AS1339 650mA RF Step-Down DC-DC

austriamicrosystems AG

Description

www.DataSheet4U.com AS1339 6 5 0 m A R F St e p - D o w n D C - D C f o r PA, w i t h t w o L D O s D a ta s h e e t 1 General .
The AS1339 is a high-frequency step-down converter optimized for dynamically powering the power amplifier (PA) in WCDMA or NCDMA handsets.

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Datasheet Specifications

Part number: AS1339
Manufacturer: austriamicrosystems AG
File Size: 3.98 MB
Datasheet: AS1339_austriamicrosystemsAG.pdf
Description: 650mA RF Step-Down DC-DC

Features

* ! ! ! ! ! ! Fixed Switching Frequency: 2MHz PA Step-Down Converter Low Dropout Voltage Low Output-Voltage Ripple Dynamic Output Voltage Control (0.8V to 3.75V) 30µs Settling Time for 0.8V to 3.4V Output Voltage Change 650mA Output Drive Capability Two 10mA Low-Noise LDOs Low Shutdown Current Supply

Applications

* The AS1339 is ideal for WCDMA/NCDMA cellular handsets, Wireless PDAs, and Smartphones. Figure 1. Typical Operating Circuit VIN 2.7V to 5.5V 10µF VPA 0.8V to 3.75V IN1A PAA PAB IN1B LX 2.2µH 4.7µF PGND NC Analog Control REFIN PA ON/OFF LDO1 ON/OFF LDO2 ON/OFF NC VIN 2.7V to 5.5V 1µF PA_EN EN

AS1339 Distributors

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AS1339 650mA Step-Down DC-DC austriamicrosystems AG

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