LX1681 Microsemi Corporation, LX1681 Datasheet - Page 9

• Manufacturer Part Number: LX1681
• Description: VOLTAGE - MODE PWM CONTROLLERS
• Manufacturer: Microsemi Corporation

Copyright © 1999
Rev. 1.0 5/99
0.1µF
C
SS
0.1µF
C
PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document
may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of
all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.
SS
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
2
3
4
1
1
2
3
4
V
V
SS
N.C.
GND
FB
FIGURE 4 — Bootstrap Circuit For 5V Only Operation
O L T A G E
V
SS
GND
BDRV
FIGURE 3 — Current Sensing Using Sense Resistor
P
FB
A P P L I C A T I O N I N F O R M A T I O N
LX1681
R O D U C T I O N
LX1682
- M
TDRV
V
V
CS
TDRV
O D E
CC
C1
V
V
CS
CC
C1
C
8
7
6
5
V
3
12V
BOOST
P W M C
8
7
6
5
C
D
1
A T A
R
R
SET
SET
Q
O N T R O L L E R S
Q
1
D
C
1
2
4
S
C
H E E T
R
V
5V
D
1
SENSE
L
IN
Q
2
1
V
5V
2
IN
L
1
C
2
C
2
V
R
R
LX1681/1682
OUT
1
2
V
R
R
OUT
1
2
9