LD39300PT25-R集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LD39300PT25-R属于集成电路（IC）的线性+开关稳压器。由意法半导体集团制造生产的LD39300PT25-R稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

描述 Description

The LD39300 is a fast ultra low drop linear regulator which operates from 2.5V to 6V input supply.

A wide range of output options are available. The low drop voltage, low noise, and ultra low quiescent current make it suitable for low voltage microprocessor and memory applications. The device is developed on a BiCMOS process which allows low quiescent current operation independently of output load current.

Feature summary

■ 3A Guaranteed output current

■ Ultra low dropout voltage (200mV typ. @ 3A load, 40mV typ. @600mA load)

■ Very low quiescent current (1.2mA typ. @ 3A load, 1µA max @ 25°C in off mode)

■ Logic-controlled electronic shutdown

■ Current and thermal internal limit

■ ±1.5 Output voltage tolerance @ 25°C

■ Fixed and ADJ output voltages: 1.22V, 1.8V, 2.5V, 3.3V, ADJ. (*see order code)

■ Temperature range: -40 to 125°C

■ Fast dynamic response to line and load changes

■ Stable with ceramic capacitor (see paragraph 7.1, 7.2, 7.3)

■ Available in PPAK and DPAK

Typical application

■ Microprocessor power supply

■ DSPs power supply

■ Post regulators for switchin suppliers

■ High efficiency linear regulator