Product category:
Power Supply ICs and Controllers
News Release from: Allegro MicroSystems Europe | Subject: A8483
Edited by the Electronicstalk Editorial
Team on 20 September 2005
Step-up convertor is biased about
displays
A new compact five-pin 1.2MHz step-up convertor IC is ideally suited to use as a power supply in display bias applications.
The new A8483 from Allegro MicroSystems Europe is a 1.2MHz step-up convertor IC which is ideally suited to use as a power supply in display bias applications The new five-pin device is ideal for battery-powered applications, but can also be used in applications such as plasma or LCD TV bias
This article was originally published on Electronicstalk on 30 Aug 2000 at 8.00am (UK)
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The current-mode step-up DC/DC convertor includes an integrated 36V FET and comes in a small 3 x 3mm 10-lead thermally enhanced MLP/TDFN lead-free package.
It can be used with lithium or alkaline NiMH batteries.
Input voltage can range from 2.5 to 10V when the device is connected directly to a battery or input rail and from 0.9 to 18V when an external bias supply is connected.
It delivers 15V at 15mA with 2.7V input, and the output voltage can be set up to 35V.
Typical switch current is 350mA and shutdown current 1mA.
The IC requires minimal external components which, when combined with the use of integrated switching, reduces component count and leads to a small PCB footprint in a variety of applications.
The use of a constant 1.2MHz switching frequency also provides low-noise operation.
Typical applications for the A8483 include portable battery-powered equipment such as mobile telephones, PDAs, camcorders, personal stereos, MP3 players, cameras, mobile GPS systems and HD TVs.
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