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SP6649EU Datasheet(PDF) 1 Page - Sipex Corporation |
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SP6649EU Datasheet(HTML) 1 Page - Sipex Corporation |
1 / 9 page 1 Rev:001 Date:11/20/03 SP6649 Ultra-low Quiescent Current, High Efficiency Boost DC-DC Regulator © Copyright 2002 Sipex Corporation SP6649 FEATURES ■ Ultra-low 12µA Quiescent Current ■ 700mA Output Current at 2.6VIN, 3.3VOUT ■ 94% Efficiency Possible ■ Wide Input Voltage Range: 0.85V to 4.5V ■ 3.3V Fixed Output and adjustable 2.5V to 5.0V Output Range ■ Internal Synchronous Rectifier for High Efficiency ■ 0.3 Charging Switch, 0.3 Synchro- nous Rectifier ■ Anti-Ringing Inductor Switch ■ Programmable Inductor Peak Current ■ Logic Shutdown Control ■ Under Voltage Lock-Out, 0.62V ■ Programmable Low Battery Detect ■ Small 10 pin MSOP Package Ultra-low Quiescent Current, High Efficiency Boost DC-DC Regulator APPLICATIONS ■ Digital Still Cameras ■ MP3 Players ■ PDA's ■ Pagers ■ Handheld Portable Devices ■ Medical Monitors DESCRIPTION The SP6649 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for single and dual cell alkaline, or Li-Ion battery applications such as digital still cameras, PDA’s, MP3 players, and other portable devices. The SP6649 combines the high delivery associated with PWM control, and the low quiescent current and excellent light-load efficiency of PFM control. The SP6649 features 12µA quiescent current, synchronous rectification, a 0.3 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. ® 1 2 3 4 5 10 9 8 7 6 VBATT LBI LBON RLIM SHDN VOUT LX PGND GND FB Top View 10 pin MSOP Tja=113 °C/W + C1 47uF L1 10uH VBATT C3 47pF LBI SHDN R1 205K + C2 47uF RLIM 1.87K 3.3Vout R2 124K C4 1uF SP6649 1 2 4 5 6 7 8 3 9 10 VBATT LBI RLIM SHDN FB GND PGND LBON LX VOUT LBON C1 = C2 = Kemet T49C476K010AS, L1 = Sumida CDRH5D28-100 R1 = 374K for 5VOUT Figure 1. Typical Application Circuit Figure 2. Maximum Load Current in Operation TBD |
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