参数资料
型号: LTC3707IGN#TRPBF
厂商: Linear Technology
文件页数: 32/32页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 28-SSOP
标准包装: 2,500
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 360kHz
占空比: 99.4%
电源电压: 4.5 V ~ 28 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: 28-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
LTC3707
TYPICAL APPLICATION
V PULL-UP
1
RUN/SS1
PGOOD
28
(<7V)
PGOOD
L1
0.1μF
2
SENSE1 +
TG1
27
8μH
0.015Ω
V OUT1
5V
27pF
105k
1%
1000pF
3
SENSE1 –
SW1
26
3A; 4A PEAK
20k
1%
INTV CC
4
5
V OSENSE1
FREQSET
BOOST1
V IN
25
24
0.1μF
M1A
M1B
33pF
15k
33pF
0.01μF
220pF
3.3V
6
7
8
9
10
STBYMD
FCB
LTC3707
I TH1
SGND
3.3V OUT
BG1
EXTV CC
INTV CC
PGND
BG2
23
22
21
20
19
1μF
10V
CMDSH-3TR
4.7μF
CMDSH-3TR
10Ω
0.1μF
22μF
50V
47μF 6.3V
56μF, 4V
GND
V IN
5.2V TO
28V
15k
20k
220pF
11
12
I TH2
V OSENSE2
BOOST2
SW2
18
17
0.1μF
M2A
M2B
1%
13
SENSE2 –
TG2
16
V OUT2
3.3V
27pF
63.4k
1%
1000pF
14
SENSE2 +
RUN/SS2
15
L2
8μH
0.015Ω
3A; 4A PEAK
0.1μF
3707 F13
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
Figure 13. LTC3707 5V/4A, 3.3V/4A Regulator
RELATED PARTS
PART NUMBER
LTC1159
DESCRIPTION
High Ef?ciency Synchronous Step-Down Switching Regulator
COMMENTS
100% DC, Logic Level MOSFETs, V IN < 40V
LTC1438/LTC1439
Dual High Ef?ciency Low Noise Synchronous Step-Down Switching Regulators POR, Auxiliary Regulator
LTC1438-ADJ
Dual Synchronous Controller with Auxiliary Regulator
POR, External Feedback Divider
LTC1538-AUX
LTC1539
Dual High Ef?ciency Low Noise Synchronous Step-Down Switching Regulator Auxiliary Regulator, 5V Standby
Dual High Ef?ciency Low Noise Synchronous Step-Down Switching Regulator 5V Standby, POR, Low-Battery, Aux Regulator
LTC1530
LTC1625/LTC1775
High Power Step-Down Syncrhonous DC/DC Controller in SO-8
No R SENSE ? Current Mode Synchronous Step-Down Controller
High Ef?ciency 5V to 3.3V Conversion at Up to 15A
97% Ef?ciency, No Sense Resistor, 16-Pin SSOP
LTC1628/LTC1628-PG Dual High Ef?ciency 2-Phase Synchronous Step-Down Switching Regulator
Constant Frequency, 5V and 3.3V LDOs, VIN ≤ 36V
LTC1629
LTC1702
LTC1703
LT1709
LTC1735
LTC1736
LTC1929
20A to 200A PolyPhase ? Synchronous Controller
No R SENSE 2-Phase Dual Synchronous Step-Down Controller
No R SENSE 2-Phase Dual Synchronous Step-Down Controller with 5-Bit
Mobile VID Control
High Ef?ciency, 2-Phase Synchronous Step-Down Switching Regulator with
5-Bit VID
High Ef?ciency Synchronous Step-Down Switching Regulator
High Ef?ciency Synchronous Controller with 5-Bit Mobile VID Control
2-Phase Synchronous Controller
Expandable from 2-Phase to 12-Phase, Uses All
Surface Mount Components, No Heat Sink
550kHz, No Sense Resistor
Mobile Pentium III Processors, 550kHz, V IN ≤ 7V
1.3V ≤ V OUT ≤ 3.5V, Current Mode Ensures Accurate
Current Sharing, 3.5V ≤ V IN ≤ 36V
Output Fault Protection, 16-Pin SSOP
Output Fault Protection, 24-Pin SSOP, 3.5V ≤ V IN ≤ 36V
Up to 42A, Uses All Surface Mount Components,
No Heat Sink, 3.5V ≤ V IN ≤ 36V
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
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630  McCarthy  Blvd.,  Milpitas,  CA  95035-7417
LT 0508 REV B ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2001
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