Datasheet

LTC2960
13
2960f
TYPICAL APPLICATIONS
Figure 10. Battery Disconnect to Protect Against Deep Discharge
Figure 9. Configurable Regulator UVLO and Supervisor
Figure 11. Automotive Supervisor
LTC2960-1
LT3991
V
IN
V
CC
GND
V
OUT
EN
IN
+
RT
GND
MR
ADJ
RST
OUT
R2
6.04M
Li-Ion
4.2V
Li-Ion
4.2V
V
BAT
6V TO 8.4V
V
OUT
3.3V
C1
0.1μF
25V
R1
402k
R
ESD
*
10k
RESET
R6
1M
R4
2.26M
R3
402k
R5
10M
2960 F09
UVLO FALLING THRESHOLD = 6.410V
RESET FALLING THRESHOLD = 2.649V
*OPTIONAL RESISTOR FOR ADDED ESD PROTECTION
+
+
C2
47μF
16V
NOT ALL LT3991 COMPONENTS SHOWN
BUCK CONVERTER
LTC2960-2
V
CC
IN
–
RT
GND
MR
ADJ
RST
OUT
R2
5.6M*
Li-Ion
4.2V
Li-Ion
4.2V
V
BAT
6V TO 8.4V
M1
Si4435
M2
Si4435
V
OUT
C1
0.1μF
25V
R1
402k*
LOW BATTERY
R5
10M
R4
6.04M*
R3
402k*
R6
100k
R7
1M
1N5245
15V
2960 F10
IN
–
FALLING THRESHOLD = 5.974V
ADJ FALLING THRESHOLD = 6.410V
+
+
R8
10k
*VISHAY-DALE CRCW SERIES 0603 1 %
LTC2960-3
V
CC
IN
+
GND
MR
OUT
ADJ
RST
DV
CC
R2
825k
R7
1M
V
IN
4V TO 27V
12V
VEHICLE BATTERY
IRLR2908
V
OUT
3.3V
C1
1μF
50V
R1
80.6k
UV
OV
R6
6.04M
R5
1M
R8
102k
R7
4.99k
R4
1.78M
R3
1M
2960 F11
C2
22μF
25V
IN
+
FALLING THRESHOLD = 4.49V
ADJ FALLING THRESHOLD = 2.816V
LT3991
BUCK CONVERTER
V
IN
GND
V
OUT
FBEN/SS
LT4356
V
CC
GND
GATE OUT
FLT
FB
NOT ALL LT3991 COMPONENTS SHOWN