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参数资料
| 型号： | LTC3427EDC#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 0.5A 6DFN |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.8 V ~ 5.25 V |
| 输入电压： | 1.8 V ~ 5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.25MHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-DFN-EP（2x2） |
LTC3427
500mA, 1.25MHz
Synchronous Step-Up
DC/DC Converter in
2mm × 2mm DFN Package
FEATURES
DESCRIPTIO
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High Efficiency: Up to 94%
3.3V at 200mA from Two Alkaline Cells
5V at 200mA from a Single Li-Ion Cell
Inrush Current Limiting and Soft-Start
Output Disconnect in Shutdown
1.8V to 5V V IN Range
1.8V to 5.25V V OUT Range
1.25MHz Fixed Frequency, Low Noise PWM
Internal Synchronous Rectifier
Logic Controlled Shutdown (<1 μ A)
Anti-Ringing Control Minimizes EMI
Tiny External Components
Short-Circuit Protection
Low Profile (0.75mm × 2mm × 2mm) DFN Package
The LTC ? 3427 is the industry’s first high efficiency, fixed
frequency, step-up DC/DC converter with true output
disconnect in a 6-lead 2mm × 2mm DFN package. Requir-
ing minimal external components, the LTC3427 operates
from an input voltage as low as 1.8V. The LTC3427
contains an internal 0.525 ? N-channel MOSFET switch
and a 0.575 ? P-channel MOSFET synchronous rectifier,
which enables it to supply 200mA at 3.3V from a 2-cell
alkaline battery input.
The LTC3427 limits inrush current during start-up and
provides a soft-start of V OUT . A switching frequency of
1.25MHz minimizes solution footprint by allowing the use
of tiny, low profile inductors and ceramic capacitors and
produces very low V OUT ripple. The current mode PWM
APPLICATIO S
design is internally compensated, reducing external parts
count. Anti-ringing control reduces EMI in discontinuous
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Handheld Instruments
Digital Cameras
Wireless Handsets
GPS Receivers
Portable Medical Devices
MP3 Players
mode operation. The LTC3427 also features low shut-
down current of under 1 μ A and thermal shutdown.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
2.4V to 3.3V Efficiency
2-Cell Alkaline to 3.3V Synchronous Boost Converter
100
1000
V IN
4.7 μ H
95
1.8V TO 3.2V
2-CELL
ALKALINE
+
2.2 μ F
90
EFFICIENCY
V IN
SW
LTC3427
V OUT
85
100
OFF ON
SHDN
GND
V OUT
FB
1000k
3.3V
200mA
4.7 μ F
80
75
P OWER LOS S
604k
70
10
3427 TA01a
10
100
LOAD CURRENT (mA)
1000
3427 TA01b
3427fa
1
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相关代理商/技术参数 |
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| LTC3428 | 制造商:LINER 制造商全称:Linear Technology 功能描述:4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm 3mm DFN |
| LTC3428EDD | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 1.6V to 4.5V 10-Pin DFN EP |
| LTC3428EDD#PBF | 功能描述:IC REG BOOST ADJ 4A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LTC3428EDD#TRPBF | 功能描述:IC REG BOOST ADJ 4A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LTC3428EDDPBF | 制造商:Linear Technology 功能描述:4A 1MHz 2-ph.Step-up DC-DC Conv DFN10EP |
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