LTC3736_15 Datasheet, PDF (26/28 Pages) Linear Technology – Dual 2-Phase, No RSENSE, Synchronous Controller with Output Tracking

LTC3736
TYPICAL APPLICATIO
2-Phase, 550kHz, Dual Output Synchronous DC/DC Converter with Different Power Stage Input Supplies
V_IN1
5V
C_IN
10µF
×2
R_FB1A
59k
R_FB1B
187k
C_ITH1A
100pF
C_ITH1
R_ITH1
15k
220pF
R_VIN 10Ω
22
SW1
SENSE1^{+ 21}
MP1
23
24
1
2
3
IPRG1
PGND
V_FB1
BG1
I_TH1 SYNC/FCB
IPRG2
TG1
PLLLPF PGND
20
19
18
17
16
4 _SGND
TG2 ¹⁵
5 ^LTC3736EUF 14
V_IN
RUN/SS
C_ITH2
C_{VIN 220pF}
1µF
C_ITH2B
100pF
R_ITH2
15k
9
7
8
6
PGOOD
V_FB2
I_TH2
TRACK
BG2
PGND
SENSE2⁺
SW2
13
12
11
10
PGND
MP2
C_SS
25
10nF
MN1
Si7540DP
L1
1.5µH
+
V_OUT1
2.5V
5A
C_OUT1
150µF
MN2
Si7540DP
L2
1.5µH
C_OUT2
150µF _VOUT2
1.8V
4A
R_FB2A
59k
R_TRACKA ^RFB2B R_TRACKB
59k ^118k 118k
3736 TA03
V_IN2 V_IN1 ≥ V_IN2 C_OUT1, C_OUT2: SANYO 4TPB150MC
3.3V V_IN2 ≥ 2.5V L1, L2: VISHAY IHLP-2525CZ-01
3736fa
26