Part number:
AS1339
Manufacturer:
austriamicrosystems AG
File Size:
3.98 MB
Description:
650ma rf step-down dc-dc.
AS1339_austriamicrosystemsAG.pdf
Datasheet Details
Part number:
AS1339
Manufacturer:
austriamicrosystems AG
File Size:
3.98 MB
Description:
650ma rf step-down dc-dc.
AS1339, 650mA RF Step-Down DC-DC
The AS1339 is a high-frequency step-down converter optimized for dynamically powering the power amplifier (PA) in WCDMA or NCDMA handsets.
The device uses a 110mΩ typical bypass FET to power the PA directly from the battery during high-power transmission.
The IC integrates two 10mA low-noise, low-dr
AS1339 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
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