NATIONAL SEMICONDUCTOR LM2787 Low Noise Regulated Switched Capacitor Voltage Inverter in micro SMD handbook

The LM2787 is a CMOS negative regulated switched capacitor voltage inverter that provides a very low noise adjustable output for devices with an input voltage in the range of +2.7V to +5.5V. This product uses four low-cost capacitors to provide up to 10mA of output current. The regulated output for the LM2787 is adjustable between -1.5V and -5.2V. The LM2787 operates at a switching frequency of 260kHz (typical) to reduce output resistance and voltage ripple. With an operating current of only 400µA (charge pump power efficiency greater than 90% with most loads) and 0.05µA typical shutdown current, the LM2787 is ideal for cellular phone power amplifier bias and other low current, low noise negative voltage needs. The device comes in small 8-Bump micro SMD and thin micro SMD packages.


Brand: National

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Size: 234 KB

MD5 Checksum: 72CF11EA5EFC09CD5A5EE7E915BF16CA

Publication date: 11 April, 2012

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