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參數(shù)資料
| 型號： | MIC4722 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | 3mm x 3mm 2.7MHz 3A PWM Buck Regulator |
| 中文描述： | 采用3mm x 3mm 2.7兆赫3A PWM降壓調(diào)節(jié) |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 581K |
| 代理商： | MIC4722 |
MIC4722
3mm x 3mm 2.7MHz 3A PWM Buck Regulator
General Description
The Micrel MIC4722 is a high efficiency PWM buck (step-
down) regulator that provides up to 3A of output current.
The MIC4722 operates at 2.7MHz that makes it suitable
for next generation XDSL modems requiring operating
frequencies in excess of 2.4MHz and has proprietary
internal compensation that allows a closed loop bandwidth
of over 200KHz.
The low on-resistance internal p-channel MOSFET of the
MIC4722 allows efficiencies over 92%, reduces external
components count and eliminates the need for an
expensive current sense resistor.
The MIC4722 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 MIC4722 is available in the exposed pad 12-pin
3mm x 3mm MLF
package with a junction operating
range from –40°C to +125°C.
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
September 2007
M9999-090507-B
Features
2.7 to 5.5V supply voltage
2.7MHz PWM mode
Output current to 3A
>92% efficiency
100% maximum duty cycle
Adjustable output voltage option down to 1V
Ultra-fast transient response
Ultra-small external components
Stable with a 0.47μH inductor and a 4.7μF output
capacitor
Fully integrated 3A 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
Applications
5V or 3.3V Point of Load Conversion
Telecom/Networking Equipment
Set Top Boxes
Storage Equipment
Video Cards
Typical Application
MIC4722
3A 2.7MHz Buck Regulator
相關PDF資料 |
PDF描述 |
|---|---|
| MIC4722YML | 3mm x 3mm 2.7MHz 3A PWM Buck Regulator |
| MIC4807 | 80V 8-Channel Addressable Low-Side Driver |
| MIC4807BN | 80V 8-Channel Addressable Low-Side Driver |
| MIC4826 | Low Input Voltage, 160VPP Output Voltage, EL Driver |
| MIC4826BMM | Low Input Voltage, 160VPP Output Voltage, EL Driver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MIC4722_10 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:3mm x 3mm 2.7MHz 3A PWM Buck Regulator |
| MIC4722YML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC4722YML TR | 功能描述:直流/直流開關調(diào)節(jié)器 3mm X 3mm 2.7MHz 3A PWM Buck Regulator RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC4722YML-TR | 功能描述:Buck Switching Regulator IC Positive Adjustable 1V 1 Output 3A 12-VFDFN Exposed Pad, 12-MLF? 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 功能:降壓 輸出配置:正 拓撲:降壓 輸出類型:可調(diào)式 輸出數(shù):1 電壓 - 輸入（最小值）:2.7V 電壓 - 輸入（最大值）:5.5V 電壓 - 輸出（最小值/固定）:1V 電壓 - 輸出（最大值）:5.5V 電流 - 輸出:3A 頻率 - 開關:2.7MHz 同步整流器:無 工作溫度:-40°C ~ 125°C （TJ） 安裝類型:表面貼裝 封裝/外殼:12-VFDFN 裸焊盤，12-MLF? 供應商器件封裝:12-MLF?（4x4） 標準包裝:1 |
| MIC4723 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:3A 2MHz Integrated Switch Buck Regulator |
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