300mA, Low Iq, LDO with foldback current


TPL700 Series.pdf

Replaced By TPL730 

The device has better electrical characteristics and is package compatible.

3PEAK does not recommend using this part in a new design. 

This product continues to be in production for existing customers by 30/Sep/2019


  • Low Dropout Voltage:

    * 170mV at 200mA

    * 30mV at 300mA

  • Maximum Output Current: 300mA

  • Input Voltage Range: 2.1V to 5.5V

  • ±2% Accuracy Overall Operating Conditions

  • Low Quiescent and Shutdown Current

  • Foldback Current Limit and Overheat Protection

  • Stable with Effective Capacitance of 1 μF

  • Soft-start Limits Input Current Surge During Enable

  • Available in Fixed-Output Voltages 1.8V/2.8V/3.0V/3.3V

  • Temperature range:-40°C+85°C

  • Available in 3-mm × 3-mm SOT23-5 package and SC70-5 package


  • POS

  • Handheld Devices Including Medical Handhelds

  • U-Key

  • Lower Cost Industrial and Instrumentation

  • Battery Device


TPL700 series product is a high performance and low dropout linear regulator. Current output capability is 300mA.TPL700 series product support low quiescent current and high-PSRR, especially for high frequency. TPL700 series can be stable with output capacitance of 1μF to 10μF with ESR of up to 100mΩ.

The TPL700 series have a high PSRR at high frequency and PSRR can be about 70dB at 2M frequency point. This feature makes TPL700 series very suitable for power-sensitive applications with high noise from front stage power supply.When coupled with a no load quiescent current of 35μA (typical) and 0.1μA shutdown current, the TPL700 series is an ideal choice for portable or wireless equipment. Current-limit and thermal overload protection circuits prevent damage under these conditions. The TPL700 series also includes an internal pull-down resistor on the EN input.

The TPL700 series comes in many fixed voltage options with ±2% output voltage accuracy over temperature, line and load. Other output voltage options are available on request.The TPL700 series is guaranteed over the temperature range of -40°C to +85°C. The TPL700 series of LDOs are available in 3-mm*3-mm SOT23-5 package and SC70-5 package.


标题 类型 时间 媒体
【Technical Document】简析LDO的输出电容 LDO 2017-12-29 3PEAK
【Technical Document】浅谈LDO中应用保护措施 LDO 2017-12-29 3PEAK


标题 类型 时间 媒体






样片申请 选型手册