Product category:
Power Supply ICs and Controllers
News Release from: Advanced Analogic Technologies | Subject: AAT1232
Edited by the Electronicstalk Editorial
Team on 31 August 2006
Boost convertor is made for budget
applications
Boost convertor with dynamic output voltage programming has space-efficient packaging to minimise system footprint.
When operating, lighting and display functions in portable products can consume a significant portion of a lithium-ion battery's available power Finding ways to optimise power dissipation and maintain display quality brings real value to the customer's application
This article was originally published on Electronicstalk on 16 Jun 2004 at 8.00am (UK)
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AnalogicTech's AAT1232 boost convertor is tailor-made for these cost-sensitive applications by combining output voltage programming with high output current drive in space-efficient packaging.
Rated at 24V at 100mA, the AAT1232 is the latest addition to AnalogicTech's rapidly growing family of boost convertors targeted primarily at cost-sensitive OLED, LCD, and CCD applications.
The device offers substantial output drive capability in an extremely compact footprint.
Operating at a switching frequency up to 2MHz, the AAT1232 reduces PCB footprint by using small-value external inductors and capacitors.
For example, the device operates with 2.2uH inductors that are approximately ten times smaller than many competitive boost conductors require.
Small TSOP and TDFN packages and fewer external components also help reduce system cost.
Configuring the AAT1232's operation is easy and dynamic.
Depending on the application, the system designer can select one of two internal feedback reference voltages using its SEL input.
In addition, the AAT1232 offers dynamic output voltage programming over a 16-step range using the company's patented single-wire S2Cwire (Simple Serial Control) interface, a lower cost and simpler alternative to traditional I2C-based addressing/programming methods.
A True Load Disconnect feature on the AAT1232 completely isolates the load from the power sources when the EN/SET input is pulled low.
This feature helps to minimise standby power dissipation and extends battery life by virtually eliminating leakage current.
The AAT1232 maintains 80% efficiency across a wide range of load currents - even down to 1mA.
The boost convertor also features a number of protection circuits, including integrated soft start, cycle-by-cycle current limit, and short-circuit protection.
The AAT1232 is available now in a Pb-free, 16-pin, 3 x 4mm TDFN package or a Pb-free, 12-pin TSOPJW package.
The device is specified over the -40 to +85C operating temperature range.
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