LTC3850-2_15 Datasheet, PDF (30/36 Pages) Linear Technology – Dual, 2-Phase Synchronous Step-Down Switching Controller

LTC3850-2
TYPICAL APPLICATIONS
2.2Ω
1μF
V_IN
22μF
50V
7V TO
24V
M1
L2
2.2μH
4.7μF
0.1μF
6mΩ
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 ^LTC3850-2 BG2
MODE/PLLIN
PGND
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
6mΩ
10pF
100pF
105k
1%
20k ⁺
1%
38502 F16
V_OUT2
5V
5A
C_OUT2
150μF
Figure 16. 3.3V/5A, 5V/5A Converter Using Sense Resistors
38502f
30