MICROCHIP TC1173-2.5VUATR

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 out - of - 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. The TC1173 is a fixed output, low drop - out regulator. Unlike bipolar regulators, the TC1173’s supply current does not increase with load current. In addition, VOUT remains stable and within regulation over the entire 0mA to IOUTMAX operating load current range, (an important consideration in RTC and CMOS RAM battery back - up applications).

• Extremely Low Supply Current for Longer Battery Life
• Very Low Dropout Voltage
• 300mA Output Current
• 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

• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post - Regulators for SMPS
• Pagers