Datasheet

LT3763
26
3763fa
For more information www.linear.com/LT3763
Typical applicaTions
20A, Synchronized, 5V Regulator
C
IN2
100µF
V
IN
7V TO 30V
R
SENSE_IN
2.5mΩ
R
FILTA
1k
R
FILTB
1k
R
T
121k
EN/UVLO
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
1.5µH
C
VCC
22µF
R
S
2.5mΩ
FB
FAULT
R
C
59k
C
C
4.7nF
R
FB1
38.3k
L1: COILCRAFT XAL1010-152
M1: RENESAS RJK0365
M2: RENESAS RJK0453
R
S
: VISHAY WSL25122L500FEA
3763 TA05
R
FB2
12.1k
C
REF
2.2µF
R
NTC
470k
M1
M2
PWMOUT
V
OUT
5V, 20A MAXIMUM
C
OUT
220µF
×2
PWM
SYNC
SS
C
SS
10nF
RT
R
HOT
45.3k
C
S
33nF
R
SA
10Ω
R
SB
10Ω
R
FAULT
47.5kΩ
C
FILT
1µF
3V
0V
500kHz
C
IN1
4.7µF
IVINNIVINP
IVINMON
ISMON
R
EN1
44.2k
R
EN2
15.4k
Output Voltage Load Regulation Efficiency vs Load Current
I
LOAD
(A)
0
EFFICIENCY (%)
100
90
80
95
85
18
3763 TA05c
24
126
V
IN
= 12V
V
OUT
= 5V
I
LOAD
(A)
0
0
V
OUT
(V)
2
4
6
8
6 12 18
3763 TA05b
24
V
IN
= 12V
V
OUT
= 5V
I
LIMIT
= 20A