AATI Announces New Power Management IC Family

Advanced Analogic Technologies Inc. (AATI, Sunnyvale, CA) announced a new family of advanced power management ICs. Featuring low quiescent current and a wide range of optional features, the new devices offer portable system designers the opportunity to increase system reliability while reducing power consumption and component count. The AAT3520/2/4, AAT3526/7/8 and AAT3532 product lines are suitable for use in notebook computers, cellular phones, portable electronics devices and embedded systems.

The AAT3520/2/4 line is guaranteed to operate down to 1.2V and features a low quiescent current of 1µA, typical, which monitors the system power supply and asserts a reset signal for a minimum of 150ms after Vcc has risen above a fixed threshold. Propagation delay time for the reset pulse is less than 20µs. Detection threshold is accurate to ±1.5 percent. Devices are available at fixed thresholds from 2.2V to 4.6V. Output options include push-pull active high, push-pull active low and open drain. The AAT3520/2/4 ICs come in a SOT-23 package.

The AAT3526/7/8 ICs add the ability to initialize a manual reset via a de-bounced pin. These devices support thresholds of 1.2V to 4.6V and come with the same three output options offered with the AAT3520/2/4 line. Accuracy is ±1.5 percent. The AAT3526/7/8 ICs are available in a SOT143 package.

The AAT3532 adds a programmable watchdog timer, which holds the microprocessor in a reset condition for a minimum of 250ms while Vcc is established to ensure correct system startup. Manual reset is also supported through a de-bounced input pin. The AAT3532 features a low quiescent current of 23µA, typical, and is available in an eight-pin SOP package.

In 1,000-unit quantities, the AAT3520/2/4 is $0.32, the AAT3526/7/8 is $0.42 and the AAT3532 is $0.75. All products are available now.