LTC3728LCGN-PBF Datasheet, PDF (33/38 Pages) Linear Technology – Dual, 550kHz, 2-Phase Synchronous Regulators

Typical Applications
59k
0.1µF
180pF
20k
1%
105k, 1%
1000pF
33pF
15k _1000pF
33pF
3.3V
15k
20k
1%
180pF
1000pF
63.4k
1%
1000pF
RUN/SS1
PGOOD
SENSE1⁺
TG1
SENSE1^–
SW1
V_OSENSE1
PLLFLTR
BOOST1
V_IN
PLLIN
BG1
FCB
EXTV_CC
LTC3728L/LTC3728LX
I_TH1
INTV_CC
SGND
PGND
3.3V_OUT
I_TH2
V_OSENSE2
SENSE2^–
BG2
BOOST2
SW2
TG2
SENSE2⁺
RUN/SS2
LTC3728L/LTC3728LX
1M
100k
V_PULL-UP
(<7V)
PGOOD
0.1µF
CMDSH-3TR
1µF
10V
4.7µF
CMDSH-3TR
0.1µF
MBRS1100T3
T1, 1:1.8
10µH
M1
Q1
Q2
10Ω
22µF
50V
0.1µF
+
33µF
25V
0.015Ω
D1
150µF, 6.3V
PANASONIC SP
8
LT1121
V_OUT1
5V
3A; 4A PEAK
5
ON/OFF
32
1
220k
V_OUT3
12V
120mA
+
100k
1µF
25V
GND
M2
Q3
180µF, 4V
PANASONIC SP
Q4
D2
V_IN
7V TO
28V
L1
6.3µH
0.01Ω
V_OUT2
3.3V
5A; 6A PEAK
0.1µF
V_IN: 7V TO 28V
V_OUT: 5V, 3A/3.3V, 6A/12V, 150mA
SWITCHING FREQUENCY = 250kHz
MI, M2: FDS6982S OR VISHAY Si4810DY
L1: SUMIDA CEP123-6R3MC
T1: 10µH 1:1.8 — DALE LPE6562-A262 GAPPED E-CORE OR BH ELECTRONICS #501-0657 GAPPED TOROID
3728 F12
Figure 12. LTC3728L/LTC3728LX High Efficiency Low Noise 5V/3A, 3.3V/5A, 12V/120mA Regulator
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