LTC3737 Datasheet, PDF (22/24 Pages) Linear Technology – Dual 2-Phase, No RSENSE DC/DC Controller with Output Tracking

LTC3737
TYPICAL APPLICATIO S
2-Phase, Synchronizable Dual Output Step-Down DC/DC Converter
100pF
118k
59k
59k
118k
187k
59k
10nF
220pF
15k
23
2
10k ₃
4
10Ω 1µF
5
1M
9
24 1
V_FB1 I_TH1
IPRG1
IPRG2
PLLLPF
SGND
V_IN
PGOOD
22
21
20 19
SW1 SENSE1⁺ PV_IN1 NC
18
SYNC/MODE
17
PGATE1
LTC3737EUF
16
PGND
15
PGATE2
14
RUN/SS
13
NC
V_FB2 I_TH2 TRACK SW2 SENSE2⁺ PV_IN2
7 8 6 10 11 12
220pF
15k
M1
D1
D2
M2
L1
2.2µH
C1 ⁺
47µF
C2
47µF
L2
2.2µH
V_IN
3.3V
V_OUT1
2.5V
2A
C3
10µF
×2
V_OUT2
1.8V
2A
3737 TA02
100pF
C1, C2: SANYO 6TPA47M
L1, L2: COILCRAFT D03316P-22
C3: TAIYO YUDEN LMK325BJ106K-T M1, M2: Si9803DY
D1, D2: CENTRAL CMSH1-20ML
2-Phase, 550kHz, Single Output Step-Down DC/DC Converter (3.3V_IN to 1.8V_OUT at 8A)
59k
118k
10Ω 1µF
1M
220pF
220pF
15k
24 1 22
21
20 19
V_FB1 I_TH1 SW1 SENSE1⁺ PV_IN1 NC
23
IPRG1
18
SYNC/MODE
2
IPRG2
17
PGATE1
3
PLLLPF
4
SGND
LTC3737EUF
16
PGND
15
PGATE2
5
V_IN
9
PGOOD
14
RUN/SS
13
NC
V_FB2 I_TH2 TRACK SW2 SENSE2⁺ PV_IN2
7 8 6 10 11 12
59k 118k
M1
D1
D2
M2
L1
1.5µH
C1 ⁺
150µF
C2
150µF
L2
1.5µH
C1, C2: SANYO 4TPR150MC
C3: TAIYO YUDEN LMK325BJ106K-T
D1, D2: SBM540
L1, L2: VISHAY IHLP-2525CZ-01-1.5
M1, M2: FDC602P
3737 TA04
V_IN
3.3V
V_OUT
1.8V
8A
C3
10µF
×2
22
3737f