Product category: Power Supply ICs and Controllers
News Release from: Advanced Analogic Technologies | Subject: AAT1162
Edited by the Electronicstalk Editorial Team on 28 June 2007
Convertor chip claims standby savings
DC/DC convertor reduces power usage for a wide range of 12V industrial applications as well as higher powered portable systems operating from dual-cell lithium-ion/polymer batteries.
Many applications, even in non-battery-powered systems, spend the majority of their life in a standby mode consuming only milliamps or microamps of current from their power supplies The extremely low quiescent current of the AnalogicTech AAT1162 DC/DC convertor significantly lowers standby mode current consumption in such system, thereby improving total power efficiency and enabling designers to more easily achieve green certifications
This article was originally published on Electronicstalk on 16 Jun 2004 at 8.00am (UK)
Related stories
Charge pumps boost white LED drive efficiency
A new generation of high efficiency charge pumps has been developed for white LED applications.
LDO handles big loads in portable kit
The AAT3239 is a new 500mA low-dropout (LDO) linear regulator for battery-operated portable applications.
The AAT1162 is the first in a family of synchronous step-down DC/DC convertors designed to operate from a 12V input and deliver up to 1.5A to 5V or lower outputs.
Consuming an extremely low 115uA quiescent current, the convertor reduces power usage for a wide range of 12V industrial applications as well as higher powered portable systems operating from dual-cell lithium-ion/polymer batteries.
The 12V step-down convertor operates across an input range of 4.0 to 13.2V and delivers up to 1.5A of current.
Further reading
Convertor boosts efficiency for single-cell uses
The AAT1151 synchronous buck convertor can be used in a wide variety of portable applications powered by a single-cell lithium ion/polymer battery.
LDO and microprocessor reset come together
A novel high-performance LDO linear regulator is combined with a low-current microprocessor reset in half the space of two discrete devices.
Output voltage is fixed or adjustable from 0.6V to the input level.
Efficiency levels range up to 96%.
A combined PWM/light load mode helps maximise efficiency over the entire load range.
Operating at a high 800kHz switching frequency, the AAT1162 uses relatively small external components, thereby minimising total solution size.
Soft start control limits input surge current and eliminates output voltage overshoot at startup.
The device also features current limit and overtemperature protection.
The AAT1162 is manufactured in analogueicTech'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 sise, 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 cellphones, portable media players, tablet and laptop computers and digital cameras.
The AAT1162 is qualified across the -40 to +85C temperature range and comes in a Pb-free, 16-pin, 3 x 4mm TDFN package.
• Advanced Analogic Technologies: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
