lx1660 Microsemi Corporation, lx1660 Datasheet - Page 4

• Manufacturer Part Number: lx1660
• Description: Advanced Pwm Controller
• Manufacturer: Microsemi Corporation

LX1660/1661
4
NINV/SS
HICCUP
SGND
OT
INV
V
EN
ADJ
REF
C
T
1
2
3
4
5
6
7
8
1.4V
ENABLE
40mV (1661 only)
V
V
PEAK
VAL
0.7V
O
ERROR
COMP
= 1V
= 2V
TADJ
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
UPGRADE
V
CC
10.6/10.1
UVLO
2V OUT
P
A
R O D U C T I O N
D V A N C E D
HICCUP LATCH
S
R
FIGURE 1 — Block Diagram
B L O C K D I A G R A M
EN
OFFTIME CONTROL
2V REF
Q
Q
INTERNAL
P W M C
V
CC
V
CC
VREG GOOD
10
D
VREG 5V
A T A
O N T R O L L E R
1.5V
HICCUP
S
H E E T
R DOM
PWM LATCH
S
R
BEFORE
BREAK
MAKE
Q
Q
I
MAX
SYNC EN
COMP
90mV
Copyright © 1998
Rev. 1.1
16
15
14
13
12
11
10
9
V
TDRV
PGND
BDRV
V
SYNCEN
CS+
CS-
C1
CC
7/98