LTC3879_15 Datasheet, PDF (24/28 Pages) Linear Technology – Fast, Wide Operating Range No RSENSE Step-Down Controller

LTC3879
TYPICAL APPLICATIONS
4.5V to 28V Input, 2.5V/5A Output at 500kHz
C_SS
0.1μF
R1 R2
10.0k 80.6k
C_C1
1000pF ^RC
10k
R_FB1
10.0k
R_FB2
32.4k
1 _{TRACK/SS BOOST} 16
R_PG
100k
2
LTC3879
PGOOD
TG ¹⁵
D_B
CMDSH-3
C_B
0.22μF
3 _VRNG
4 _MODE
5 _ITH
C_C2
100pF
6 _SGND
SW ¹⁴
PGND ¹³
BG ¹²
INV_CC ¹¹
C_VCC
4.7μF
7 _ION
8 _VFB
R_ON
715k
V_IN ¹⁰
RUN ⁹
C_F R_F
0.1μF 2.2Ω
C_IN1
4.7μF
50V
M1-1
1/2 Si4816BDY ^L1
2.2μH
M1-2
1/2 Si4816BDY
+ C_IN2
22μF
35V
C_OUT
100μF
6.3V
s2
V_IN
4.5V TO 28V
V_OUT
2.5V
5A
C_IN1: MURATA GRM32ER71H475K
C_OUT: MURATA GRM32ER60J107M s2
L1: WURTH 744311220
3879 TA05
13V to 32V Input, 12V/5A Output at 300kHz
C_SS
0.1μF
1 _{TRACK/SS BOOST} 16
R_PG
100k
2
LTC3879
PGOOD
TG ¹⁵
D_B
ZLLS1000
C_B
0.22μF
C_C1
1000pF ^RC
24.9k
3 _VRNG
4 _MODE
5 _ITH
C_C2
100pF
6 _SGND
SW ¹⁴
PGND ¹³
BG ¹²
INV_CC ¹¹
C_VCC
4.7μF
R_FB1
10.0k
R_FB2 R_ON
191k 2.7M
7 _ION
8 _VFB
V_IN ¹⁰
RUN ⁹
2.7M
C_F R_F
0.1μF 2.2Ω
C_IN1
4.7μF
50V
+ C_IN2
22μF
35V
M1
BSC093N04LS ^L1
10μH
M2
BSC093N04LS
+ C_OUT1
82μF
16V
V_IN
13V TO 32V
V_OUT
12V
5A
C_IN1: MURATA GRM32ER71H475K
C_OUT1: SANYO 16SVPA82MAA
L1: IHLP5050FD01 10μH
3879 TA06
3879f
24