General Description

The AS1326A/AS1326B are high-efficiency, high current, DC-DC step-up converters specifically designed for battery-powered wireless applications. Low quiescent supply current (65µA), high operating frequency (1MHz), and minimal external component requirements make these devices perfect for small hand-held applications.

Key Features

■ Up to 800mA Output

■ Constant-Frequency (1MHz) Operation

■ Up to 96 Efficiency

■ Input Range: 0.7 to 5.0V

■ Fixed Output: 3.3V

■ Adjustable Output: 2.5 to 5.0V

■ PWM Synchronous-Rectified Technology

■ Logic-Controlled Shutdown: 0.1µA

■ Synchronizable Switching Frequency

(0.5 to 1.2MHz)

■ Adjustable Current Limit

■ Adjustable Soft-Start

■ 10-pin TDFN (3.0mm x 3.0mm) Package

Applications

The devices are ideal for digital cordless phones. mobile

phones, wireless handsets, hand-held instruments,

PDAs, two-way pagers, and any battery-operated equipment.