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