Datasheet

LT3763
25
3763fa
For more information www.linear.com/LT3763
3.3A, Six-Cell (36V) SLA Battery Charger
C
IN2
47µF
V
IN
48V
R
SENSE_IN
15mΩ
R
FILTA
1k
R
FILTB
1k
R
T
82.5k
EN/UVLOENABLE
FBIN
TG
V
IN
BOOST
V
REF
CTRL1
CTRL2
LT3763
SW
BG
GND
V
C
SENSE
+
SENSE
–
INTV
CC
INTV
CC
C
BOOST
220nF
L1
12µH
C
VCC
22µF
C
OUT
10µF
R
S
15mΩ
FB
FAULT
R
C
8.06k
C
C
4.7nF
R
FB1
402k
R
FB3
178k
12V
L1: WÜRTH 74471112
M1, M2: INFINEON BSC100N06LS3
M3: VISHAY VN2222LL
R
S
: VISHAY WSL2512R0150
3763 TA04
R
FB2
12.1k
C
REF
2.2µF
M1
M2
M3
PWMOUT
V
OUT
45V, 3.3A MAXIMUM
PWM
SYNC
SS
C
SS
10nF
RT
C
S
33nF
R
SA
10Ω
R
SB
10Ω
R
FAULT
47.5kΩ
C
FILT
1µF
+
12V
+
12V
+
C
IN1
1µF
IVINNIVINP
IVINMON
ISMON
Typical applicaTions
36V SLA Battery Charging
FAULT
10V/DIV
V
OUT
50mV/DIV
AC-COUPLED
I
L
2A/DIV
50s/DIV
3763 TA04b