TX8451（稳压IC）

Features

* Vin Range Up to 40V

* Output Range: 2.6V～5.0V

* Maximum Output Current: 500mA

* PSRR: 75dB@1KHz

* Dropout Voltage: 200mV@IOUT=100mA

* Ultra Low Quiescent Current: 2μA Typ.

* Output Voltage Tolerances of ±2% Over the Temperature Range

* Internal Thermal Overload Protection

* Built-in Foldback Current Limit

Applications

* E-meters, Water Meters and Gas Meters

* Cellphones, Radiophone, Digital Cameras

* Fire Alarm, Smoke Detector

* Appliances and White Goods

General Description

The TX8451 is ultra-low quiescent current regulator features and low dropout voltage. With 2μA quiescent current at no load. The TX8451 retains all of the features that are common to low dropout regulators including a low dropout PMOS pass device, foldback current limiter, and thermal shutdown.

The TX8451 has 40V maximum operating voltage, excellent load transient response, and - 40°C to 125°C operating temperature range, and ±2% output voltage tolerance over the entire output current, input voltage, and temperature range. The TX8451 regulators are available in standard SOT23-3L, SOT89-3 and TO92 packages.