LTC3850_15 Datasheet, PDF (30/38 Pages) Linear Technology – Dual, 2-Phase Synchronous Step-Down Switching Controller

LTC3850/LTC3850-1
TYPICAL APPLICATIONS
2.2Ω
1µF
V_IN
22µF
50V
7V TO
24V
M1
L2
2.2µH
4.7µF
0.1µF
8mΩ
V_OUT1
3.3V
5A
+
15pF
63.4k
1%
C_OUT1
220µF
20k
1%
10Ω
1000pF
10Ω
1000pF
10k 100pF
1%
L1: TDK RLF 7030T-2R2M5R4
L2: TDK ULF10045T-3R3N6R9
C_OUT1: SANYO 4TPE220MF
C_OUT2: SANYO 6TPE150MI
D3
V_IN PGOOD INTV_CC
D4
TG1
TG2
0.1µF
BOOST1
BOOST2
SW1
SW2
BG1 ^LTC3850
BG2
MODE/PLLIN
PGND
I_LIM
FREQ/PLLFLTR
SENSE1⁺
SENSE2⁺
SENSE1^–
SENSE2^–
RUN1
V_FB1
I_TH1
TK/SS1
SGND
RUN2
EXTV_CC
V_FB2
I_TH2
TK/SS2
0.1µF
0.1µF
10k
1%
10Ω
1000pF
10Ω
3.16k
1%
1000pF
15k
1%
M2
L2
3.3µH
8mΩ
10pF
100pF
105k
1%
20k ⁺
1%
38501 F16
Figure 16. 3.3V/5A, 5V/5A Converter Using Sense Resistors
V_OUT2
5V
5A
C_OUT2
150µF
38501fc
30