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| LTC3878_15 Datasheet, PDF (21/26 Pages) Linear Technology – Fast, Wide Operating Range No RSENSE Step-Down DC/DC Controller | |||
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Typical Applications
4.5V to 32V Input, 1V/5A Output at 250kHz
LTC3878
CSS
0.1µF
1 RUN/SS BOOST 16
RPG
100k
2
LTC3878
PGOOD
TG 15
DB
ZLLS1000
CB
0.22µF
RC
13k
CC1
1000pF
3 VRNG
4 FCB
5 ITH
CC2
100pF
6 SGND
SW 14
PGND 13
BG 12
INTVCC 11
CVCC
4.7µF
RFB1
10.0k
RFB2 RON
2.55k 576k
7 ION
8 VFB
VIN 10
NC 9
CF
RF
0.1µF 2.2Ω
CIN1
4.7µF
50V
M1
BSC093N04LS
L1
2.2µH
+ CIN2
22µF
35V
M2
COUT1 +
BSC093N04LS 330µF
2.5V
COUT2
47µF
6.3V
VIN
4.5V TO 32V
VOUT
1V
5A
CIN1: MURATA GRM32ER71H475K
COUT1: SANYO 2R5TPE330M9
COUT2: TDK C3216X5R0J476M
L1: WURTH 744311220
3878 TA04
4.5V to 28V Input, 2.5V/5A Output at 500kHz
CSS
0.1µF
R1 R2
10.0k 80.6k
CC1
1000pF RC
8.2k
RFB1
10.0k
RFB2
21.5k
1 RUN/SS BOOST 16
RPG
100k
2
LTC3878
PGOOD
TG 15
DB
CMDSH-3
CB
0.22µF
3 VRNG
4 FCB
5 ITH
CC2
100pF
6 SGND
SW 14
PGND 13
BG 12
INTVCC 11
CVCC
4.7µF
7 ION
8 VFB
RON
715k
VIN 10
NC 9
CF RF
0.1µF 2.2Ω
CIN1
4.7µF
50V
M1-1
1/2 Si4816BDY
L1
2.2µH
M1-2
1/2 Si4816BDY
+ CIN2
22µF
35V
COUT
100µF
6.3V
s2
VIN
4.5V TO 28V
VOUT
2.5V
5A
CIN1: MURATA GRM32ER71H475K
COUT: MURATA GRM32ER60J107M
L1: WURTH 744311220
3878 TA05
3878fa
21
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