LTC3878 Linear Technology Corporation, LTC3878 Datasheet - Page 20

• Manufacturer Part Number: LTC3878
• Description: Wide Operating Range No RSENSE Step-Down Controller
• Manufacturer: Linear Technology Corporation

www.datasheet4u.com
LTC3878
TYPICAL APPLICATIONS
20
10.0k
R
FB1
1000pF
10.0k
10.0k
10.0k
R
R1
C
R1
FB1
330pF
C1
C
R
5.11k
0.1μF
0.1μF
C1
C
FB2
C
SS
SS
R
12.7k
95.3k
57.6k
10k
FB2
R2
R
R2
18k
R
C
C
511k
R
ON
C
100pF
100k
R
100k
C
100pF
C2
R
C2
PG
PG
R
576k
1
2
3
4
5
6
7
8
ON
1
2
3
4
5
6
7
8
RUN/SS
PGOOD
V
MODE
I
SGND
I
V
RUN/SS
PGOOD
V
MODE
I
SGND
I
V
TH
ON
TH
ON
RNG
FB
RNG
FB
LTC3878
LTC3878
BOOST
BOOST
PGND
INV
INV
4.5V to 14V Input, 1.2V/20A Output at 300kHz
PGND
4.5V to 24V Input, 1.8V/10A Output at 500kHz
SW
V
SW
TG
BG
NC
V
BG
NC
CC
TG
IN
CC
IN
16
15
14
13
12
11
10
9
16
15
14
13
12
11
10
9
4.7μF
C
4.7μF
C
VCC
VCC
C
0.22μF
C
0.22μF
B
B
CMDSH-3
CMDSH-3
C
0.1μF
C
0.1μF
D
D
F
F
B
B
2.2Ω
R
1Ω
R
F
F
C
C
C
L1: SUMIDA CDEP105NP-0R8MC-50
C
C
C
L1: PULSE PA0513.441NLT
IN1
OUT1
OUT2
IN1
OUT1
OUT2
: TDK C3225X5R1E106MT
M1
FDS8690
M2
FDS8670
M1
RJK0305DPB
M2
RJK0330DPB
: TDK C3225X5R1C106MT 2
: SANYO 2R5TPE330M9
: MURATA GRM31CR60J107ME39
: SANYO 2R5TPE330M9 3
: MURATA GRM31CR60J107ME39 2
C
330μF
0.8μH
10μF
OUT1
C
2.5V
L1
25V
IN1
0.44μH
C
330μF
10μF
OUT1
+
2.5V
C
L1
16V
IN1
2
3
+
+
+
C
100μF
6.3V
C
56μF
25V
OUT2
IN2
C
100μF
6.3V
C
180μF
16V
OUT2
2
IN2
3878 TA03
V
4.5V TO 24V
V
1.8V
10A
3878 TA02
IN
OUT
V
4.5V TO 14V
V
1.2V
20A
IN
OUT
3878f