描述 Description

The MC78PC00 are a series of CMOS LDO linear voltage regulators with high output voltage accuracy, low supply current, low dropout voltage, and high Ripple Rejection. Each of these linear voltage regulators consists of an internal voltage reference, an error amplifier, resistors, a current limiting circuit and achip enable circuit. The dynamic Response to line and load is fast, which makes these products ideally suited for use in hand-held communication equipment. The MC78PC00 series of Low Dropout Linear Voltage Regulators are housed in the SOT-23 5 lead package, for maximum board space saving.

特性 Features

Ultra-Low Supply Current: typical 35 mA in ON mode with no load.
Standby Mode: typical 0.1 mA.
Low Dropout Voltage: typical 0.2 V @ IOUT = 100 mA.
High Ripple Rejection: typical 70 dB @ f = 1 kHz.
Low Temperature-Drift Coefficient of Output Voltage: typical +/- 100 ppm/°C.
Excellent Line Regulation: typical 0.05%/V.
High Accuracy Output Voltage: +/-2.0%.
Fast Dynamic Response to Line and Load.
Small Package: SOT-23 5 leads.
Built-in Chip Enable circuit (CE input pin).
Similar Pinout to the LP2980/1/2 and MIC5205.
Pb-Free Package May be Available. The G-Suffix Denotes a Pb-Free Lead Finish

應用 Application

Power source for cellular phones (GSM, CDMA, TDMA), CordlessPhones (PHS, DECT) and 2-way radios.Power source for domestic appliances such as cameras, VCRs andcamcorders.Power source for battery-powered equipment.

簡介

MC78PC25屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由制造生產(chǎn)的MC78PC25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用。