参数资料
型号: LTC3827IG-1#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: 2,000
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 580kHz
占空比: 99.4%
电源电压: 4 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: 28-SSOP(0.209",5.30mm 宽)
包装: 带卷 (TR)
LTC3827-1
TYPICAL APPLICATION
C SS1
0.01μF
C ITH1A
100pF
39pF
High Ef?ciency Dual 3.3V/8.0V Step-Down Converter
C ITH1
1200pF
R ITH1
10k
R B1
215k
R A1
68.1k
I TH1
V FB1
TRACK/SS1
PGOOD1
R2
100k
C1
1nF
SENSE1 +
SENSE1 –
PLLLPF
TG1
SW1
BOOST1
C B1 0.47μF
MTOP1 L1
1.5μH
R SNS1
5mΩ
C OUT1
150μF
× 2
V OUT1
3.3V
10A
PLLIN/MODE
BG1
MBOT1
SGND
RUN1
LTC3827-1
V IN
PGND
D1
C IN1
C IN2
V IN
12V
10μF
10μF
C2
1nF
RUN2
SENSE2 –
EXTV CC
INTV CC
C INT2
1μF
C INT1
4.7μF
R A2
39.2k
SENSE2 +
BG2
D2 C B2
0.47μF
C ITH2
560pF
C ITH2A
100pF
C SS2
0.01μF
R ITH2
35k
R B2
353k
V FB2
I TH2
TRACK/SS2
BOOST2
SW2
TG2
MTOP2 L2
7.2μH
R SNS2
15mΩ
V OUT2
8V
RELATED PARTS
MTOP1, MTOP2, MBOT1, MBOT2: Si7848DP
L1: CDEP105-3R2M
L2: CDEP105-7R2M
C OUT1 , C OUT2 : SANYO 10TPD150M
MBOT2
38271 TA06
C OUT2
150μF
2A
PART NUMBER
DESCRIPTION
COMMENTS
LTC1628/LTC1628-PG/ 2-Phase, Dual Output Synchronous Step-Down
Reduces C IN and C OUT , Power Good Output Signal, Synchronizable,
LTC1628-SYNC
LTC1735
LTC1778/LTC1778-1
LT1976
LTC3708
LTC3727/LTC3727A-1
LTC3728
LTC3729
LTC3731
LTC3835/LTC3835-1
DC/DC Controller
High Ef?ciency Synchronous Step-Down
Switching Regulator
No R SENSE ? Current Mode Synchronous Step-Down
Controllers
High Voltage Step-Down Switching Regulator
Dual, 2-Phase, DC/DC Controller with Output Tracking
2-Phase Dual Synchronous Controller
Dual, 550kHz, 2-Phase Synchronous Step-Down
Controller
20A to 200A, 550kHz PolyPhase ? Synchronous Controller
3- to 12-Phase Step-Down Synchronous Controller
Low I Q Synchronous Step-Down Controller
3.5V ≤ V IN ≤ 36V, I OUT Up to 20A, 0.8V ≤ V OUT ≤ 5V
Output Fault Protection, 16-Pin SSOP Package
Up to 97% Ef?ciency, 4V ≤ V IN ≤ 36V, 0.8V ≤ V OUT ≤ (0.9)(V IN ),
I OUT Up to 20A
3.3V ≤ V IN ≤ 60V, 100μA Quiescent Current
Current Mode, No R SENSE , Up/Down Tracking, Synchronizable
0.8V ≤ V OUT ≤ 14V; 4V ≤ V IN ≤ 36V
Dual 180° Phased Controllers, V IN 3.5V to 35V, 99% Duty Cycle,
5mm × 5mm QFN and SSOP-28 Packages
Expandable from 2-Phase to 12-Phase, Uses All Surface Mount
Components, V IN Up to 36V
60A to 240A Output Current, 0.6V ≤ V OUT ≤ 6V, 4.5V ≤ V IN ≤ 32V
Single Channel LTC3827/LTC3827-1
PolyPhase is a registered trademark of Linear Technology Corporation. No R SENSE is a trademark of Linear Technology Corporation.
38271fe
32 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630  McCarthy  Blvd.,  Milpitas,  CA  95035-7417
LT 0808 REV E ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2005
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