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SP6650

Sipex
Part Number SP6650
Manufacturer Sipex
Description High Efficiency 600mA Synchronous Buck Regulator Ideal for portable designs powered with Li Ion battery
Published Jun 7, 2005
Detailed Description ® SP6650 Ideal for portable designs powered with Li Ion battery High Efficiency 600mA Synchronous Buck Regulator FEATU...
Datasheet PDF File SP6650 PDF File

SP6650
SP6650

Overview
® SP6650 Ideal for portable designs powered with Li Ion battery High Efficiency 600mA Synchronous Buck Regulator FEATURES ■ 95% High Efficiency ■ Proprietary Control Loop ■ 2.
7V to 6.
5V Input Voltage Range ■ 3.
3V or Adjustable Output Voltage Range ■ 2% Output Voltage Accuracy ■ 600mA Output Current ■ 100% Duty Cycle Operation ■ Programmable Inductor Peak Current Limit (0.
95A or 0.
5A) ■ No External FET's Required ■ 3V Battery Low Indicator ■ 2.
7V Undervoltage Lockout ■ Shutdown Control ■ Small 10-Pin MSOP PVIN 1 VIN 2 BLON 3 ILIM 4 SHDN 5 10 LX SP6650 10 Pin MSOP 9 PGND 8 GND 7 VOUT 6 FB Now Available in Lead Free Packaging APPLICATIONS ■ PDA ■ CD Player ■ ADSL Modem ■ Digital Still Camera DESCRIPTION The SP6650 is ideal for portable applications that use a Li-Ion or 3 to 4 cell alkaline/NiCd/NiMH input.
The SP6650 extends battery life with it’s unique control loop scheme (patent pending), which maintains high efficiency levels (> than 90%) over a wide range of output currents.
Features such as Inductor peak current control, protects the power supply from overload or short circuit conditions, controls the startup current to prevent output overshoot and excessive battery drop, and gives the user more flexibility in choosing an appropriate coil to optimize solution cost, size and performance.
Other features include a dedicated pin for manual shutdown, a battery low indicator, and thermal protection.
TYPICAL APPLICATIONS CIRCUIT 2.
7-6.
5 VDC ® 1 RB 100kΩ PVIN VIN BLON ILIM SHDN LX PGND 10 9 8 7 6 L1 22µH 2 R1 10Ω 3 4 5 SP6650 GND VOUT FB VOUT 3.
3V or 1.
25V to 5.
0V R4 100kΩ C4 470pF C1 1µF C2 47µF R2 164k C3 47µF R3 100k Date: 5/25/04 SP6650 High Efficiency 600mA Synchronous Buck Regulator © Copyright 2004 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied.
Exposu...


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