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LM2685 - Dual Output Regulated Switched Capacitor Voltage Converter

Datasheet Summary

Description

The LM2685 CMOS charge-pump voltage converter operates as an input voltage doubler, +5V regulator and inverter for an input voltage in the range of +2.85V to +6.5V.

5V.

Features

  • n n n n n n n +5V regulated output Inverts V05(+5V) to VNEG(.
  • 5V) Doubles input supply voltage TSSOP-14 package 80% typical conversion efficiency at 25mA Input voltage range of 2.85V to 6.5V Independent shutdown control pins.

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Datasheet Details

Part number LM2685
Manufacturer National Semiconductor
File Size 244.02 KB
Description Dual Output Regulated Switched Capacitor Voltage Converter
Datasheet download datasheet LM2685 Datasheet
Additional preview pages of the LM2685 datasheet.

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LM2685 Dual Output Regulated Switched Capacitor Voltage Converter May 2000 LM2685 Dual Output Regulated Switched Capacitor Voltage Converter General Description The LM2685 CMOS charge-pump voltage converter operates as an input voltage doubler, +5V regulator and inverter for an input voltage in the range of +2.85V to +6.5V. Five low cost capacitors are used in this circuit to provide up to 50mA of output current at +5V ( ± 5%), and 15mA at −5V. The LM2685 operates at a 130 kHz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 800µA (operating efficiency greater than 80% with most loads) and 6µA typical shutdown current, the LM2685 is ideal for use in battery powered systems. The device is in a small 14-pin TSSOP package.
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