LTC1531 Datasheet, PDF (5/16 Pages) Linear Technology – Self-Powered Isolated Comparator

WU
W
TI I G DIAGRA
V_REG
CMPOUT
VALID
DATA
POWER CYCLE
960µs
POWER
Hi-Z
POWER-LISTEN CYCLE
1152µs
LTC1531
LISTEN CYCLE
192µs
LISTEN
108µs
200ns
1531 TD01
BLOCK DIAGRAM
V_CC
V_CC 1
VALID 25
POWERED SIDE
VOLTAGE
PUMP
TIMING
DATA 26
QD
R
DECODE
POWER-ON
RESET
ZCDATA 27
GND 28
ZERO-CROSS
COMPARATOR
4
3
2
ZCPOS ZCNEG SHDN
ISOLATION
BARRIER
V_PW
11
3.3V
DET
TRANSMIT
AND
DRIVER
TIMING
ISOLATED SIDE
LATCH
COMPARE
2.5V
REG
V1
18
V2
Σ
17
V3
Σ
16
V4
15
V_REG
13
14
ISOGND
CMPOUT
12
1531 BD
5