Description

The CAT6218 is a 300 mA CMOS low dropout regulator that provides fast response time during load current and line voltage changes.

The quick?start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn?on time of just 150 μs.

With zero shutdown current and low ground current of 55 μA typical, the CAT6218 is ideal for battery?operated devices with supply voltages from 2.3 V to 5.5 V. An internal under voltage lockout circuit disables the output at supply voltages under 2.1 V typical.

Features

? Guaranteed 300 mA Output Current

? Low Dropout Voltage of 180 mV Typical at 300 mA

? Stable with 1 μF Ceramic Output Capacitor

? External 10 nF Bypass Capacitor for Low Noise

? Quick?start Feature

? No?load Ground Current of 55 μA Typical

? Full?load Ground Current of 80 μA Typical

? ±1.0 Initial Accuracy (VOUT ≥ 2.0 V)

? ±2.0 Accuracy Over Temperature (VOUT ≥ 2.0 V)

? “Zero” Current Shutdown Mode

? Fold?back Current Limit and Under?voltage Lockout

? Thermal Protection

? Thin SOT23?5 Package

? These Devices are Pb?Free, Halogen Free/BFR Free and are RoHS Compliant

Applications

? Cellular Phones

? Battery?powered Devices

? Consumer Electronics

CAT6218屬于集成電路（IC） > 線性 + 開關(guān)穩(wěn)壓器。安森美半導(dǎo)體公司制造生產(chǎn)的CAT6218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(fù)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(gè)最小量，并且在工作時(shí)會(huì)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。