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SP6648

Sipex
Part Number SP6648
Manufacturer Sipex
Description Ultra-low Quiescent Current / High Efficiency Boost Regulator
Published Jun 7, 2005
Detailed Description ® SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator FEATURES ■ Ultra-low 12µA Quiescent Current ■ 40...
Datasheet PDF File SP6648 PDF File

SP6648
SP6648

Overview
® SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator 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 VBATT LBI LBON RLIM SHDN 1 2 3 4 5 SP6648 10 Pin DFN 10 V OUT 9 LX 8 P GND 7 GND 6 FB Now Available in Lead Free Packaging APPLICATIONS ■ Camera Flash LED Driver ■ Wireless Mouse ■ PDA's ■ Pagers ■ Medical Monitors ■ Handheld Portable Devices ■ MP3 Players 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.
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.
TYPICAL APPLICATION CIRCUIT 500 10µH VBATT + 47µF 1 LBI LBON 2 3 4 SHDN 1.
87K VBATT LBI LBON RLIM VOUT 10 + 1µF 205K 47pF 47µF 3.
3VOUT Io (mA) 450 400 350 SP6648 LX 9 PGND 8 GND 7 FB 6 300 250 200 150 100 Vout=3.
3V, Ipk=0.
85A 50 0 Vout=5.
0V, Ipk=0.
85A 1.
5 2.
0 2.
5 3.
0 Vin (V) 3.
5 4.
0 4.
5 5 SHDN 124K 1.
0 Maximum Load Current in Operation Date: 7/19/04 SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator © Copyright 2004 Sipex Corporation 1 ...


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