Datasheet

LTC2952
25
2952fb
LTC2952
μP
LTC1625
RUN/SS**
V
OUT
V
IN
PFI
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
1.78M
*OPTIONAL
**RUN/SS INTERNALLY PULLED UP BY THE LTC1625
2952 TA04
R4
100k
Si7941DP
WALL ADAPTER
5V TO 30V 3.3V
Q2
Si7421DN
Q1
S1
Q3
5V TO 30V
BATTERY
R9
845k
R10
100k
R1
511k
R2
100k
R5
10k
R8
10k
R7
10k
R6
10k
CVS
0.1μF
TYPICAL APPLICATIONS
Uninterruptible Power Supply with Preferential Wall Adapter Operation and Automatic Load
Switchover to Battery with Pushbutton Control, Voltage Monitors and Watchdog
Direct PowerPath Control with Pushbutton Control, Voltage Monitors and Watchdog
LTC2952
μP
G1
VM
RST
INT
G1STAT
PFO
KILL
WDE
G2
V1
V2
M1
M2
PFI
PB
EN
S1
Q1 Q3
VS
ONT
C
ONT
*
22nF
GND OFFT
C
OFFT
*
68nF
R11
1k
*OPTIONAL
2952 TA05
WALL ADAPTER
5V
Si7925DN
R1
511k
R2
100k
R5
10k
R8
10k
R7
10k
R6
10k
4.2V
SINGLE
CELL
Li-Ion
BATTERY
D4
POWER ON/OFF
INDICATOR
R3
845k
R4
100k
Q4
Si7925DN
Q2
CVS
0.1μF