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TC1173VOA Datasheet(PDF) 1 Page - Microchip Technology |
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TC1173VOA Datasheet(HTML) 1 Page - Microchip Technology |
1 / 12 page © 2002 Microchip Technology Inc. DS21362B-page 1 TC1173 Features • Extremely Low Supply Current for Longer Battery Life • Very Low Dropout Voltage • 300mA Output Current • Standard or Custom Output Voltages • ERROR Output Can Be Used as a Low Battery Detector or Processor Reset Generator • Power Saving Shutdown Mode • Bypass Input for Ultra Quiet Operation • Over Current and Over Temperature Protection • Space-Saving MSOP Package Option Applications • Battery Operated Systems • Portable Computers • Medical Instruments • Instrumentation • Cellular/GSM/PHS Phones • Linear Post-Regulators for SMPS • Pagers Device Selection Table NOTE: xx indicates output voltages Available Output Voltages: 2.5, 2.8, 3.0, 3.3, 5.0. Other output voltages are available. Please contact Microchip Technology Inc. for details. General Description The TC1173 is a precision output (typically ±0.5%) CMOS low dropout regulator. Total supply current is typically 50 µA at full load (20 to 60 times lower than in bipolar regulators). TC1173 key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 240mV at full load) and internal feed-forward compensation for fast response to step changes in load. An error output (ERROR) is asserted when the TC1173 is out-of-regulation (due to a low input voltage or excessive output current). ERROR canbeset as a low battery warning or as a processor RESET signal (with the addition of an external RC network). Supply current is reduced to 0.05 µA (typical) and VOUT and ERROR fall to zero when the shutdown input is low. The TC1173 incorporates both over temperature and over current protection. The TC1173 is stable with an output capacitor of only 1 µF and has a maximum output current of 300mA. Typical Application Package Type Part Number Package Junction Temp. Range TC1173-xxVOA 8-Pin SOIC -40°C to +125°C TC1173-xxVUA 8-Pin MSOP -40°C to +125°C TC1173 1 2 3 45 6 7 8 VOUT VOUT CBYPASS 470pF (Optional) Shutdown Control (from Power Control Logic) C1 1 µF GND NC Bypass VIN VIN NC SHDN + ERROR R3 1M ERROR 8-Pin SOIC 1 2 3 4 VIN 5 6 7 8 NC VOUT GND NC Bypass TC1173VOA 8-Pin MSOP 1 2 3 4 VIN 5 6 7 8 NC VOUT GND NC Bypass SHDN TC1173VUA ERROR SHDN ERROR 300mA CMOS LDO with Shutdown ERROR Output and Bypass |
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