-0.3V to 19V
) DC .....................................................-0.3V to 13V
) Transient............................................-0.3V to 16V
J
= T
A
+ (P
A
A
MBIENT
MBIENT
D
x θ
Integrated Products Division
JC
).
, θ
, θ
®
Microsemi
JA
JA
.
High Frequency PWM Regulator
90°C/W
35°C/W
P
RODUCTION
Pb-free 100% Matte Tin Lead Finish
LDOVCC
PGOOD
D
LDDIS
DGND
AGND
LDGD
LDFB
LDDIS
DGND
LDGD
AGND
ATA
LDFB
P A C K A G E P I N O U T
VC1
DIS
SS
N.C. – No Internal Connection
1
S
RSVD – Do Not Use
HEET
10
6
N/U – Not Used
1
PW P
LQ P
(Top View)
(Top View)
ACKAGE
ACKAGE
16
20
11
LX1673
11
BDRV
VCCL
VCC
VS
CS
EAO
EA-
EA+
TDRV
PGND
BDRV
VCCL
VCC
VS
CS
Page 2