AP431i中文资料2-5v-reference-voltage-s数据手册Diodes规格书

描述 Description

The AP431i is a three-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features sharp turn-on characteristics, low temperature coefficient and low output impedance, which make it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators.

\tAP431i has the same electrical specifications as the industry standard 431 except that it features a low minimum cathode current for regulation. The typical value of 50μA makes the parts ideal for very low power dissipation applications.

特性 Features

Low minimum operating current - Minimise operating current to save power dissipation
\t
\t\tLow reference current - Give more flexibility to divide resistor select and reduce the output voltage error
\t
\t\tBetter deviation of reference voltage over full temperature range - Low output variation over temperature
\t
\t\tHigh reference voltage accuracy - Guarantee the output accuracy

应用 Application

Charger
\t
\t\tVoltage Adapter
\t
\t\tSwitching Power Supply
\t
\t\tGraphic Card
\t
\t\tPrecision Voltage Reference

简介

AP431i属于集成电路（IC）的电压基准。由Diodes制造生产的AP431i电压基准产品属于基准电压源系列，可通过相对较不稳定的电源提供稳定的电势，电压值始终保持恒定，以便在测量、控制和类似应用中用作比较的标准。其功能行为可能与用于大功率调节的线性稳压器相似，但基准电压源器件却不适合用于此类用途。用作比较标准时，若输出电流容量或实际负载电流增大，其性能通常会降低。