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AS1331

Description
300mA Buck-Boost Converter
CategoryPower/power management   
File Size650KB,33 Pages
ManufacturerAMS
Websitehttps://ams.com/zh
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AS1331 Overview

300mA Buck-Boost Converter

AS1331
300mA Buck-Boost Synchronous DC/DC
Converter
General Description
This special device is a synchronous buck-boost DC/DC
converter which can handle input voltages above, below, or
equal to the output voltage.
Due to the internal structure of the AS1331 which is working
continuously through all operation modes this device is ideal
for dual or triple cell alkaline/NiCd/NiMH as well as single cell
Li-Ion battery applications.
Because of the implemented Power Save Mode, the solution
footprint and the component count is minimized and also over
a wide range of load currents a high conversion efficiency is
provided.
The device includes two N-channel MOSFET switches and two
P-channel switches. Also following features are implemented:
a quiescent current of typically 22μA (ideal for battery power
applications), a shutdown current less than 1μA, current
limiting, thermal shutdown and output disconnect.
The AS1331 is available in a 10-pin 3x3mm TDFN package with
fixed and adjustable output voltage.
Ordering Information
and
Content Guide
appear at end of
datasheet.
Key Benefits & Features
The benefits and features of AS1331, 300mA Buck-Boost
Synchronous DC/DC Converter are listed below:
Figure 1:
Added Value of Using AS1331
Benefits
Ideal for single Li-Ion battery powered
applications
Features
Input voltage range: 1.8V to 5.5V
Output voltage range: 2.5V to 3.3V
Output current: 300mA @ 3.3V
Automatic transition between buck and boost mode
Short-circuit protection
Overtemperature protection
Output disconnection in shutdown
10-pin 3x3mm TDFN package
Supports a variety of end applications
Built-in self-protection
Small system area
ams Datasheet
[v1-06] 2015-Dec-07
Page 1
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