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GENERAL DESCRIPTION

The TC1054 is a high accuracy (typically ±0.5) CMOS upgrade for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the TC1054’s CMOS construction eliminates wasted ground current, significantly extending battery life. Total supply current is typically 50?A at full load (20 to 60 times lower than in bipolar regulators!).

FEATURES

■ Zero Ground Current for Longer Battery Life

■ Very Low Dropout Voltage

■ Guaranteed 50mA Output

■ High Output Voltage Accuracy

■ Standard or Custom Output Voltages

■ Power-Saving Shutdown Mode

■ ERROR Output can be Used as a Low Battery Detector, or Processor Reset Generator

■ Over-Current and Over-Temperature Protection

■ Space-Saving SOT-23A-5 Package

■ Pin Compatible Upgrades for Bipolar Regulators

APPLICATIONS

■ Battery Operated Systems

■ Portable Computers

■ Medical Instruments

■ Instrumentation

■ Cellular/GSMS/PHS Phones

■ Linear Post-Regulators for SMPS

■ Pagers