MIC5239集成電路（IC）的線性+開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

General Description

The MIC5239 is a low quiescent current, μCap low-dropout regulator. With a maximum operating input voltage of 30V and a quiescent current of 23μA,it is ideal for supplying keep-alive power in systems with high voltage batteries.

Capable of 500mA output, the MIC5239 has a dropout voltage of only 350mV. It can provide high output current for applications such as USB. As a μCap LDO, the MIC5239 is stable with either a

ceramic or a tantalum output capacitor. It only requires a 3.3μF output capacitor for stability.

The MIC5239 includes a logic compatible enable input and an undervoltage error flag indicator. Other features of the MIC5239 include thermal shutdown, current limit, overvolt age shutdown, reverse-leakage protection, and reverse battery protection.

Features

? Ultra-low quiescent current (IQ = 23μA @IO = 100μA)

? Continuous 500mA output current

? Wide input range: 2.3V to 30V

? Low dropout voltage: 350mV @500mA

? ±1.0 initial output accuracy

? Stable with ceramic or tantalum output capacitor

? Logic compatible enable input

? Low output voltage error flag indicator

? Overcurrent protection

? Thermal shutdown

? Reverse-leakage protection

? Reverse-battery protection

? High-power SOIC-8, MSOP-8 and SOT-223 packages

Applications

? USB power supply

? Keep-alive supply in notebook and portable personal computers

? Logic supply from high voltage batteries

? Automotive electronics

? Battery-powered systems