General Description

The MAX1763 is a high-efficiency, low-noise, step-up DC-DC converter intended for use in battery-powered wireless applications. This device maintains exceptionally low quiescent supply current (110µA) despite its high 1MHz operating frequency. Small external components and a tiny package make this device an excellent choice for small hand-held applications that require the longest possible battery life.

Features

♦ Up to 94 Efficiency

♦ +0.7V to +5.5V Input Voltage Range

♦ 1.1V Guaranteed Startup Input Voltage

♦ Up to 1.5A Output

♦ Fixed 3.3V Output or Adjustable (2.5V to 5.5V)

♦ 1MHz PWM Synchronous-Rectified Topology

♦ 1µA Logic-Controlled Shutdown

♦ Analog Gain Block for Linear-Regulator or Low

Battery Comparator

♦ Adjustable Current Limit and Soft-Start

♦ 1.5W TSSOP Package Available

Applications

Digital Cordless Phones

PCS Phones

Wireless Handsets

Hand-Held Instruments

Palmtop Computers

Personal Communicators