标题: TC1072/1073 Data Sheet [打印本页] 作者: admin 时间: 2010-4-17 13:59 标题: TC1072/1073 Data Sheet TC1072/1073 Data Sheet
The TC1072 and TC1073 are high accuracy (typically ±0.5%) CMOS upgrade for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the devices’ CMOS construction eliminates wasted ground current, significantly extending battery life. Total supply current is typically 50µA at full load, 20 to 60 times lower than in bipolar regulators! The devices’ key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 85mV,TC1072 and 180mV,TC1073 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). ERROR can be used as a low battery warning or as a processor RESET signal (with the addition of an external RC network). Supply current is reduced to 0.5µA (max), and both VOUT and ERROR are disabled when the shutdown input is low. The devices incorporate both over-temperature and over-current protection. The TC1072 and TC1073 are stable with an output capacitor of only 1µF and have a maximum output current of 50mA. For higher output current versions, please see the TC1185, TC1186, TC1187 (IOUT = 150mA) and TC1107, TC1108, and TC1173 (IOUT = 300mA) data sheets.
Parameter Name Value
Max Input Voltage 6
Output Voltage (v) 2.5, 2.7, 2.8, 2.85, 3.0, 3.3, 3.6, 4.0, 5.0
Typical Active Current (µA) 50
Typical Dropout Voltage @ Max. lout (mV) 85
Typical Output Voltage Accuracy (%) 0.5
Output Capacitor Type Aluminum/Tantalum
Output Current (mA) 50
Features
Zero Ground Current for Longer Battery Life!
Very Low Dropout Voltage
Choice of 50mA and 100mA Output (TC1072, TC1073, Respectively)
High Output Voltage Accuracy
Standard or Custom Output Voltages
Power-Saving Shutdown Mode
ERROR Ouput can be Used as a Low Battery Detector, or Processor Reset Generator
Bypass Input for Ultra-Quiet Operation
Over-Current and Over-Temperature Protection
Pin Compatible Upgrades for Bipolar Regulators
