UC285中文资料具有 -40°C 至 100°C 工作温度范围和反向电流保护功能的 5A、超低压降稳压器数据手册TI规格书

描述 Description

The UC385 is a low dropout linear regulator providing a quick response to fast load changes. Combined with its precision onboard reference, the UC385 excels at driving GTL and BTL buses. Due to its fast response to load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased when compared to standard LDO linear regulators.

Dropout voltage (VIN to VOUT) is only 490 mV maximum and 350 mV typical at 5-A load (0°C to 100°C).

The onboard bandgap reference is stable with temperature and scaled for a 1.2 V input to the internal power amplifier. The UC385 is available in fixed output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage defaults to 1.2 V.

特性 Features

• Fast Transient Response
• 10-mA to 5-A Load Current
• Short Circuit Protection
• Maximum Dropout of 500-mV at 5-A Load Current
• Separate Bias (VB) and VIN Pins
• Available in Adjustable or Fixed Output Voltages
• 5-Pin Package Allows Kelvin Sensing of Load Voltage
• Reverse Current Protection

简介

UC285属于集成电路（IC）的ACDC转换器离线开关。由TI制造生产的UC285AC DC 转换器，离线开关该系列是元器件级控制产品，用于构建将交流市电转换为直流电（通常电压大幅降低）的设备。集成和未集成系统主要开关元件的器件均包括在内。由于高输入输出电压比，以及此类系统中通常需要隔离，这些器件通常与外部变压器配合使用。尽管通常使用定制变压器来实现此用途，但也有许多专门用于此用途的库存产品，请参见“开关转换器，SMPS 变压器”标题。