Datasheet

LT3650-4.1/LT3650-4.2
18
36504142fc
Typical applicaTions
5V to 32V 1.5A Charger with Three Hour EOC Termination. The LTC1515 Provides
Boost Start-Up Requirement. Status Pins Use LED Indicators
12V to 32V 2A Charger with Three Hour EOC Termination and
Removable Battery Pack. The RNG/SS Pin Is Used to Reduce the
Maximum Charger Current if 12V < V
IN
< 20V; Input UVLO = 10V.
NTC Range Is Extended to +45C. The Charger Can Supply Loads Up
to the Maximum Charger Current with No Battery Connected
365042 TA03a
SW
V
IN
V
IN
12V TO
32V
CLP
RNG/SS
BOOST
SENSE
BAT
NTC
TIMER
CMPSH1-4
MM5Z9V1ST1
(9.1V)
1µF
6.8µH
0.05Ω
SYSTEM
LOAD
LT3650
10µF
36k
3k
0.68µF
0.91k
SHDN
CHRG
FAULT
0.1µF
CMSH3-40MA
10µF
100µF
B = 3380
10k
+
+
365042 TA03b
0.5
0
10 1412 16
V
IN
18 2220 32
2.0
1.5
1.0
MAXIMUM CHARGE CURRENT (A)
RNG/SS Pin Foldback:
I
CHG(MAX)
vs V
IN
365042 TA02
SW
V
IN
V
OUT
C1
+
C1
–
V
IN
CLP
RNG/SS
BOOST
SENSE
BAT
NTC
TIMER
1N4148
0.068Ω
1N4148
2N3904
B240A
INPUT SUPPLY
5V TO 32V
1µF
10µF
20k
10µF
100k
10µH
0.1µF
LT3650
1k
SHDN
CHRG
FAULT
GND
0.1µF
LTC1515
SHDN
POR
FB
5.1k
10µF
+
0.68µF
10µF
B = 3380
10k
100k
5.1k
BZX84C6V2L
(6.2V)
10k10k