LM2931中文资料带抑制功能的极低压降稳压器数据手册ST规格书

描述 Description

The LM2931 are very low drop regulators. The very low drop voltage and the low quiescent current make them particular suitable for low noise, low power applications and in battery-powered systems. In the 8-pin configuration (SO-8), fully compatible with the older L78L family, a shutdown logic control function is available. This means that when the device is used as a local regulator it is possible to put a part of the board in standby, decreasing total power consumption. Ideal for automotive applications, LM2931 is protected from reverse battery installations or 2 battery jumps. During the transient, such as a 60 V load dump, when the input voltage can exceed the specified maximum operating input voltage of 26 V, the regulator automatically shuts down to protect both internal circuitry and the load.

特性 Features

• AEC-Q100 qualified (DPAK only)
• Very low dropout voltage (90 mV typ. at 10 mA load)
• Low quiescent current (typ. 2.5 mA, at 100 mA load)
• Output current up to 100 mA
• Adjustable (from VOUT = 2.5 V only SO-8) and fixed (3.3 V and 5 V) output voltage version
• Internal current and thermal limit
• Load dump protection up to 60 V
• Reverse transient protection up to - 50 V
• Temperature range: - 40 to 125 °C
• Package available: TO-92, DPAK, SO-8 (with inhibit control)

简介

LM2931属于集成电路（IC）的稳压器-线性。由制造生产的LM2931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。