LTC3703IGN Datasheet, PDF (30/34 Pages) Linear Integrated Systems – 100V Synchronous Switching Regulator

LTC3703
Typical Applications
36V-72V Input Voltage to 5V/10A Step-Down Converter with Pulse Skip Mode Enabled
C_C2
1000pF
R_C1
10k
R2
21.5k
1%
R_C2
100Ω
C_C3
2200pF
R1
113k
1%
V_CC
9.3V TO 15V
1
16
R_SET ^{MODE/SYNC VIN}
25k ₂
f_SET
15
BOOST
3
LTC3703
14
C_C1
COMP
TG
470pF
4
FB
13
SW
R_MAX 20k ₅
I_MAX
12
V_CC
C_SS
0.1µF
6
INV
7
RUN/SS
11
DRV_CC
10
BG
8
GND
9
BGRTN
+ _22µF
25V
R_F 10Ω
C_DRVCC
10µF
V_IN
36V TO 72V
D_B
BAS19
C_B
0.1µF
+
C_IN
68µF
100V
M1
×2
Si7852DP
L1
4.7µH
C_VCC
1µF
M2
Si7852DP
C_{OUT +}
270µF
10V
×2
D1
MBR1100
V_OUT
5V
10A
3703 TA01
Single Input Supply 12V/5A Output Step-Down Converter
FZT600
100Ω
10k *
12V
V_IN
15V TO 80V
C_C2
1000pF
R_C1
10k
R2
8.06k
1%
R_C2
100Ω
C_C3
2200pF
R1
113k
1%
R_SET 25k
C_C1
470pF
R_MAX 12k
C_SS
0.1µF
1
16
MODE/SYNC V_IN
2
15
f_SET
BOOST
3
LTC3703
14
COMP
TG
4
FB
13
SW
5
I_MAX
6
INV
7
RUN/SS
12
V_CC
11
DRV_CC
10
BG
8
GND
9
BGRTN
+ _22µF
25V
D_B
BAS19
C_B
0.1µF
R_F 10Ω
C_DRVCC
10µF
C_VCC
1µF
+
M1
Si7852DP
L1
8µH
C_IN
68µF
100V
M2
Si7852DP
C_OUT +
270µF
16V
D1
MBR1100
CMDSH-3
V_OUT
12V
5A
*OPTIONAL ZENER PROVIDES UNDERVOLTAGE LOCKOUT ON INPUT SUPPLY, V_UVLO ≅ 10 + V_Z
3703 TA02
3703fc
30