Datasheet

LTC2945
29
2945fa
For more information www.linear.com/LTC2945
Ruggedized 4V to 70V High Side Power Monitor with Surge Protection Up to 200V
Isolated Wide Range I
2
C Power Monitor
Typical applicaTions
V
CC
GND
C1
0.1µF
HCPL-063L
FGND
HCPL-063L
2945 TA09
ADR1
ADR0
ADIN
SCL
V
DD
V
IN
V
OUT
INTV
CC
SDAI
SDAO
ALERT
SENSE
+
GND
SENSE
–
LTC2945
V
CC
GND
R7
0.51k
R3
0.51k
R12
100Ω
R4
1k
FGND
FGND
C2
1µF
R8
0.51k
R9
1k
R10
1k
R11
10k
3.3V
3.3V
R
SNS
0.02Ω
V
DD
GND
µP
SCL
SDA
INT
T1
SMAJ70A
DIODES, INC
Q1
PZTA42
R1
1k
R5
1Ω
M1
BSP149
R2
1k
2945 TA09a
1µF
3.3V
10k 10k
V
IN
0V TO 80V
V
OUT
R
SNS
0.02Ω
V
ADIN
V
CC
V
L
ON
GND
DI1
SDA
SCL
DNC
DO2
DO1
GND
V
DD
INTV
CC
ADR0
ADR1
ADIN
ALERT
SDAO
SDAI
SCL
SENSE
+
GND
SCL2
SDA2
O1
AV
–
AV
+
V
–
V
+
AV
CC2
V
CC2
I2
DNC
I1
GND2
SENSE
–
LTC2945
LTM2883-3I
SCL
INT
SDA
V
CC
GND
µP
C2
0.1µF
R2
10k