Datasheet

LTC3852
30
3852f
TYPICAL APPLICATIONS
V
IN
= 7V
V
OUT
= 5V
INTV
CC
5V
2V/DIV
10ms
3852 F17a
INTV
CC
During Line Transient
(V
IN1
< 5V)
C8
2200pF
R9
3.6k
C5
0.1µF
2.2µF
10V
0603
C1
R5
82.5k
1%
R16
100k
C9
150pF
C11
0.1µF
INTV
CC
PGOOD
+
V
IN
4V TO 36V
C
IN1
56µF
50V
L1
3.6µH
C
IN5
3.3µF ×4
50V
C1
4.7µF
10V
C
OUT1
47µF
10V
C
OUT2
220µF
6.3V
V
OUT
5V/10A
(V
IN
> 5V)
Q1
Q2
2N3904
D1
D3
BAT85
Q3
C15
4.7µF
10V
C6
0.1µF
C12
1000pF
RS1
0.003
1%
+
GND
R11
100
R1
1k
D2
4.7V
R20
42.2k
1%
R19
8.06k
1%
R12
100
GND1 GND2
FB
BG
BOOST
SW
TG
INTV
CC
V
IN2
V
IN1
V
PUMP
SENSE
–
SENSE
+
C
–
C
+
MODE/
PLLIN
FREQ/
PLLFLTR
RUN
TRACK/SS
PGOOD
SHDN
I
TH
GND
3V
0V
LTC3852
3852 F18
ONOFF
C
IN1
: SUNCON 50HVP56M
C
IN5
: TDK C3225X7R1H335
C
OUT1
: TDK C3225X5ROJ476
C
OUT2
: SANYO 6TPE220MI
D1: CENTRAL SEMI CMDSH-3
L1: COILTRONICS HC1-3R6-R
Q1: RENESAS RJK0451DPB
Q3: RENESAS RJKO453DPB
JP2
MODE
1
2
3
4
INTV
CC
100k
CCM
BURST
PS
Figure 17. 5V/10A Converter Providing 5V Drive to MOSFETs for 4V < V
IN
< 36V