Datasheet

LTC2952
26
2952fb
TYPICAL APPLICATIONS
Critical System with Primary Supply and Temporary Battery Backup with
Pushbutton Control, Voltage Monitors and Watchdog
LTC2952
μP
LTC3728
RUN/SS**
V
OUT
V
IN
PFI
S1
G1
VM
RST
INT
G1STAT
PFO
KILL
WDE
G2
V1
V2
M1
M2
PB
EN
VS
ONT
C
ONT
*
22nF
GND OFFT
C
OFFT
*
68nF
R3
1.82M
*OPTIONAL
**RUN/SS INTERNALLY PULLED UP BY THE LTC3728
2952 TA06
R4
100k
Q1
SUB75P03-07
PRIMARY POWER
12V TO 30V 3.3V
Q2
SUB75P03-07
12V BATTERY
C2
0.1nF
R9
2.15M
R10
100k
R1
511k
R2
100k
R5
10k
R8
10k
R7
10k
R6
10k