参数资料
型号: LTC3872IDDB#TRMPBF
厂商: Linear Technology
文件页数: 22/22页
文件大小: 0K
描述: IC REG CTRLR BST PWM CM 8-DFN
标准包装: 500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 650kHz
电源电压: 2.75 V ~ 9.8 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 8-WFDFN 裸露焊盘
包装: 带卷 (TR)

LTC3872
TYPICAL APPLICATION
3.3V Input, 5V/2A Output Boost Converter
47pF
1nF
1M
1.8nF
17.4k
V IN
I TH
IPRG
RUN/SS
LTC3872
V IN
L1
1μH
C IN
10μF
V IN
3.3V
GND
SW
11k
1%
V FB
34.8k
1%
NGATE
M1
D1
C OUT
100μF
× 2
V OUT
5V
2A
RELATED PARTS
D1: DIODES INC. B320
L1: TOKO FDV0630-1R0
M1: VISHAY Si3460DDV
3872 TA02
PART NUMBER
LTC1872/LTC1872B
LTC3401/LTC3402
LTC1871/LTC1871-7
LTC3703/LTC3703-5
LTC3803/LTC3803-5
DESCRIPTION
Current Mode PWM Controller
Current Mode DC/DC Controller
No R SENSE Synchronous Step-Up Controller
Wide Input Range Controller
SOT-23 Boost Controller
1.2MHz, SOT-23 Boost Converter
Inverting 1.2MHz, SOT-23 Converter
1A/2A 3MHz Synchronous Boost Converters
Positive-to Negative DC/DC Controller
No R SENSE , Wide Input Range DC/DC Boost Controller
100V Synchronous Controller
200kHz Flyback DC/DC Controller
COMMENTS
300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
V IN Up to 36V
Up to 95% Efficiency, Operating as Low as 0.9V Input
No R SENSE , 7V Gate Drive, Current Mode Control
Delievers Up to 5A, 550kHz Fixed Frequency, Current Mode
Up to 34V Output, 2.6V V IN 16V, Miniature Design
Positive-to Negative DC/DC Conversion, Miniature Design
Up to 97% Efficiency, Very Small Solution, 0.5V ≤ V IN ≤ 5V
No R SENSE , Current Mode Control, 50kHz to 1MHz
No R SENSE , Current Mode Control, 2.5V ≤ V IN ≤ 36V
Step-Up or Step Down, 600kHz, SSOP-16, SSOP-28
Optimized for Driving 6V MOSFETs ThinSOT
3872fc
Linear Technology Corporation
(408) 432-1900 ● FAX : (408) 434-0507 www.linear.com/LTC3872
22
For more
1630 McCarthy Blvd., Milpitas, CA 95035-7417 information www.linear.com/LTC3872
LT 1113 REV C ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2007
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