DESCRIPTION

The UTC LR9211 is a high speed LDO regulator that features

high accurate, low noise, high ripple rejection, low dropout and low

power consumption. Designed with a P-channel MOSFET series

pass transistor, the UTC LR9211 yields extremely low dropout

voltage and maintains very low ground current (70μA).

The UTC LR9211 does not require a bypass capacitor, hence

achieving the smallest PCB area.

Other features include foldback overcurrent protection, quick

soft start, and overtemperature protection. The UTC LR9211 is

available in fixed output voltage from 0.8V to 3.3V with 0.1V per

step or as an adjustable device with a 0.8V reference voltage The

device comes in various packages.

FEATURES

* Wide Input Voltage Range from 2.5V to 5.5V

* Ultra Low Dropout Voltage: 200mV @ VOUT =3.3V, 300mA

* Ultra Fast Response in Line/Load Transient

* Stable with 1uF Ceramic Output Capacitor

* Low Ground Current: 70μA Typical

* Low Shutdown Current: < 1μA

* Foldback Output Current Limit

* High Output Accuracy

1.5% Initial Accuracy

Fixed Output Voltages: 0.8V~3.3V

Adjustable Output Voltage from 0.8V to 4.5V 

* Over-Temperature Protection