Product category:
Power Supply ICs and Controllers
News Release from: Advanced Analogic Technologies | Subject: AAT3119
Edited by the Electronicstalk Editorial
Team on 14 December 2004
Charge-pump chip cuts supply size
Optimised for battery-powered portable applications, a new fixed-frequency high-efficiency charge pump can be used with ultrasmall 1uF capacitors on the input and output lines.
Optimised for battery-powered portable applications, a new fixed-frequency high-efficiency charge pump can be used with ultrasmall 1uF capacitors on the input and output lines Conserving valuable board space, the AAT3119 eliminates the need for an inductor, requires only three small external capacitors, and is available in a compact 8-pin SC70JW package
This article was originally published on Electronicstalk on 19 Sep 2008 at 8.00am (UK)
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Representing the company's next generation of regulated voltage doublers, the AAT3119 produces current levels up to 150mA and delivers 300mA of pulsed current.
Operating from a 2.7 to 5.5V input range, the device is ideal for RGB and white LED backlighting applications in cellular phones, MP3 players, PDAs and other handheld devices.
The AAT3119 delivers a fixed switching frequency that does not change with output current.
This is a very important design consideration for noise-sensitive wireless applications like cellphones, where pinpointing a specific switching frequency simplifies the system design.
AnalogicTech's AAT3119 offers significantly higher operating frequencies and lower output ripple than its predecessors.
A thermal management system protects the IC during any short-circuit condition at the output pin by sensing die temperature and shutting down the device.
Integrated soft-start circuitry prevents excessive inrush current during startup.
A low current shutdown feature reduces quiescent current to less than 1uA.
Rated over the -40 to +85C industrial temperature range, samples and production quantities of the AAT3119 are available now.
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