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| LTC3878_15 Datasheet, PDF (20/26 Pages) Linear Technology – Fast, Wide Operating Range No RSENSE Step-Down DC/DC Controller | |||
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LTC3878
Typical Applications
4.5V to 14V Input, 1.2V/20A Output at 300kHz
CSS
0.1µF
R1 R2
10.0k 57.6k
CC1
330pF
RC
18k
RFB1
10.0k
RFB2
5.11k
1 RUN/SS BOOST 16
RPG
100k
2
LTC3878
PGOOD
TG 15
3 VRNG
4 FCB
SW 14
PGND 13
DB
CMDSH-3
CB
0.22µF
5 ITH
CC2
100pF
6 SGND
7 ION
8 VFB
RON
576k
BG 12
INTVCC 11
CVCC
4.7µF
VIN 10
NC 9
CF
RF
0.1µF 1Ω
CIN1
10µF
16V
s2
M1
RJK0305DPB
L1
0.44µH
COUT1 +
330µF
2.5V
M2
s3
RJK0330DPB
+ CIN2
180µF
16V
COUT2
100µF
6.3V
s2
VIN
4.5V TO 14V
VOUT
1.2V
20A
CIN1: TDK C3225X5R1C106MT s2
COUT1: SANYO 2R5TPE330M9 s3
COUT2: MURATA GRM31CR60J107ME39 s2
L1: PULSE PA0513.441NLT
3878 TA02
4.5V to 24V Input, 1.8V/10A Output at 500kHz
CSS
0.1µF
R1 R2
10.0k 95.3k
1 RUN/SS BOOST 16
RPG
100k
2
LTC3878
PGOOD
TG 15
DB
CMDSH-3
CB
0.22µF
CC1
1000pF RC
10k
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
12.7k 511k
7 ION
8 VFB
VIN 10
NC 9
CF RF
0.1µF 2.2Ω
CIN1
10µF
25V
M1
FDS8690
L1
0.8µH
+ CIN2
56µF
25V
M2
FDS8670
COUT1
330µF
2.5V
+
COUT2
100µF
6.3V
VIN
4.5V TO 24V
VOUT
1.8V
10A
CIN1: TDK C3225X5R1E106MT
COUT1: SANYO 2R5TPE330M9
COUT2: MURATA GRM31CR60J107ME39
L1: SUMIDA CDEP105NP-0R8MC-50
3878 TA03
3878fa
20
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