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FAN5902 - 800mA Buck Converter

Datasheet Summary

Description

The FAN5902 is a high-efficiency, low-noise, synchronous, step-down DC-to-DC converter designed for powering the radio frequency power amplifiers (RFPA) in 3G mobile handsets and other mobile applications.

It provides up to 800mA of output current over an input voltage range of 2.7V to 5.5V.

Features

  • 92% Efficient Synchronous Operation 2.7V to 5.5V Input Voltage Range VOUT Range from 0.4V to 3.4V (or VIN) Up to 800mA Output Current 20µs Step Response 30µs Bypass Transition Time 50mΩ Integrated Bypass FET with Controlled Slew Rate for Low Battery Voltage Operation 6MHz PWM Operation Allows 470nH Small Form Factor Inductor 100% Duty Cycle for Low Dropout Operation Thermal Shutdown Input Under-Voltage Lockout 12-Lead.

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Datasheet preview – FAN5902

Datasheet Details

Part number FAN5902
Manufacturer Fairchild Semiconductor
File Size 426.46 KB
Description 800mA Buck Converter
Datasheet download datasheet FAN5902 Datasheet
Additional preview pages of the FAN5902 datasheet.

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Full PDF Text Transcription

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FAN5902 — 800mA Buck Converter for 3G RFPAs www.DataSheet4U.com May 2009 FAN5902 800mA Buck Converter for 3G RFPAs Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ 92% Efficient Synchronous Operation 2.7V to 5.5V Input Voltage Range VOUT Range from 0.4V to 3.4V (or VIN) Up to 800mA Output Current 20µs Step Response 30µs Bypass Transition Time 50mΩ Integrated Bypass FET with Controlled Slew Rate for Low Battery Voltage Operation 6MHz PWM Operation Allows 470nH Small Form Factor Inductor 100% Duty Cycle for Low Dropout Operation Thermal Shutdown Input Under-Voltage Lockout 12-Lead MLP (0.
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