lt3650-4.1 Linear Technology Corporation, lt3650-4.1 Datasheet - Page 18

• Manufacturer Part Number: lt3650-4.1
• Description: High Voltage 2 Amp Monolithic Li-ion Battery Charger
• Manufacturer: Linear Technology Corporation

LT3650-4.1/LT3650-4.2
TYPICAL APPLICATIONS
12V TO
18
32V
V
IN
NTC Range Is Extended to +45C. The Charger Can Supply Loads Up
Removable Battery Pack. The RNG/SS Pin Is Used to Reduce the
Maximum Charger Current if 12V < V
12V to 32V 2A Charger with Three Hour EOC Termination and
to the Maximum Charger Current with No Battery Connected.
36k
3k
MM5Z9V1ST1
(9.1V)
INPUT SUPPLY
5V TO 32V
10μF
0.1μF
BZX84C6V2L
(6.2V)
SHDN
CHRG
FAULT
10k
CLP
RNG/SS
V
5V to 32V 1.5A Charger with Three Hour EOC Termination. The LTC1515 Provides
IN
2N3904
LT3650
Boost Start-Up Requirement. Status Pins Use LED Indicators.
BOOST
SENSE
TIMER
NTC
BAT
10μF
SW
10μF
100k
10k
IN
< 20V; Input UVLO = 10V.
CMPSH1-4
10μF
0.68μF
0.68μF
1μF
0.91k
100k
20k
+
5.1k
5.1k
100μF
SHDN
POR
FB
GND
SHDN
CHRG
FAULT
TIMER
CLP
V
B = 3380
10k
IN
LTC1515
365042 TA03a
+
LT3650
CMSH3-40MA
0.05Ω
6.8μH
V
OUT
C1
C1
SYSTEM
LOAD
V
IN
RNG/SS
+
–
BOOST
SENSE
BAT
NTC
SW
0.1μF
1N4148
10μF
1μF
0.1μF
10μF
2.0
1.5
1.0
0.5
0
10
1k
B = 3380
10k
1N4148
RNG/SS Pin Foldback:
12
I
CHG(MAX)
14
365042 TA02
+
16
0.068Ω
10μH
B240A
V
vs V
IN
18
IN
20
22
365042 TA03b
36504142fb
32