DESCRIPTION

The UTC  LR9280 is a typical LDO (linear regulator) with the

features of high output voltage accuracy, low supply current, low

ON-resistance. Internally, there’re many functions of UTC LR9280

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 LR9280.

The output voltage of these ICs is fixed with high accuracy. B

version has a chip enable pin,  therefore ultra-low consumption

current standby mode can be realized with the pin.

FEATURES

* Standby Mode (TYP=0.1µA)

* Supply current (TYP=1µA)

  (Except the current through CE pull-down circuit)

* Output voltage accuracy (±2.0%)

* Output voltage Range (1.2V~3.6V)

* Dropout voltage (TYP=0.25V )(IOUT=150mA 3.0V Output type)

* Line regulation (TYP=0.05%/V)

* Temperature-Drift Coefficient of Output Voltage (TYP=±100ppm/°C)

* Ceramic capacitors are recommended to be used with this IC (1μF)