lx1665 Microsemi Corporation, lx1665 Datasheet - Page 6

• Manufacturer Part Number: lx1665
• Description: Dual Output Pwm Controllers With 5-bit Dac
• Manufacturer: Microsemi Corporation

LX1664/64A, LX1665/65A
6
V
CC_CORE
INV
SS
C
T
13
1
2
3
100mV
40mV
**
VID0
4
10k
VID1
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
5
D
Error Comp
CS Comp
UAL
DAC
VID2
V
6
CC
DAC OUT
O
P
UTPUT
R O D U C T I O N
VID3
7
FIGURE 5 — LX1664/1665 Block Diagram
UVLO
10.6/10.1
2V Out
VID4
PWM C
8
B L O C K D I A G R A M
Trimmed
2V REF
Internal
ONTROLLERS WITH
V
CC
1.5V
D
V
REG
A T A
Controller
Off-Time
S
Note: Pin numbers are correct for LX1665/1665A, 18-pin package.
Linear Op Amp
H E E T
5-B
R DOM
IT
Before
Break
Make
SYNC EN
DAC
UV Comp
PWM Latch
OV Comp
S
R
Comp
Q
Q
* Not connected on LX1664/1664A.
** 60mV in LX1664A/1665A.
0.7V
LX1665/1665A ONLY
18
17
16
15
14
12
10
11
9
V
TDRV
GND
BDRV
V
OV*
PWRGD*
L
L
DRV
FB
C1
CC