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TC1072-2.5VCH Datasheet(PDF) 7 Page - TelCom Semiconductor, Inc |
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TC1072-2.5VCH Datasheet(HTML) 7 Page - TelCom Semiconductor, Inc |
7 / 12 page TC1073 1 PRELIMINARY INFORMATION TC1073-01 6/5/97 100mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS GENERAL DESCRIPTION The TC1073 is a high accuracy (typically ±0.5%) CMOS upgrade for older (bipolar) low dropout regulators such as the LP2980. Designed specifically for battery-operated sys- tems, the TC1073’s 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!). TC1073 key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typi- cally 200mV 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 TC1073 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 TC1073 incorporates both over-tempera- ture and over-temeprature protection. The TC1073 is stable with an output capacitor of only 1 µF and has a maximum output current of 100mA. For higher output current versions, please see the TC1107, TC1108 (IOUT = 300mA) data sheets. TC1073 FEATURES s Zero Ground Current for Longer Battery Life! s Very Low Dropout Voltage s Guaranteed 100mA 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 100mA 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. 1 µF Shutdown Control (from Power Control Logic) TC1073 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** Package Temp. Range TC1073-2.5VCH 2.5V SOT-23A-6* – 40 °C to +125°C TC1073-2.7VCH 2.7V SOT-23A-6* – 40 °C to +125°C TC1073-3.0VCH 3.0V SOT-23A-6* – 40 °C to +125°C TC1073-3.3VCH 3.3V SOT-23A-6* – 40 °C to +125°C TC1073-5.0VCH 5.0V SOT-23A-6* – 40 °C to +125°C NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74) ** Other output voltages available. Please contact TelCom Semiconductor for details NOTE: *SOT-23A-6 is equivalent to the EIAJ (SC-74) TC1073 (SOT-23A-6*) TOP VIEW 1 3 5 4 6 2 SHDN ERROR GND VOUT Bypass VIN |
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