LTC3709 Linear Technology, LTC3709 Datasheet - Page 24

• Manufacturer Part Number: LTC3709
• Description: No RSENSE Synchronous DC/DC Controller
• Manufacturer: Linear Technology

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LTC3709
TYPICAL APPLICATIO
RELATED PARTS
PART NUMBER
LTC1708
LTC1778
LTC3413
LTC3708
LTC3728
LTC3729
LTC3730/LTC3731 3-Phase to 12-Phase Synchronous Step-Down Controllers
LTC3732
LTC3778
PolyPhase is a registered trademark of Linear Technology Corporation.
24
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
220pF
R
100nF
F2
C
10k
C
0.22µF
1nF
C
DESCRIPTION
Fast 2-Phase Dual Output Step-Down Controller
Wide Operating Range, No R
DDR, QDR Memory Termination Regulator
Fast, Dual No R
Dual, 550kHz, 2-Phase Synchronous Step-Down Switching Regulator
550kHz, PolyPhase
Switching Regulator
Wide Operating Range, No R
SS
C
B2
470pF
3.32k
0.1µF
R
F1
R
●
190k
C
FAX: [phone]
20k
5V
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
SENSE
RUN/SS
I
V
TRACK
SGND
SGND
V
DIFFOUT
V
EXTLPF
INTLPF
NC
BOOST2
TG2
SW2
SENSE2
TH
FB
OS
OS
®
, High Efficiency, Synchronous Step-Down
–
+
, 2-Phase Synchronous Step-Down Controller
LTC3709
U
100pF
+
SENSE1
SENSE1
SENSE2
BOOST1
PGOOD
PGND1
PGND2
DRV
SENSE
SENSE
●
V
SW1
Low Output Ripple, 2-Phase 12V/30A Supply
TG1
BG1
BG2
RNG
FCB
V
www.linear.com
I
ON
CC
CC
+
–
–
Step-Down Controller
Step-Down Controller
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
R
PGOOD
100pF
C
B1
1µF
1µF
10Ω
100k
0.22µF
1µF
D
B1
CMDSH-3
R
CMDSH-3
ON
10nF
2.86M
D
B2
21.5k
DRV
5V
10k
CC
V
24V
COMMENTS
PLL, V
Single Channel, GN16 Package
±3A Output Current, 90% Efficiency
Very Fast Transient Response; Very Low Duty Factor
Tracking; Minimum C
Fixed Frequency, Dual Output
Fixed Frequency, Single Output, Up to 12-Phase
Operation
40A to 240A, 4.5V ≤ V
Single Channel, Separate V
IN
M1
M3
C
35V ×3
IN
10µF
IN
up to 36V, Tracking
M1-M4: RENESAS HAT2167
C
OUT
M4
M2
: OS-CON 16SVP150M
© LINEAR TECHNOLOGY CORPORATION 2004
IN
B340A
IN
D1
B340A
, C
D2
≤ 32V, 0.6V ≤ V
OUT
ON
16V ×3
150µF
C
4.7µH
OUT
Programming
LT/TP 1104 1K • PRINTED IN USA
L2
L1
4.7µH
TOKO
FDA1254
V
OUT
OUT
3709 TA02
≤ 5V
3709f