TPS60400 - 具有可变切换频率的 60mA 充电泵电压反向器

TPS60400是TI德州仪器公司的一款电荷泵（无感应器）产品，TPS60400是具有可变切换频率的 60mA 充电泵电压反向器，本站介绍了TPS60400的封装应用图解、特点和优点、功能等，并给出了与TPS60400相关的TI元器件型号供参考。

TPS60400 - 具有可变切换频率的 60mA 充电泵电压反向器 - 电荷泵（无感应器） - DC/DC开关稳压器 - 德州仪器

产品特性

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

产品应用

LCD Bias
GaAs Bias for RF Power Amps
Sensor Supply in Portable Instruments
Bipolar Amplifier Supply
Medical Instruments
Battery-Operated Equipment

产品说明

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.

The TPS6040x can deliver a maximum output current of 60 mA with a typical conversion efficiency of greater than 90% over a wide output current range. Three device options with 20-kHz, 50-kHz, and 250-kHz fixed-frequency operation are available. TPS60400 comes with a variable switching frequency to reduce operating current in applications with a wide load range and enables the design with low-value capacitors.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS6040x	SOT-23 (5)	2.90 mm x 1.60 mm

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