MICROCHIP TC2055-1.8VCTTR

The TC2054, TC2055 and TC2186 are high accuracy (typically ±0.4%) CMOS upgrades for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the devices’ total supply current is typically 55 μA at full load (20 to 60 times lower than in bipolar regulators). The devices’ key features include low noise operation, low dropout voltage – typically 45 mV (TC2054); 90 mV (TC2055); and 140 mV (TC2186) at full load - and fast response to step changes in load. An error output (ERROR) is asserted when the devices are out-of-regulation (due to a low input voltage or excessive output current). Supply current is reduced to 0.5 μA (maximum) and both VOUT and ERROR are disabled when the shutdown input is low. The devices also incorporate overcurrent and overtemperature protection. The TC2054, TC2055 and TC2186 are stable with a low esr ceramic output capacitor of 1 μF and have a maximum output current of 50 mA, 100 mA and 150 mA, respectively. This LDO Family also features a fast response time [60 μs typically] when released from shutdown.

• Low Supply Current 55 μA (Typical) for Longer Battery Life
• Low Dropout Voltage: 140 mV (Typical) @ 150 mA
• High Output Voltage Accuracy: ±0.4% (Typical)
• Standard or Custom Output Voltages
• Power-Saving Shutdown Mode
• ERROR Output Can Be Used as a Low Battery Detector or Processor Reset Generator
• Fast Shutdown Reponse Time: 60 μs (Typical)
• Overcurrent and Overtemperature Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin Compatible Upgrades for Bipolar Regulators
• Standard Output Voltage Options: 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, 5.0V

• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular / GSMS / PHS Phones
• Pagers