TPS60402DBVTG4

非稳压60毫安电荷泵电压逆变器 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER

Description

The TPS6040x family of devices generates an unregulated negative output voltage from an input voltage ranging from 1.6 V to 5.5 V. The devices are typically supplied by a preregulated supply rail of 5 V or 3.3 V. Due to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can also power them.

Only three external 1-µF capacitors are required to build a complete DC-DC charge pump inverter. Assembled in a 5-pin SOT-23 package, the complete converter can be built on a 50-mm2 board area. Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry.

Features

• Inverts Input Supply Voltage

• Up to 60-mA Output Current

• Only Three Small 1-µF Ceramic Capacitors Needed

• Input Voltage Range From 1.6 V to 5.5 V

• PowerSave-Mode for Improved Efficiency at Low Output Currents TPS60400

• Device Quiescent Current Typical 65 µA

• Integrated Active Schottky-Diode for Start-up Into Load

• Small 5-Pin SOT-23 Package

• Evaluation Module Available TPS60400EVM-178

Applications

• LCD Bias

• GaAs Bias for RF Power Amps

• Sensor Supply in Portable Instruments

• Bipolar Amplifier Supply

• Medical Instruments

• Battery-Operated Equipment