AS431H中文资料2-5v-reference-voltage-s数据手册Diodes规格书

描述 Description

The AS431H 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.The output voltage of AS431H can be set to any value between VREF (2.495V) and the corresponding maximum cathode voltage (36V).The AS431H precision reference is offered in two voltage tolerance: 0.5% and 1.0%.This IC is available in 2 packages: TO92 (Ammo Packing) and SOT23.

特性 Features

Programmable Precise Output Voltage from 2.495V to 36V
High Stability under Capacitive Load
Low Temperature Deviation: 5mV Typical
Low Equivalent Full-range Temperature Coefficient with 20PPM/°C Typical
Sink Current Capacity from 0.5mA to 100mA
Low Output Noise
Wide Operating Range of -40 to +125°C

应用 Application

Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference

简介

AS431H属于集成电路（IC）的电压基准。由Diodes制造生产的AS431H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。