DESCRIPTION
The SP6648 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for single cell, dual cell alkaline and Li-Ion battery applications such as digital still cameras, PDAs, MP3 players, and other portable devices. The SP6648 combines the high-load efficiency associated with PWM control, with the low quiescent current and excellent light-load efficiency of PFM control. The SP6648 features 12μA quiescent current, synchronous rectification, a 0.3Ω charging switch, anti-ringing inductor switch, programmable low-battery detect, under-voltage lockout and programmable inductor peak current. The device can be controlled by a 1nA active LOW shutdown pin.

FEATURES
■ Ultra-low 12μA Quiescent Current
■ 400mA Output Current at 2.6V Input: 3.3VOUT
■ 94% Efficiency from 2 Cell to 3.3VOUT
■ Wide Input Operating Voltage: 0.85V to 4.5V
■ 3.3V Fixed or Adjustable Output
■ Integrated Synchronous Rectifier: 0.3Ω
■ 0.3Ω Switch
■ Anti-Ringing Switch Technology
■ Programmable Inductor Peak Current
■ Logic Shutdown Control
■ Under Voltage Lock-Out at 0.61V
■ Programmable Low-Battery Detect
■ Single or Dual Cell Alkaline
■ Small 10 pin DFN Package and Industry Standard 10 pin MSOP

APPLICATIONS
■ Camera Flash LED Driver
■ Wireless Mouse
■ PDAs
■ Pagers
■ Medical Monitors
■ Handheld Portable Devices
■ MP3 Players