LTC3707 Datasheet, PDF (32/32 Pages) Linear Technology – High Effi ciency, 2-Phase Synchronous Step-Down Switching Regulator

LTC3707
TYPICAL APPLICATION
0.1μF
27pF
105k
1000pF
1%
20k
1%
INTV_CC
33pF
0.01μF
15k
220pF
33pF
3.3V
15k
220pF
20k
1%
63.4k
1000pF
27pF
1%
1
RUN/SS1
28
PGOOD
2 _SENSE1+
27
TG1
3 _SENSE1–
26
SW1
4
V_OSENSE1
5
FREQSET
6
STBYMD
25
BOOST1
24
V_IN
23
BG1
7
FCB
8
I_TH1
22
EXTV_CC
LTC3707
21
INTV_CC
9
SGND
20
PGND
10
3.3V_OUT
11
I_TH2
12
V_OSENSE2
13 _SENSE2–
19
BG2
18
BOOST2
17
SW2
16
TG2
14 _SENSE2+
15
RUN/SS2
V_PULL-UP
(<7V)
PGOOD
L1
8μH
0.015Ω
0.1μF
M1A
M1B
CMDSH-3TR
1μF
10V
4.7μF
CMDSH-3TR
10Ω
0.1μF
47μF 6.3V
22μF
50V
56μF, 4V
0.1μF
M2A
M2B
L2
0.015Ω
8μH
V_OUT1
5V
3A; 4A PEAK
GND
V_IN
5.2V TO
28V
V_OUT2
3.3V
3A; 4A PEAK
0.1μF
V_IN: 5.2V TO 28V
V_OUT: 5V, 4A/3.3V, 4A
SWITCHING FREQUENCY = 300kHz
MI, M2: FDS6982S
L1, L2: 8mH SUMIDA CEP1238R0MC
OUTPUT CAPACITORS: PANASONIC SP SERIES
3707 F13
Figure 13. LTC3707 5V/4A, 3.3V/4A Regulator
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DESCRIPTION
COMMENTS
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Output Fault Protection, 16-Pin SSOP
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Adaptive Power, No RSENSE and PolyPhase are trademarks of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
3707fb
32 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
LT 0508 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001