TC1173

TC1173 300mA CMOS LDO with Shutdown, ERROR Output and Bypass FEATURES s s s s s s s s s Extremely Low Supply Current for Longer Battery Life! Very Low Dropout Voltage Guaranteed 300mA Output Standard or Custom Output Voltages ERROR Output Can be Used as a Low Battery Detector or Processor Reset Generator Power-Saving Shutdown Mode Bypass Input for Ultra-Quiet Operation Over-Current and Over-Temperature Protection Space-Saving MSOP Package Option GENERAL DESCRIPTION The TC1173 is a precision output (typically ±0.5%) CMOS low dropout regulator. Total supply current is typically 50µA at full load (20 to 60 times lower than in bipolar regulators!). TC1173 key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 240mV at full load) and internal feed-forward compensation for fast response to step changes in load. An error output (ERROR) is asserted when the TC1173 is outof-regulation (due to a low input voltage or excessive output current). ERROR can be set as a low battery warning or as a processor RESET signal (with the addition of an external RC network). Supply current is reduced to 0.05µA (typical) and VOUT and ERROR fall to zero when the shutdown input is low. The TC1173 incorporates both over-temperature and over-current protection. The TC1173 is stable with an output capacitor of only 1µF and has a maximum output current of 300mA. APPLICATIONS s s s s s s s Battery-Operated Systems Portable Computers Medical Instrume...