Texas InstrumentsLM2776DBVRCharge Pump

The LM2776DBVR is a switched capacitor inverter that can be used to create a negative voltage rail from a single supply. The LM2776DBVR has a voltage input range of 2.7 V to 5.5 V and will produce the same voltage output, but with an opposite polarity, and can source up to 200 mA while maintaining this voltage. The efficiency of the LM2776DBVR is greater than 90%. It has a switching frequency of 2 MHz and does not require an external inductor. The LM2776DBVR requires only three external capacitors, includes an enable signal, and integrates current limit and thermal protection circuitry. Housed in an SOT-23 package, the LM2776DBVR has an operating temperature range of -40°C to 85°C.

Drawings/Package

Key Features

• Up to 200-mA output current while retaining VIN output

• Operating voltage range of 2.7 V to 5.5 V

• Greater than 90% efficiency

• No external inductor needed

• Operating temperature range of -40°C to 85°C

Do you have to convert a direct current from one voltage level to another? The Texas Instruments LM2776DBVR charge pump voltage doubler gives you the ability to do just that. Its output produces a current of 0.2(Max) mA. With an output that has a voltage of -2.7 to -5.5 V, this is power management at its best. This product will be shipped in tape and reel packaging so that components can be mounted effectively. This device has a minimum operating supply voltage of 2.7 V and a maximum of 5.5 V. This inverting charge pump has an operating temperature range of -40 °C to 85 °C.