Product category: Power Supply ICs and Controllers
News Release from: Advanced Analogic Technologies | Subject: AAT4285 slew-rate controlled load switch
Edited by the Electronicstalk Editorial Team on 27 April 2007
Load switch supports 21V operation
The AAT4285 is an integrated slew-rate controlled load switch capable of supporting 12V operation.
Advanced Analogic Technologies has brought out the AAT4285, an integrated slew-rate controlled load switch capable of supporting 12V operation By integrating level-shift and slew-rate control functions into a single device, the AAT4285 allows designers to reduce power consumption and minimise parts count in a wide range of new 12V applications in portable consumer as well as non-portable industrial systems
This article was originally published on Electronicstalk on 16 Jun 2004 at 8.00am (UK)
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"Until now our extensive line of slew-rate controlled load switches have been widely used to replace discrete solutions in a variety of portable systems running off a 5V supply", says Phil Dewsbury, product line director for AnalogicTech.
"By offering the same functionality for 12V operation, the AAT4285 allows designers for the first time to eliminate a discrete MOSFET and up to 11 external components in both higher powered portable systems such as test equipment or camcorders as well as a wide range of nonportable industrial applications".
The AAT4285 is a P-channel MOSFET switch designed for high-side load-switching applications.
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The device operates across a 3.0 to 13.2V input range.
Functionally compatible with AnalogicTech's AAT4250 and AAT4280 products, the AAT4285 offers a fast load switch turn-on time of 100us.
A fast shutdown load discharge capability allows the device to quickly turn off a load circuit when the switch is disabled.
The AAT4285 also offers a very low RDS(ON) of 240mOhm typical @ 12V to maximise load switch power handling capability.
At 5V, RDS(ON) is 320mOhm typical.
Quiescent current is 25uA typical.
The AAT4285 is the first 12V device manufactured in AnalogicTech's ModularBCD process technology.
Unlike aging linear-IC legacy fabs or generic digital CMOS foundries, the ModularBCD process represents the first of a new generation of analogue, power and mixed-signal IC technologies especially created for high-tech wafer fabrication and optimised for manufacture in ex- DRAM fabs.
The new process makes single-chip, mixed-signal and system ICs both more technically and economically feasible by monolithically integrating fully isolated CMOS at 3, 5, and 12V with high-speed complementary bipolar transistors and robust 30V DMOS power devices without resorting to highly complex and expensive techniques such as epitaxy or high-temperature diffusion.
As a result, devices manufactured in ModularBCD offer higher efficiency, smaller size, and higher levels of integration than devices fabricated in traditional processes, and can better manage power and extend battery life in a wide range of mobile consumer electronics products such as cell phones, portable media players, tablet and laptop computers and digital cameras.
Specified across the -40 to +85C temperature range, the AAT4285 is available in a lead-free, 8-pin SC70JW package.
It sells for US $0.68 in 1,000 piece quantities.
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