参数资料
型号: LTC3709EUH#TRPBF
厂商: Linear Technology
文件页数: 24/24页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 32-QFN
标准包装: 2,500
系列: PolyPhase®
PWM 型: 电流模式
输出数: 1
频率 - 最大: 200kHz
占空比: 90%
电源电压: 5 V ~ 36 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 32-WFQFN 裸露焊盘
包装: 带卷 (TR)
LTC3709
TYPICAL APPLICATIO
Low Output Ripple, 2-Phase 12V/25A Supply
R C 20k
C SS 0.1μF
C C 1nF
220pF
5V
R F2 10k
R F1 191k
100nF
3.32k
470pF
1
2
3
4
5
6
7
8
9
10
11
12
RUN/SS V RNG
I TH FCB
V FB I ON
TRACK PGOOD
SGND BOOST1
SGND TG1
LTC3709
V OS– SW1
DIFFOUT SENSE1 +
V OS+ SENSE1 –
EXTLPF PGND1
INTLPF BG1
NC DRV CC
32
31
30
29
28
27
26
25
24
23
22
21
10nF
R ON 2.86M
R PGOOD 100k
D B1 CMDSH-3
C B1 0.22 μ F
100pF
1 μ F
10k
26.1k
DRV CC
5V
V IN
20V–28V
M1
C IN 10 μ F
35V × 3
M2
D1
B340A
C OUT
180 μ F
16V × 2
L1
3.5 μ H
V OUT
13
BOOST2
BG2
20
C B2
0.22 μ F
14
TG2
PGND2
19
1 μ F
15
16
SW2
SENSE2 +
SENSE2 –
V CC
18
17
10 ?
L2
3.5 μ H
100pF
1 μ F
D B2
CMDSH-3
M3
M4
D2
B340A
M1-M4: RENESAS HAT2167
C OUT : SANYO 16SVP180MX
RELATED PARTS
L1, L2: SUMIDA CDEP147-3R5MC-H
3709 TA02
PART NUMBER
LTC1708
LTC1778
LTC3413
LTC3708
LTC3728
LTC3729
DESCRIPTION
Fast 2-Phase Dual Output Step-Down Controller
Wide Operating Range, No R SENSE Step-Down Controller
DDR, QDR Memory Termination Regulator
Fast, Dual No R SENSE , 2-Phase Synchronous Step-Down Controller
Dual, 550kHz, 2-Phase Synchronous Step-Down Switching Regulator
550kHz, PolyPhase, High Efficiency, Synchronous Step-Down
COMMENTS
PLL, V IN up to 36V, Tracking
Single Channel, GN16 Package
± 3A Output Current, 90% Efficiency
Very Fast Transient Response; Very Low Duty Factor
Tracking; Minimum C IN , C OUT
Fixed Frequency, Dual Output
Fixed Frequency, Single Output, Up to 12-Phase
Switching Regulator
LTC3730/LTC3731 3-Phase to 12-Phase Synchronous Step-Down Controllers
LTC3732
Operation
40A to 240A, 4.5V ≤ V IN ≤ 32V, 0.6V ≤ V OUT ≤ 5V
LTC3778
Wide Operating Range, No R SENSE Step-Down Controller
Single Channel, Separate V ON Programming
3709fb
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
24
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
LT/LWI 1006 REV B ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2004
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