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TC1174VUA Datasheet(PDF) 1 Page - Microchip Technology |
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TC1174VUA Datasheet(HTML) 1 Page - Microchip Technology |
1 / 12 page © 2002 Microchip Technology Inc. DS21363B-page 1 TC1174 Features • Extremely Low Supply Current (50 µA, Typ.) • Very Low Dropout Voltage • 300mA Output Current • Adjustable Output Voltages • 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 Package Type General Description The TC1174 is an adjustable output CMOS low dropout regulator. Total supply current is typically 50 µAat full load (20 to 60 times lower than in bipolar regulators). TC1174 key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 270mV at full load) and internal feed-forward compensation for fast response to step changes in load. Supply current is reduced to 0.05 µA (typical) and VOUT falls to zero when the shutdown input is low. The TC1174 incorporates both over temperature and over current protection. The TC1174 is stable with an output capacitor of only 1 µF and has a maximum output current of 300mA. Typical Application Part Number Output Voltage (V) Package Junction Temp. Range TC1174VOA Adjustable 8-Pin SOIC -40°C to +125°C TC1174VUA Adjustable 8-Pin MSOP -40°C to +125°C 8-Pin SOIC 1 2 3 4 VIN 5 6 7 8 NC SHDN VOUT GND NC ADJ 8-Pin MSOP 1 2 3 4 VIN 5 6 7 8 NC VOUT GND NC ADJ TC1174VOA TC1174VUA Bypass SHDN Bypass TC1174 1 2 3 4 5 6 7 8 VOUT VOUT CBYPASS 470pF (Optional) Shutdown Control (from Power Control Logic) GND NC ADJ VIN VIN NC NC Bypass SHDN R1 470K 470K R2 C1 1 µF VOUT = VREF x [— + 1] R1 R2 + 300mA CMOS LDO with Shutdown and VREF Bypass |
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