LM2781 Datasheet Ultra-Low Ripple Switched Capacitor Voltage Inverter

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: March 2003 www.DataSheet4U.com LM2781 Ultra-Low Ripple Switched Capacitor Voltage Inverter LM2781 Ultra-Low Ripple Switched Capacitor Voltage.

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LM2781 ultra-low ripple switched capacitor voltage inverter by National Semiconductor (now Texas Instruments) - Datasheet Preview

Datasheet Details

Part number	LM2781
Manufacturer	National Semiconductor (now Texas Instruments)
File Size	185.83 KB
Description	Ultra-Low Ripple Switched Capacitor Voltage Inverter
Download	LM2781 Download (PDF)

General Description

The LM2781 is a charge pump that inverts an input voltage in the range of 1.8V to 5.5V to the corresponding output voltage of -1.8V to -5.5V.

With use of three or four low-cost external ceramic capacitors, the LM2781 can provide up to 50mA of output current.

The LM2781 operates at a 210kHz typical switching frequency to minimize supply current (0.7mA typ.).

Key Features

n Inverts Input Voltage n Ultra-Low Voltage Ripple and 8Ω Typical Output Resistance with Two Flying Capacitors n Output Resistance of 18Ω Using One Flying Capacitor n 210kHz (typ. ) Switching Frequency n 8-pin micro SMD Package (1.4mm x 1.4mm x 0.5mm).

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