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參數資料
| 型號： | MIC2225-GMYMT TR |
| 廠商： | Micrel Inc |
| 文件頁數： | 1/15頁 |
| 文件大小： | 354K |
| 描述： | IC REG DL BUCK/LINEAR 10TMLF |
| 標準包裝： | 1 |
| 拓撲： | 降壓（降壓）（1），線性（LDO）（1） |
| 功能： | 任何功能 |
| 輸出數： | 2 |
| 頻率 - 開關： | 2MHz |
| 電壓/電流 - 輸出 1： | 1.8V，600mA |
| 電壓/電流 - 輸出 2： | 2.8V，300mA |
| 帶 LED 驅動器： | 無 |
| 帶監控器： | 無 |
| 帶序列發生器： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-UFDFN，10-TMLF? |
| 供應商設備封裝： | 10-TMLF?（2x2） |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 1092 (CN2011-ZH PDF) |
| 其它名稱： | 576-3105-6 |
MIC2225
2MHz 600mA Synchronous Buck
Regulator with 300mA LDO
MLF and MicroLeadFrame 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
February 2008
M9999-022008-D
General Description
The Micrel MIC2225 is a dual output regulator featuring a
high efficiency 2MHz PWM synchronous buck (step-down)
regulator and a 300mA LDO. The MIC2225 is an ultra-low
noise, small size, and high efficiency solution for portable
power applications, providing core and I/O supply rails for
applications like application processors, camera DSPs and
multimedia chipsets.
In PWM mode, the MIC2225 operates with a constant
2MHz frequency. The MIC2225 switching regulator
operates from 2.7V to 5.5V input and features internal
power MOSFETs that can supply up to 600mA output
current in PWM mode.
The MIC2225 is available in the 10-pin 2mm x 2mm Thin
MLF
?/DIV>
package with a junction operating range from 40癈
to +125癈.
Data sheets and support documentation can be found on
Micrels web site at: www.micrel.com.
Features
DC-DC Converter
" 2.7 to 5.5V supply voltage
" 2MHz PWM mode
" Output current to 600mA
" >95% efficiency
" 100% maximum duty cycle
" Fixed output voltage option down to 1V
" Ultra-fast transient response
" Stable with 2.2礔 ceramic output capacitor
" Fully integrated MOSFET switches
" Micropower shutdown (1mA in shutdown)
" Thermal shutdown and current limit protection
" Pb-free 10-pin 2mm x 2mm Thin MLF
?/DIV>
package
" 40癈 to +125癈 junction temperature range
LDO
" V
IN
range 2.7V to 5.5V
" 300mA output current
" Output voltage down to 0.8V
" Thermal shutdown protection
" Current limit protection
Applications
" Cellular phones
" PDAs
" USB peripherals
___________________________________________________________________________________________________________
Typical Application
0
10
20
30
40
50
60
70
80
90
100
0 0.1 0.2 0.3 0.4 0.5 0.6
LOAD CURRENT (A)
1.8V Efficiency @ 25癈
2.7V
IN
5.5V
IN
3.6V
IN
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