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TC1072-3.0VCH Datasheet(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC1072-3.0VCH Datasheet(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 12 page TC1072 1 PRELIMINARY INFORMATION TC1072-01 6/16/97 50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS TC1072 FEATURES s Zero Ground Current for Longer Battery Life! s Very Low Dropout Voltage s Guaranteed 50mA Output s High Output Voltage Accuracy s Standard or Custom Output Voltages s Power-Saving Shutdown Mode s ERROR Ouput can be Used as a Low Battery Detector, or Processor Reset Generator s Bypass Input for Ultra-quiet Operation s Over-Current and Over-Temperature Protection s Space-Saving SOT-23A-6 Package s Pin Compatible Upgrades for Bipolar Regulators APPLICATIONS s Battery Operated Systems s Portable Computers s Medical Instruments s Instrumentation s Cellular / GSM / PHS Phones s Linear Post-Regulator for SMPS s Pagers GENERAL DESCRIPTION The TC1072 is a high accuracy (typically ±0.5%) CMOS upgrade for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the TC1072’s 50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS TYPICAL APPLICATION TelCom Semiconductor reserves the right to make changes in the circuitry and specifications ot its devices. CMOS construction eliminates wasted ground current, sig- nificantly extending battery life. Total supply current is typically 50 µA at full load (20 to 60 times lower than in bipolar regulators!). TC1072 key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typi- cally 100mV at full load) and internal feed-forward compen- sation for fast response to step changes in load. An error output (ERROR) is asserted when the TC1072 is 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 less than 1 µA, and both VOUT and ERROR are disabled when the shutdown input is low. The TC1072 incorporates both over-tempera- ture and over-current protection. The TC1072 is stable with an output capacitor of only 1 µF and has a maximum output current of 50mA. For higher output current versions, please see the TC1107, TC1108 and TC1073 (IOUT = 300mA) data sheets. 1 µF Shutdown Control (from Power Control Logic) TC1072 VIN 1 1M 2 3 4 6 5 VIN VOUT ERROR Bypass C BYPASS 470pF SHDN GND VOUT ERROR PIN CONFIGURATION ORDERING INFORMATION Output Junction Part No. Voltage **(V) Package Temp. Range TC1072-2.5VCH 2.5 SOT-23A-6* – 40 °C to +125°C TC1072-2.7VCH 2.7 SOT-23A-6* – 40 °C to +125°C TC1072-3.0VCH 3.0 SOT-23A-6* – 40 °C to +125°C TC1072-3.3VCH 3.3 SOT-23A-6* – 40 °C to +125°C TC1072-5.0VCH 5.0 SOT-23A-6* – 40 °C to +125°C NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74A) ** Other output voltages available. Please contact TelCom Semiconductor for details NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74A) TC1072 (SOT-23A-6*) TOP VIEW 1 3 5 4 6 2 SHDN ERROR GND VOUT Bypass VIN |
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