AP2139中文資料single-ldos數(shù)據(jù)手冊Diodes規(guī)格書

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)

應(yīng)用 Application

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

簡介

AP2139屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由Diodes制造生產(chǎn)的AP2139穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應(yīng)用。