參數(shù)資料
型號： MCP1612
廠商： Microchip Technology Inc.
英文描述： Single 1A, 1.4 MHz Synchronous Buck Regulator
中文描述： 單1A條，1.4 MHz的同步降壓穩(wěn)壓器
文件頁數(shù)： 1/22頁
文件大?。?/td> 230K
代理商： MCP1612
2005 Microchip Technology Inc.
DS21921B-page 1
MCP1612
Features
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
Applications
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
Description
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
operation over the full load range.
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,
overcurrent and overtemperature protection.
soft-start,
UVLO,
Package Types
8-Lead DFN
1
2
3
4
8
7
6
5
V
CC
SHDN
COMP
V
IN
P
GND
A
GND
FB
L
X
1
2
3
4
8
7
6
5
V
CC
SHDN
COMP
V
IN
P
GND
A
GND
FB
L
X
8-Lead MSOP
Single 1A, 1.4 MHz Synchronous Buck Regulator
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP1612_13 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Single 1A, 1.4 MHz Synchronous Buck Regulator
MCP1612-120I/MS 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MCP1612-150I/MS 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MCP1612-180I/MS 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MCP1612-250I/MS 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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