Description

The L4925 is a monolithic integrated 5 V voltage regulator with a very low dropout output and additional functions such as power-on reset and programmable reset delay time.

It is designed for supplying microcomputer controlled systems especially in automotive applications.

Features

■ Operating DC supply voltage range 6 V to 28 V

■ Transient supply voltage up to 40 V

■ Extremely low quiescent current

■ High precision output voltage

■ Output current capability up to 500 mA

■ Very low dropout voltage less than 0.6 V

■ Reset circuit sensing the output voltage

■ Programmable reset pulse delay with external capacitor

■ Thermal shutdown and short circuit protections

L4925属于集成电路（IC） > 线性 + 开关稳压器。意法半导体（ST）集团制造生产的L4925稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。