参数资料
型号: MIC2203YMM
厂商: Micrel Inc
文件页数: 1/13页
文件大小: 0K
描述: IC REG BUCK ADJ 0.3A 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 0.5V
输入电压: 2.3 V ~ 5.5 V
PWM 型: 电压模式
频率 - 开关: 1MHz
电流 - 输出: 300mA
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)
包装: 管件
供应商设备封装: 10-MSOP
产品目录页面: 1092 (CN2011-ZH PDF)
其它名称: 576-1720-5
MIC2203YMM-ND
MIC2203
High Efficiency 1MHz Synchronous
Buck Regulator
General Description
Features
The Micrel MIC2203 is a high efficiency 1MHz PWM
synchronous buck switching regulator. The MIC2203
features low noise constant frequency PWM
operation with a low dynamic supply current of
<1mA. The low noise and efficient operation both
make the MIC2203 well suited for sensitive RF, and
audio power applications.
The MIC2203 operates from 2.3V to 5.5V input and
can supply over 300mA of output current with output
voltages down to 0.5V. Additionally, the MIC2203
can be synchronized to an external clock, or multiple
MIC2203s can easily be daisy-chained with the
SYNCLOCK feature.
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Input voltage range: 2.3V to 5.5V
Output voltage adjustable down to 0.5V
300mA output current
Constant 1MHz PWM switching frequency
> 95% efficiency
< 1mA switching supply current
< 350 μ A static quiescent current
< 1 μ A shutdown current
All-ceramic capacitors
Easily synchronized to external clock
SYNCLOCK feature to daisy chain multiple
The MIC2203 has a high loop bandwidth with
corresponding ultra fast transient response times.
This reduces the output capacitor size, and is very
useful when powering applications that require fast
dynamic response such as CPU cores and RF
circuitry in high performance cellular phones and
PDAs.
The MIC2203 is available in 10-pin MSOP and
3mm x 3mm MLF?-10L package options with an
operating junction temperature range from –40oC to
125oC.
devices
? Thermal shutdown and current limit protection
? 10 pin MSOP, and 3mm x 3mm MLF-10L package
options
? –40oC to +125oC junction temperature range
Applications
? 802.11 WLAN modules
? MD players
? MP3 players
_____________________________________________________________________
Typical Application
10μH
MIC2203BMM
1.8V
300mA
2.3V to 5.5V
1μF
SYNC_IN
SYNC_OUT
EN
1
2
3
4
5
10
9
8
7
6
R1
10k
10nF
2.2μF
R2
3.83k
High Efficiency Buck Regulator
Micro Lead Frame and MLF are trademarks of Amkor Technologies.
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 (408   ) 944-0800 ? fax +1 (408) 474-1000 ? http://www.micrel.com
December 2004
M9999-120604
(408) 955-1690
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