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)