器件名称: TC2054
功能描述: 50mA, 100mA, and 150mA CMOS LDOs with Shutdown and Error Output
文件大小: 519.83KB 共16页
简 介:TC2054/2055/2186
50mA, 100mA, and 150mA CMOS LDOs with Shutdown and Error Output
Features
Very Low Supply Current (55A Typ.) for Longer Battery Life Very Low Dropout Voltage: 140mV (Typ.) @ 150mA High Output Voltage Accuracy: ±0.4% (Typ) 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: 60sec (Typ) Over-Current Protection Space-Saving 5-Pin SOT-23A Package Pin Compatible Upgrades for Bipolar Regulators
General Description
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 55A at full load (20 to 60 times lower than in bipolar regulators). The devices’ key features include ultra low noise operation, very low dropout voltage - typically 45mV (TC2054); 90mV (TC2055); and 140mV (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 0.5A (max) and both VOUT and ERROR are disabled when the shutdown input is low. The devices also incorporate over-current protection. The TC2054, TC2055 and TC2186 are stable with a low esr ceramic output capacitor of 1F and have a maximum output current of 50mA, 100mA and 150mA, resp……