TC1072屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由美國微芯科技公司制造生產(chǎn)的TC1072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。

General Description

The TC1072 and TC1073 are high accuracy (typically ±0.5) CMOS upgrades for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the devices’ CMOS construction eliminates wasted ground current, significantly extending battery life. Total supply current is typically 50 μA at full load (20 to 60 times lower than in bipolar regulators).

The devices’ key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 85 mV, TC1072 and 180 mV, TC1073 at full load) and fast response to step changes in load. An error output (ERROR) is asserted when the devices are out-of-regulation (due to a low input voltage or excessive output current). ERROR can be used as a low battery warning or as a processor RESET signal (with the addition of an external RC network). Supply current is reduced to 0.5 μA (max) and both VOUT and ERROR are disabled when the shutdown input is low. The devices incorporate both overtemperature and overcurrent protection.

The TC1072 and TC1073 are stable with an output capacitor of only 1 μF and have a maximum output current of 50 mA, and 100 mA, respectively. For higher output current versions, please see the TC1185, TC1186, TC1187 (IOUT = 150 mA) and TC1107, TC1108 and TC1173 (IOUT = 300 mA) data sheets.

Features:

? 50 μA Ground Current for Longer Battery Life

? Very Low Dropout Voltage

? Choice of 50 mA (TC1072) and 100 mA (TC1073) Output

? High Output Voltage Accuracy

? Standard or Custom Output Voltages

? Power-Saving Shutdown Mode

? ERROR Output Can Be Used as a Low Battery

Detector or Processor Reset Generator

? Bypass Input for Ultra Quiet Operation

? Overcurrent and Overtemperature Protection

? Space-Saving 6-Pin SOT-23 Package

? Pin Compatible Upgrades for Bipolar Regulators

? Standard Output Voltage Options:

- 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, 3.6V, 4.0V, 5.0V

? Other output voltages are available. Please

contact Microchip Technology Inc. for details.

Applications:

? Battery Operated Systems

? Portable Computers

? Medical Instruments

? Instrumentation

? Cellular/GSM/PHS Phones

? Linear Post-Regulators for SMPS

? Pagers