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TC1054-3.0VCT Datasheet(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC1054-3.0VCT Datasheet(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 12 page TC1054 1 PRELIMINARY INFORMATION TC1054-01 6/12/97 50mA CMOS LDO WITH SHUTDOWN AND ERROR OUTPUT GENERAL DESCRIPTION The TC1054 is a high accuracy (typically ±0.5%) CMOS upgrade for older (bipolar) low dropout regulators. De- signed specifically for battery-operated systems, the TC1054’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!). TC1054 key features include ultra low noise operation, very low dropout voltage (typically 100mV at full load) and internal feed-forward compensation for fast response to step changes in load. An error output (ERROR) is asserted when the TC1054 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 TC1054 incorporates both over-temperature and over-current pro- tection. The TC1054 is stable with an output capacitor of only 1 µF and has a maximum output current of 50mA. For higher output current regulators, please see the TC1055 (IOUT = 100mA) regulator and TC1107, TC1108 (IOUT = 300mA) data sheets. 50mA CMOS LDO WITH SHUTDOWN AND ERROR OUTPUT TC1054 PIN CONFIGURATION 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 Output can be Used as a Low Battery Detector, or Processor Reset Generator s Over-Current and Over-Temperature Protection s Space-Saving SOT-23A-5 Package s Pin Compatible Upgrades for Bipolar Regulators APPLICATIONS s Battery Operated Systems s Portable Computers s Medical Instruments s Instrumentation s Cellular/GSMS/PHS Phones s Linear Post-Regulators for SMPS s Pagers TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices TYPICAL APPLICATION TC1054 (SOT-23A-5*) TOP VIEW 2 SHDN ERROR GND VOUT VIN 4 5 3 1 ORDERING INFORMATION Output Junction Part No. Voltage **(V) Package Temp. Range TC1054-2.5VCT 2.5 SOT-23A-5* – 40 °C to +125°C TC1054-2.7VCT 2.7 SOT-23A-5* – 40 °C to +125°C TC1054-3.0VCT 3.0 SOT-23A-5* – 40 °C to +125°C TC1054-3.3VCT 3.3 SOT-23A-5* – 40 °C to +125°C TC1054-5.0VCT 5.0 SOT-23A-5* – 40 °C to +125°C NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A) ** Other output voltages available. Please contact TelCom Semiconductor for details 1 µF Shutdown Control (from Power Control Logic) TC1054 VIN 1 2 34 5 VIN VOUT ERROR SHDN GND 1M VOUT ERROR NOTE: *SOT-23A-5 is equivalent to the EIAJ (SC-74A) |
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