LR8XXYY

DESCRIPTION 

The UTC LR8XXYY Series are a low dropout regulator with 

high output voltage accuracy, low quiescent current, low dropout, 

and high ripple rejection. This regulator is based on a CMOS 

process. Each of these regulator ICs contains dual LDO regulator, 

both of them includes a voltage reference, an error amplifier, 

resistors for setting Output Voltage, a current limit circuit, and a 

chip enable circuit. 

The UTC LR8XXYY Series exhibit ultra excellent line transient 

response and load transient response, thus they are very suitable 

for the power supply for hand-held communication equipment. 

 FEATURES 

* Supply Current: TYP. 40μA (VR1, VR2) 

* Standby Mode: TYP. 0.1μA (VR1, VR2) 

* Low Dropout Voltage: TYP. 0.22V(IOUT=150mA, VOUT=2.8V) 

* High Ripple Rejection: TYP. 70dB (f=1kHz), TYP. 65dB (f=10kHz) 

* High Output Voltage Accuracy: ±1.0% 

* Low Temperature-Drift Coefficient of Output Voltage: 

TYP. ±80ppm/°C 

* Excellent Line Regulation: TYP. 0.02%/V 

* Built-in Fold Back Protection Circuit TYP. 40mA 

(Current at short mode) 

* Ceramic capacitors are recommended to be used with this IC 

0.22μF or more