Sunnyvale, Calif.—Advanced Analogic Technologies' AAT1232, for single-cell portable products, delivers 100 mA at 24 volts for OLEDs, LCDs, and CCDs.
"Lighting and display functions can consume a significant portion of a lithium-ion battery's available power," explains Adolfo Garcia, Product Line Director. "The AAT1232 boost converter is tailor-made for these cost-sensitive applications by combining output voltage programming with high output-current drive in space-efficient packaging." The AAT1232 operates at 2 MHz; thus external inductors and capacitors are small, significantly reducing overall PCB footprint.
The designer can set output voltage dynamically by activing one of two reference levels using the device's SEL input. Optionally, the AAT1232 offers dynamic output voltage programming over a 16-step range using the company's single-wire S2Cwire (Simple Serial Control) interface, a lower cost and simpler alternative to traditional I2C-based addressing/programming methods.
The chip's "True Load Disconnect" feature will isolate the load from the power sources when the EN/SET input is pulled low, and so there is virtually no leakage current. The AAT1232 maintains 80 percent efficiency across a wide range of load currents down to 1 mA. The converter includes soft-start, cycle-by-cycle current limit, and short-circuit protection.
Click here for the device datasheet. The AAT1232, available in Pb-free, 16-pin, 3-by-4 mm TDFN and 12-pin TSOPJW packages, is priced at $1.05 each in 1,000-unit quantities.
AnalogicTech, 1-408-737-4600, www.analogictech.com