Datasheet

LTC3708
32
3708fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
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FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2006
LT 1207 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
Area = 650mm
2
, Height = 3mm
V
CC
5V
5V
TRACK1
BOOST2
BAT54A
BOOST1
LTC3708EUH
TG1
V
RNG1
I
ON1
EXTLPF
I
TH1
V
FB1
TRACK2
BOOST1
1M
100k
1000pF
1000pF
SENSE1
+
SENSE1
–
RUN/SS SGNDSGND
PGND1
BG1
FCB DRV
CC
SW1
TG2
V
CC
V
RNG2
I
ON2
INTLPF
I
TH2
V
FB2
PGOOD
BOOST2
SENSE2
+
SENSE2
–
PGND2
BG2
SW2
0.1μF
0.1μF
Q1A
Si4816BDY
Q1B
Si4816BDY
V
IN
750k
100k
V
IN
V
CC
V
CC
Q2A
Si4816BDY
Q2B
Si4816BDY
L2
1.8μH
C11
10μF
25V
C1
150μF
4V
C16
100μF
6.3V
L1
1.8μH
1μF
10Ω
C9
10μF
25V
560pF 560pF
20k
15k
20k
20k
10k
20k
100k
5V
220pF
150pF
150pF
0.1μF
V
IN
BAT54W
220pF
5.11k
22nF
3708 TA06
470pF 220pF
220pF
31.6k
20k
10k
10k
+
V
OUT1
2.5V
5A
V
IN
7V TO 24V
SGND
RUN/SS
1μF
1μF
BOOST2
2.2μF
6.3V
C13
150μF
4V
+
PGOOD
V
OUT2
1.8V
5A
C15
100μF
6.3V
C1, C13: SANYO 4TPE150MAZB
C9, C11: TAIYO YUDEN TMK325BJ106KM
C15, C16: TDK C3225X5R0J107M
L1, L2: TOKO FDV0630-1R8M
PART NUMBER DESCRIPTION COMMENTS
LTC1778 Wide Operating Range, No R
SENSE
Step-Down Controller Single Channel, GN16 Package
LTC3709 2-Phase, No R
SENSE
Step-Down Controller with Tracking/Sequencing Single Output, Remote Sensing
LTC3728 Dual, 550kHz, 2-Phase Synchronous Step-Down Switching Regulator Fixed Frequency, Dual Output
LTC3729 550kHz, PolyPhase
®
, High Effi ciency, Synchronous Step-Down
Switching Regulator
Fixed Frequency, Single Output, Up to 12-Phase Operation
LTC3731 3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller 3-Phase, Single Output
LTC3778 Wide Operating Range, No R
SENSE
Step-Down Controller Single Channel, Separate V
ON
Programming
PolyPhase is a registered trademark of Linear Technology Corporation