AP2138中文资料single-ldos数据手册Diodes规格书

描述 Description

The AP2138/2139 series are CMOS-based positive voltage regulator ICs. Each of these ICs consists of a voltage reference, an error amplifier, a resistor network for setting output voltage and a current limit circuit for current protection.

The difference between AP2138 and AP2139 is the AP2139 has an enable circuit with a quick discharge function. These ICs feature high output voltage accuracy, extremely low quiescent current and low dropout voltage which make them ideal for use in various power sources for portable applications.

The AP2138/2139 series have 1.2V, 1.4V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V and 4.0V fixed output voltage versions.

特性 Features

· Ultra-low Quiescent Current: 1.0μA Typical
· Output Voltages: 1.2V, 1.4V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V and 4.0V
· High Output Voltage Accuracy: ±2%
· Output Current: 250mA
· Low Dropout Voltage:
- 25mV Typical at IOUT=10mA and VOUT=3V
- 200mV Typical at IOUT=100mA and VOUT=3V
· Line Regulation: 6mV Typical
· Load Regulation: 25mV Typical
· Low Output Voltage Temperature Coefficient: ±100ppm/C
· Low Standby Current: 0.1μA Typical (AP2139)
· Active Quick Output Discharge (AP2139)
· Logic-control°C Enable (AP2139)

应用 Application

· Battery Powered Equipment
· Reference Voltage Sources
· Cameras, Video Cameras
· Portable AV Systems
· Mobile Phones
· Communication Tools
· Portable Games

简介

AP2138属于集成电路（IC）的线性+开关稳压器。由制造生产的AP2138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。