AP431R集成电路（IC）的电压基准规格书PDF中文资料

AP431R属于集成电路（IC）的电压基准。由美台半导体制造生产的AP431R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。

描述 Description

The AP431 and AP431A are 3-terminal adjustable precision shunt regulators with guaranteed temperature stability over the applicable extended commercial temperature range. The output voltage may be set at any level greater than 2.495V (VREF) up to 36V merely by selecting two external resistors that act as a voltage divider network. These devices have a typical output impedance of 0.2Ω. Active output circuitry provides very sharp turn-on characteristics, making these devices excellent improved replacements for Zener diodes in many applications.

特性 Features

• Precision reference voltage

• AP431: 2.495V ± 1

• AP431A: 2.495V ± 0.5

• Sink current capability: 200mA

• Minimum cathode current for regulation: 300μA

• Equivalent full-range temp coefficient: 30 ppm/oC

• Fast turn-on response

• Low dynamic output impedance: 0.2Ω

• Programmable output voltage to 36V

• Low output noise

• Lead Free packages: SOT25, SC59, SC59R, SOT89-3L and TO92-3L

• SOT23, SOT23R, SOT25, SC59, SC59R, SOP-8L, SOT89-3L, TO92-3L: Available in “Green” Molding Compound (No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)