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, PDA’s, MP3 players, and other portable devices. The SP6648 combines the high delivery associated with PWM control, and the low quiescent current and excellent light-load efficiency of PFM control. The SP6648 features 12µA quiescent current, synchronous rectification, a 0.3Ωcharging 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 Voltage Range: 0.95V 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