General Description

The TC1188 and TC1189 are fixed output, low dropout linear regulators that operate from a 2.7V to 6.0V input voltage source. The output is capable of delivering up to 120 mA while consuming only 50 μA of quiescent current. The low dropout voltage, 120 mV, make the TC1188 and TC1189 good choices for battery powered applications. Integrated over-current and over-temperature protection features provide for a fault tolerant solution.

The TC1189 includes an output voltage auto discharge feature. When shutdown, the TC1189 will automatically discharge the output voltage using an internal N-Channel MOSFET switch. Fixed output voltage options for the TC1188/TC1189 are: 1.80V, 2.80V, 2.84V and 3.15V. Both the TC1188 and TC1189 are available in SOT23-5 packages.

Features

? Input Voltage Range: 2.7 V to 6.0 V

? 120 mA Output Current

? Low Supply Current: 50 μA, (typical)

? Low Dropout Voltage: 110 mV, (typical at 100 mA)

? Fast Turn-On from Shutdown: 140 μsec (typical)

? Low Output Noise

? Over-Current and Over-Temperature Protection

? Low Power Shutdown Mode

? Auto Discharge of Output Capacitor (TC1189)

Applications

? Battery Powered Systems

? Portable Computers

? Medical Instruments

? Cellular, Cordless Phones

? PDAs

? Pagers

TC1188屬于集成電路（IC） > 線性 + 開關穩(wěn)壓器。微芯科技股份有限公司制造生產的TC1188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。