MIC2224 Datasheet PDF (High Efficiency 2MHz PWM Buck Converter)

MIC2224 - High Efficiency 2MHz PWM Buck Converter

Description

The MIC2224 is a high efficiency 2MHz PWM synchronous buck switching regulator optimized for powering 2.5G and 3G CDMA RF Power Amplifiers.

The output voltage of MIC2224 can be dynamically adjusted with an external DAC to maximize PA efficiency versus required output power.

Features

built-in power MOSFETs that can supply up to 600mA of output current in PWM mode, or over 1A in bypass mode. The MIC2224 can operate with a maximum duty cycle of 100% for use in low-dropout conditions. The MIC2224 has a junction temperature range of.
40°C to +125°C and is available in a 10-pin 3mm x 3mm MLF® package. Data sheets and support documentation can be found on Micrel’s web site at www. micrel. com. Features.
2.7V to 5.5V input voltage range.
DAC-adjustable outp.

Datasheet Details

Part number	MIC2224
Manufacturer	Micrel Semiconductor
File Size	379.63 KB
Description	High Efficiency 2MHz PWM Buck Converter
Datasheet	MIC2224 Datasheet
Additional preview pages of the MIC2224 datasheet.

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Full PDF Text Transcription

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MIC2224 High Efficiency 2MHz PWM Buck Converter with DAC Input and 40mΩ Bypass Switch General Description The MIC2224 is a high efficiency 2MHz PWM synchronous buck switching regulator optimized for powering 2.5G and 3G CDMA RF Power Amplifiers. The output voltage of MIC2224 can be dynamically adjusted with an external DAC to maximize PA efficiency versus required output power. When the PA requires the highest power, the DAC can be used to enable a low on-resistance, 40mΩ, bypass switch that powers the PA directly from the battery. The 2MHz PWM operation of MIC2224 allows the smallest possible components. It also allows the device to easily meet stringent W-CDMA VOUT response specifications. The MIC2224 operates from a 2.7V to 5.

Published: Apr 17, 2010 |