Supporting either two white LEDs requiring up to 750 mA each or one LED up to 1.5A, the AAT1271 and AAT1272 dual-channel boost converters feature the company’s proprietary AS2Cwire and industry-standard I2C interface, respectively. The two buses allow designers to modify drive current and, therefore, LED brightness. Available in 3 mm x 3 mm TDFN packages, they offer an alternative to larger xenon lamp packages. Both devices accept a 2.7V to 5.5V input voltage, employ a 2-MHz switching frequency, and can achieve up to 85% efficiency with 1-µH inductors. Other shared features include two channels capable of drive currents up to 750 mA each and separate flash enable and movie-mode enable inputs. The AAT1271 provides the proprietary single-wire AS2C interface while the AAT1272 offers the industry-standard two-wire I2C interface and the AAT1271 also adds a flash inhibit input. Price for either device is $1.49 each/1,000. ANALOGIC TECHNOLOGIES INC., Sunnyvale, CA. (408) 737-4600.