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SP6651AER Datasheet(PDF) 1 Page - Sipex Corporation |
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SP6651AER Datasheet(HTML) 1 Page - Sipex Corporation |
1 / 16 page 1 Date: 5/25/04 SP6651A High Efficiency 800mA Synchronous Buck Regulator © Copyright 2004 Sipex Corporation SP6651A FEATURES ■ DFN Package (3mm x 3mm) ■ Ultra-low 20µA Quiescent Current ■ 98% Efficiency Possible ■ 800mA Output Current ■ 2.7V to 5.5V Input Voltage Range ■ Output Adjustable Down to 1.0V ■ No External FET’s Required ■ 1.25A Inductor Peak Current Limit ■ 100% Duty Ratio Low Dropout Operation ■ 80µA Light Load Quiescent Current in Dropout ■ Over Temperature Protection ■ Logic Shutdown Control ■ Programmable UVLO and Adaptive Battery Low Output High Efficiency 800mA Synchronous Buck Regulator APPLICATIONS ■ PDA's ■ DSC's ■ MP3 Players ■ USB Devices ■ Point of Use Power The SP6651A is a 800mA synchronous buck regulator which is ideal for portable applications that use a Li-Ion or 3 cell alkaline/NiCD/NiMH input. The SP6651A’s proprietary control loop, 20µA light load quiescent current, and 0.3Ω power switches provide excellent efficiency across a wide range of output currents. As the input battery supply decreases towards the output voltage the SP6651A seamlessly transitions into 100% duty ratio operation further extending useful battery life. The SP6651A is protected against overload and short circuit conditions with a precise inductor peak current limit. Other features include programmable under voltage lockout and low battery detection, externally programmed output voltage down to 1.0V, logic level shutdown control, and 140°C over temperature shutdown. ® BLON VI VO D1 D0 22µF L1 10µH VOUT 800mA 2.7V to 5.5V Input 10Ω 1µF SP6651A PVIN BLON D1 D0 LX GND VOUT FB PGND VIN 22µF CIN CVIN COUT RVIN RF CF 22pF RI 200K 1M Ideal for portable designs powered with Li Ion battery TYPICAL APPLICATION SCHEMATIC DESCRIPTION SP6651A 10 Pin DFN 10 9 8 7 6 1 2 3 4 5 PVIN VIN BLON D1 D0 LX PGND GND VOUT FB Now Available in Lead Free Packaging |
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