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| 型号： | MCP1612T-ADJI/MF |
| 厂商： | Microchip Technology |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 1A 8DFN |
| 标准包装： | 3,300 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.4MHz |
| 电流 - 输出： | 1A |
| 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： | 8-VDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN-EP（3x3） |
MCP1612
Single 1A, 1.4 MHz Synchronous Buck Regulator
Features
Description
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Fixed Switching Frequency: 1.4 MHz
Input Operating Voltage Range: 2.7V to 5.5V
Integrated Buck and Synchronous Switches
Adjustable-Output Voltage Range: 0.8V to 5.0V
100% Duty Cycle Capable for Low Input Voltage
Continuous Output Current Capability: 1A
Shutdown Control with I Q < 0.01 μ A (Typ.)
Integrated Soft-Start Feature
Integrated Undervoltage Lockout (UVLO)
Protection
Integrated Overtemperature Protection
Fast Dynamic Response to Line and Load Steps
Small, 8-Pin DFN and MSOP Packages
Operating Temperature Range: -40°C to +85°C
The MCP1612 is a 1A, 1.4 MHz, fully-integrated,
current mode-controlled, synchronous buck regulator.
The MCP1612 is packaged in the 8-pin MSOP and
space-saving, 3x3 DFN packages. The DFN package
also provides a lower thermal resistance package
option for high-power, high ambient temperature
applications. With an input operating range from 2.7V
to 5.5V, the MCP1612 is ideal for applications that are
powered by one single-cell Li-Ion, 2- to 3-cell NiMH,
NiCd or alkaline sources.
The output voltage of the MCP1612 is easily set over
the range of 0.8V to 5.0V by using an external resistor
divider. The external inductor and output capacitor size
are minimized due to an internally-fixed, 1.4 MHz clock
being used to set the switching frequency. The fixed
clock allows for continuous, fixed-frequency PWM
Applications
operation over the full load range.
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Network Interface Cards
Portable Computers
Set-Top Boxes
DSL Modems and Routers
USB-Powered Devices
GBIC Modules
High-Speed Data System Bus Termination
Medical Instruments
Cellular/GSM/PHS Phones
+5V or +3.3V Distributed Voltages
The MCP1612 is designed to provide fast dynamic
response to sudden changes in input voltage and load
current to minimize the necessary amount of external
output capacitance.
The MCP1612 can be used with ceramic, tantalum or
aluminum electrolytic output capacitors. Ceramic
capacitors with values as low as 4.7 μF can be used to
keep the output ripple voltage low. For applications that
require better load step performance, the value of the
output capacitor can be increased to 47 μF.
Additional features integrated into the MCP1612
include shutdown capability, soft-start, UVLO,
overcurrent and overtemperature protection.
Package Types
8-Lead DFN
8-Lead MSOP
? 2005 Microchip Technology Inc.
V IN 1
V CC 2
SHDN 3
COMP 4
8 L X
7 P GND
6 A GND
5 FB
V IN 1
V CC 2
SHDN 3
COMP 4
8 L X
7 P GND
6 A GND
5 FB
DS21921B-page 1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP1612T-ADJIMS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Single 1A, 1.4 MHz Synchronous Buck Regulator |
| MCP1612T-I/MF | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Single 1A, 1.4 MHz Synchronous Buck Regulator |
| MCP1612T-I/MS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Single 1A, 1.4 MHz Synchronous Buck Regulator |
| MCP1614-150X120I/ER | 功能描述:直流/直流开关转换器 1.4MHz 1A Synch-Buck RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MCP1614-150X120I/QR | 制造商:Microchip Technology Inc 功能描述:DUAL-1.4MHZ, 1.0A, SYNCH-BUCK REGULATOR, ADJ. OUTPUT - Rail/Tube |
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