L4993D集成电路（IC）的线性+开关稳压器规格书PDF中文资料

L4993D属于集成电路（IC）的线性+开关稳压器。由意法半导体集团制造生产的L4993D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。

Description

The L4993 is a monolithic integrated 5V Voltage regulator with a low drop voltage at currents up to 150mA.The output voltage regulating element consists in a p-channel MOS and the regulation is performed regardless of input voltage transients up to 40V. The high precision of the output voltage is obtained with a pre-trimmed reference voltage.

■ Operating DC supply voltage range 5.6V to 31V

■ Reset circuit sensing the output voltage down to 1V

■ Programmable reset pulse delay with external capacitor

■ Watchdog

■ Programmable watchdog timer with external capacitor

■ Enable input for enabling/disabling the watchdog functionality

■ Thermal shutdown and short circuit protection

■ Wide temperature range (Tj = -40°C to 150°C)