UC29431中文资料精度可调节的并联稳压器数据手册TI规格书

描述 Description

The UC39431 is an adjustable shunt voltage regulator with 100mA sink capability. The architecture, comprised of an error amplifier and transconductance amplifier, gives the user separate control of the small signal error voltage frequency response along with a fixed linear transconductance. A minimum 3MHz gain bandwidth product for both the error and transconductance amplifiers assures fast response. In addition to external programming, the IC has threeinternal resistors that can be connected in six different configurations to provide regulated voltages of 2.82V, 3.12V, 5.1V, 7.8V, 10.42V, and 12.24V. A sister device (UC39432) provides access to the non-inverting error ampilifer input and reference, while eliminating the three internal resistors.

特性 Features

·Multiple On-Chip Programmable Reference Voltages·0.4% Initial Accuracy·0.7% Overall Reference Tolerance·2.2V to 36.0V Operating Supply Voltage and User Programmable Reference·36.0V Operating Supply Voltage·Reference Accuracy Maintained For Entire Range of Supply Voltage·Superior Accuracy and Easier Compensation for Optoisolator Application·Improved Architecture Provides a Known Linear Transconductance with a +5% Typical Tolerance

简介

UC29431属于集成电路（IC）的电压基准。由TI制造生产的UC29431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。