LR9103数据手册UTC中文资料规格书

描述 Description

The UTC  LR9103 is a typical LDO (linear regulator) with the

特性 Features

of high output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection. During operation of the UTC  LR9103, the dropout voltage is very low and the response of line transient and load transient are very well. Internally, there’re many functions of  UTC  LR9103 which can be seen in the block figure. There are a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit, and a chip enable circuit in each UTC LR9103.  The UTC LR9103 can be used as an ideal of the power supply for hand-held communication equipment, such as: power source for portable communication equipment, power source for electrical appliances, for example, cameras, VCRs and camcorders and power source for battery-powered equipment.     FEATURES   Ultra Supply Current:  36µA (Typ.)Standby Mode:  0.1µA (Typ.)Very Low Dropout Voltage:  0.13V (Typ.) @ IOUT =150mA, VOUT =2.85VRipple Rejection:  75dB (Typ.) @ f=1kHz,VOUT=2.85VTemperature-Drift Coefficient of Output Voltage: ±50ppm/°C (Typ.)Well Line Regulation:  0.02%/ V (Typ.) Output Voltage Accuracy:  ±1.0% (Typ.)Internal Fold Back Protection Circuit: 50mA (Typ.) (Current at short mode) CIN=COUT=0.47µF or more (Ceramic capacitors) are recommended to be used with this IC