LX1664 Microsemi Corporation, LX1664 Datasheet - Page 6

• Manufacturer Part Number: LX1664
• 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
5
Error Comp
CS Comp
DAC
VID2
V
6
CC
DAC OUT
VID3
7
FIGURE 5 — LX1664/1665 Block Diagram
UVLO
10.6/10.1
2V Out
VID4
8
Trimmed
2V REF
Internal
V
CC
1.5V
V
REG
Controller
Off-Time
Note: Pin numbers are correct for LX1665/1665A, 18-pin package.
Linear Op Amp
R DOM
Before
Break
Make
SYNC EN
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