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AS1312

ams
Part Number AS1312
Manufacturer ams
Description Hysteretic DC-DC Step-up Converter
Published Feb 18, 2015
Detailed Description AS1312 Ultra Low Quiescent Current, Hysteretic DC-DC Step-up Converter General Description The AS1312 is an ultra low ...
Datasheet PDF File AS1312 PDF File

AS1312
AS1312

Overview
AS1312 Ultra Low Quiescent Current, Hysteretic DC-DC Step-up Converter General Description The AS1312 is an ultra low IQ hysteretic step-up DC-DC converter.
The AS1312 achieves an efficiency of up to 94% and is designed to operate from a +0.
7V to +5.
0V supply, the output voltage is fixed in 50mV steps from +2.
5V to 5.
0V.
In order to save power the AS1312 features a shutdown mode, where it draws less than 100nA.
In shutdown mode the battery is not connected to the output.
If the input voltage exceeds the output voltage the device is in a feedthrough mode and the input is directly connected to the output voltage.
In light load operation, the device enters a sleep mode when most of the internal operating blocks are turned off in order to save power.
This mode is active approximately 50μs after a current pulse provided that the output is in regulation.
The AS1312 also offers an adjustable low battery detection.
If the battery voltage decreases below a threshold defined by two external re...


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