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參數資料
| 型號： | MIC4723 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | 3A 2MHz Integrated Switch Buck Regulator |
| 中文描述： | 第3A 2MHz的集成開關降壓穩壓器 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 527K |
| 代理商： | MIC4723 |
MIC4723
3A 2MHz Integrated Switch
Buck Regulator
General Description
The Micrel MIC4723 is a high efficiency PWM buck (step-
down) regulator that provides up to 3A of output current.
The MIC4723 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
MIC4723 allows efficiencies over 92%, reduces external
components count and eliminates the need for an
expensive current sense resistor.
The MIC4723 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 MIC4723 is available in the exposed pad 12-pin
3mm x 3mm MLF package with a junction operating
range from –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
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
1
M9999-052307-A
Features
2.7 to 5.5V supply voltage
2.0MHz PWM mode
Output current to 3A
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 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
FPGA/DSP/ASIC applications
General point of load
Broadband communications
DVD/TV recorders
Point of sale
Printers/Scanners
Set top boxes
Computing peripherals
Video cards
___________________________________________________________________________________________________________
Typical Application
3A 2MHz Buck Regulator
76
78
80
82
84
86
88
90
92
94
96
0.5
OUTPUT CURRENT (A)
1
1.5
2
2.5
3
MIC4723
3.3V
OUT
Efficiency
4.5V
IN
5V
IN
5.5V
IN
0
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| MIC49200WR | 2A LOW VOLTAGE LDO WITH DUAL INPUT VOLTAGES |
| MIC5011 | Minimum Parts High- or Low-Side MOSFET Driver(高/低邊MOS場效應管驅動器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC4723_08 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:3A 2MHz Integrated Switch Buck Regulator |
| MIC4723YML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC4723YML TR | 功能描述:直流/直流開關調節器 3A 2MHz Buck Regulator in MLF 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 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC4723YML-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:停產 功能:降壓 輸出配置:正 拓撲:降壓 輸出類型:可調式 輸出數: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:2MHz 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 |
| MIC4723YMME | 功能描述:直流/直流開關調節器 3A 2MHz Buck Regulator in epad MSOP-10 Pkg 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 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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