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MIC2204

Micrel Semiconductor
Part Number MIC2204
Manufacturer Micrel Semiconductor
Description High-Efficiency 2MHz Synchronous Buck Converter
Published Mar 22, 2005
Detailed Description MIC2204 Micrel MIC2204 High-Efficiency 2MHz Synchronous Buck Converter General Description The Micrel MIC2204 is a hi...
Datasheet PDF File MIC2204 PDF File

MIC2204
MIC2204

Overview
MIC2204 Micrel MIC2204 High-Efficiency 2MHz Synchronous Buck Converter General Description The Micrel MIC2204 is a high-efficiency, 2MHz PWM synchronous buck switching regulator.
Power conversion efficiency of above 95% is easily obtainable over a wide range of applications.
A proprietary internal compensation technique ensures stability with the smallest possible inductor and ceramic output capacitor.
The MIC2204 operates from 2.
3V to 5.
5V input and features internal power MOSFETs that can supply over 600mA of output current with output voltages down to 1V.
The MIC2204 implements a constant 2MHz pulse-width-modulation (PWM) control scheme which reduces spurious noise in sensitive RF and communication applications.
Additionally, the MIC2204 can be synchronized to an external clock, or multiple MIC2204s can easily be daisy-chained with the SYNCLOCK feature.
The MIC2204 has a high bandwidth loop (typ.
200kHz) which allows ultra-fast transient response times.
This is very useful when powering applications that require fast dynamic responses, such as the CPU cores and RF circuitry in highperformance cellular phones and PDAs.
The MIC2204 is available in 10-pin MSOP and 3mm × 3mm MLF™-10L package options with an operating junction temperature range from –40°C to 125°C .
Features • • • • • • • • • • • • • • • Input voltage range: 2.
3V to 5.
5V Output down to 1V/ 600mA 2MHz PWM operation Ultra-fast transient response (typical 200kHz GBW) Internal compensation All ceramic capacitors >95% efficiency Fully integrated MOSFET switches Easily synchronized to external clock SYNCLOCK feature to daisy-chain multiple 2204s <340µA quiescent current Logic controlled micropower shutdown Thermal shutdown and current limit protection 10-pin MSOP and 3mm×3mm MLF™-10L –40°C to +125°C junction temperature range Applications • • • • • • High-efficiency portable power Cellular phones PDAs 802.
11 WLAN power supplies RF power supplies Li Ion battery powered applications Typical Application ...


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