LTC3708 LINER [Linear Technology], LTC3708 Datasheet - Page 32

• Manufacturer Part Number: LTC3708
• Description: Fast 2-Phase, No RSENSE Buck Controller with Output Tracking
• Manufacturer: LINER [Linear Technology]

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