LDK220数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

The LDK220 is a low drop voltage regulator, which provides a maximum output current of 200 mA from an input voltage in the range of 2.5 V to 13.2 V, with a typical dropout voltage of 100 mV.

A ceramic capacitor stabilizes it on the output.

The very low drop voltage, low quiescent current and low noise make it suitable for battery-powered applications.

The enable logic control function puts the LDK220 in shutdown mode allowing a total current consumption lower than 1 µA.

The device also includes a short-circuit constant current limiting and thermal protection.

特性 Features

• Input voltage from 2.5 to 13.2 V
• Very low-dropout voltage (100 mV typ. @ 100 mA load)
• Low quiescent current (typ. 55 µA, 1 µA in off mode)
• Low noise
• Output voltage tolerance: ± 2.0% @ 25 °C
• 200 mA guaranteed output current
• Wide range of output voltages available on request: fixed from 1.2 V to 12 V with 100 mV step and adjustable
• Logic-controlled electronic shutdown
• Output discharge function
• Compatible with ceramic capacitor COUT = 1 µF
• Internal current and thermal limit
• Available in SOT23-5L, SOT323-5L, SOT-89 and DFN6-1.2x1.3 packages
• Temperature range: -40 °C to 125 °C

简介

LDK220属于集成电路（IC）的线性+开关稳压器。由制造生产的LDK220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。