参数资料
型号: MIC4720YMME
厂商: Micrel Inc
文件页数: 1/21页
文件大小: 0K
描述: IC REG BUCK ADJ 2A 10MSOP
标准包装: 100
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 1V
输入电压: 2.7 V ~ 5.5 V
频率 - 开关: 2MHz
电流 - 输出: 2A
同步整流器:
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: 管件
供应商设备封装: 10-MSOP 裸露焊盘
产品目录页面: 1093 (CN2011-ZH PDF)
其它名称: 576-1654-5
MIC4720YMME-ND
MIC4720
3mm x 3mm 2.0MHz 2A Integrated
Switch Buck Regulator
General Description
The Micrel MIC4720 is a high efficiency PWM buck (step-
down) regulator that provides up to 2A of output current.
The MIC4720 operates at 2.0MHz and has proprietary
internal compensation that allows a closed loop bandwidth
of over 200KHz.
The low on-resistance internal p-channel MOSFET of the
MIC4720 allows efficiencies over 92%, reduces external
components count and eliminates the need for an
expensive current sense resistor.
The MIC4720 operates from 2.7V to 5.5V input and the
output can be adjusted down to 1V. The devices can
operate with a maximum duty cycle of 100% for use in low-
dropout conditions.
The MIC4720 is available in the exposed pad 12-pin
3mm x 3mm MLF ? and 10-pin ePad MSOP package with a
junction operating range from –40°C to +125°C.
Features
? 2.7 to 5.5V supply voltage
? 2.0MHz PWM mode
? Output current to 2A
? Up to 94% efficiency
? 100% maximum duty cycle
? Adjustable output voltage option down to 1V
? Ultra-fast transient response
? Ultra-small external components
Stable with a 1μH inductor and a 4.7μF output
capacitor
? Fully integrated 2A MOSFET switch
? Micropower shutdown
? Thermal shutdown and current limit protection
? Pb-free 12-pin 3mm x 3mm MLF ? package
? –40 ° C to +125 ° C junction temperature range
? Pb-free 10-pin ePad MSOP package
Applications
?
?
?
?
?
?
?
?
?
FPGA/DSP/ASIC applications
General point of load
Broadband communications
DVD/TV recorder
Point of Sale
Printers/Scanners
Set Top Boxes
Computing Peripherals
Video Cards
Typical Application
MIC4720
100
95
3.3V OUT Efficiency
V IN = 4.5V
V = 5.0V
V = 5.5V
MIC4720
90
85
IN
IN
80
75
70
65
OUTPUT CURRENT (A)
2A 2.0MHz Buck Regulator
MLF and Micro LeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
May 2007
M9999-051707
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