General Description

The MAX1722/MAX1723/MAX1724 compact, high-efficiency, step-up DC-DC converters are available in tiny, 5-

pin thin SOT23 packages. They feature an extremely low 1.5µA quiescent supply current to ensure the highest possible light-load efficiency. Optimized for operation from one to two alkaline or nickel-metal-hydride (NiMH) cells, or a single Li+ cell, these devices are ideal for applications where extremely low quiescent current and ultra-small size are critical.

Features

♦ Up to 90% Efficiency

♦ No External Diode or FETs Needed

♦ 1.5µA Quiescent Supply Current

♦ 0.1µA Logic-Controlled Shutdown

♦ ±1% Output Voltage Accuracy

♦ Fixed Output Voltage (MAX1724) or Adjustable

Output Voltage (MAX1722/MAX1723)

♦ Up to 150mA Output Current

♦ 0.8V to 5.5V Input Voltage Range

♦ 0.91V Guaranteed Startup (MAX1722/MAX1724)

♦ Internal EMI Suppression (MAX1722/MAX1724)

♦ Thin SOT23-5 Package (1.1mm max Height)

Applications

Pagers

Remote Controls

Remote Wireless

Transmitters

Personal

Medical Devices

Digital Still Cameras

Single-Cell Battery

Powered Devices

Low-Power Hand-Held

Instruments

MP3 Players

Personal Digital

Assistants (PDA)