TPS60400 具有可变切换频率的 60mA 充电泵电压反向器 | 德州仪器 TI.com.cn

TPS60400
此产品已上市,且可供购买。 可提供某些产品的较新替代品。
具有可变切换频率的 60mA 充电泵电压反向器

具有可变切换频率的 60mA 充电泵电压反向器 - TPS60400
数据表
 

备选器件推荐

  • TPS62120  -  The device has similar functionality with a wider input voltage range, higher output current, and output voltage regulation. See SLVA478.

描述

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.

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

参数

与其它产品相比 电荷泵(无电感) 邮件 下载到电子表格中
Part number 立即下单 Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Operating temperature range (C) Type Rating Package Group
TPS60400 立即下单 1.6     5.5     -5.25     -1.6     0.06     1     30     350     0.125     Light Load Efficiency Mode
Synchronous Rectification    
-40 to 85     Charge Pump     Catalog     SOT-23 | 5    
TPS60401 立即下单 1.6     5.5     -5.25     -1.6     0.06     1     13     25     0.07     Light Load Efficiency Mode
Synchronous Rectification    
-40 to 85     Charge Pump     Catalog     SOT-23 | 5    
TPS60402 立即下单 1.6     5.5     -5.25     -1.6     0.06     1     30     80     0.275     Light Load Efficiency Mode
Synchronous Rectification    
-40 to 85     Charge Pump     Catalog     SOT-23 | 5    
TPS60403 立即下单 1.6     5.5     -5.25     -1.6     0.06     1     150     400     0.4     Light Load Efficiency Mode
Synchronous Rectification    
-40 to 85     Charge Pump     Catalog     SOT-23 | 5