Advanced Analogic Technologies Inc. (AnalogicTech, Sunnyvale, CA), a developer of power management solutions, announced a new 500 mA low dropout (LDO) linear regulator for battery-operated portable applications. Featuring fast line and load transient response, high-speed device turn-on and shutdown, and a good power supply rejection ratio (PSRR), the AAT3239 is suitable for high-current loads in hand-held portable electronics.
To help extend the battery life of portable devices, quiescent current is a low 70 µA. In addition, the AAT3239 features a low-power shutdown. A reference bypass pin on the AAT3239 enhances PSRR performance and output noise by supporting the connection of a small external capacitor from the device's reference output to ground. At 300 mA, the AAT3239's dropout voltage is typically 400 mV and accuracy is ±1.5%. Integrated output, short-circuit protection and a thermal shutdown circuit protect the device in extreme operating conditions.
The AAT3239 comes in a compact TSOPJW-8 package in factory-programmed voltages of 1.5 V, 1.85 V or 3.3 V. Pricing starts at $0.78 each in 1,000-unit quantities.
