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SP682EP Datasheet(PDF) 1 Page - Sipex Corporation |
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SP682EP Datasheet(HTML) 1 Page - Sipex Corporation |
1 / 8 page 1 Date: 5/20/04 SP682 Micro Power Inverting Charge Pump © Copyright 2004 Sipex Corporation ■ Low Power Voltage Conversion ■ +2.4V to +5.5V Input Range ■ 99% Voltage Conversion Efficiency ■ Typical 60µA Supply Current ■ Requires Only Three External Capacitors ■ Includes Low Power Shutdown Option ■ Ideal in Portable Applications Such As Handheld Instruments Cellular Phones Personal Digital Assistants Laptops and Notebooks ■ Pin Compatible Upgrade to Microchip's TC682 SP682 Micro Power Inverting Charge Pump TYPICAL APPLICATION CIRCUIT Corporation APPLICATIONS The SP682 is a monolithic charge pump voltage converter that produces a doubled, negative voltage from a single positive supply. The SP682 charge pump outputs a –10V voltage from a +5V input. Three external charge pump capacitors are required to support the voltage conversion and voltage doubling process. An internal oscillator generates a 12kHz clock which cycles the internal switching that charges the storage and transfer capacitors. The charge pump architecture is fabricated using a low power BiCMOS process technology. The SP682 charge pump is ideal for low power applications requiring a typical +3V battery source such as a lithium cell. Typical applications are handheld instruments, notebook and laptop computers, cellular phones, and data acquisition or GP systems. The SP682 is packaged in either 8-pin NSOIC, 8-pin MSOP for surface mount applications, and 8 Pin PDIP. +2.4V to +5V 1µF + GND VOUT 6 VCC 4 SP682 C1+ C1– C2+ C2– C1 C2 7 1 3 5 2 COUT SD 8 VOUT - ■ LCD Display ■ Negative bias supply for op amps ■ Serial interface protocol circuits DESCRIPTION 1 2 3 4 5 6 7 8 C1- SP682 8 Pin MSOP GND VOUT C2+ SD C1+ C2- VCC |
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