LTC3737 Datasheet, PDF (21/24 Pages) Linear Technology – Dual 2-Phase, No RSENSE DC/DC Controller with Output Tracking

APPLICATIO S I FOR ATIO
LTC3737
187k
118k
59k
59k
59k
118k
100pF
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
1µF
10Ω
1M
3
PLLLPF
4
SGND
5
V_IN
9
PGOOD
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
C_SS
10nF
L1
1.5µH
C1 ⁺
150µF
C2
150µF
L2
1.5µH
V_IN
5V
V_OUT1
2.5V
5A
C3
22µF
×2
V_OUT2
1.8V
5A
100pF
3737 F13
C1, C2: SANYO 4TPB150MC
L1, L2: VISHAY IHLP-2525CZ-01-1.5
C3: TAIYO YUDEN LMK325BJ106K-T M1, M2: FDC602P
D1, D2: SBM540
Figure 13. 2-Phase, 550kHz, Dual Output Step-Down DC/DC Converter
TYPICAL APPLICATIO S
2-Phase, 750kHz, Burst Mode Dual Output Step-Down DC/DC Converter
187k
118k
59k
59k
59k
118k
100pF
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
1µF
10Ω
1M
3
PLLLPF
4
SGND
5
V_IN
9
PGOOD
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
5V
V_OUT1
2.5V
3A
C3
10µF
×2
V_OUT2
1.8V
3A
100pF
3737 TA01
C1, C2: SANYO 6TPA47M
L1, L2: COILCRAFT D03316P-22
C3: TAIYO YUDEN LMK325BJ106K-T M1, M2: Si9803DY
D1, D2: IR 10BQ015
3737f
21