UNISONIC TECHNOLOGIES CO., LTD

LR1120

Preliminary

CMOS IC

www.unisonic.com.tw

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Copyright © 2012 Unisonic Technologies Co., Ltd

QW-R502-331.g

500mA, LOW DROPOUT, LOW

NOISE ULTRA-FAST WITH SOFT

START CMOS LDO REGULATOR

DESCRIPTION

UTC LR1120, a 500mA LDO regulator, has very high PSRR and

super low dropout voltage especially suitable for wireless and portable

applications.

In the field of hand-held wireless devices, board space and

battery life are the main concerns of designers and end-users.

Because of the low quiescent current and low ESR ceramic

capacitors, UTC LR1120 can satisfy those concerns.

Furthermore, low current consumption in shutdown mode

(0.7μA), fast turn-on time (<70μs), high output accuracy, current

limiting protection, and high ripple rejection ratio are advantages of

UTC LR1120.

FEATURES

* Operating Voltage Ranges : 2.2V to 5.5V

* Dropout : 250mV at 500mA

* Extreme Low Noise for DSC Application

* Extreme Fast Response in Line/Load Transient

* Internal Current Limiting Protection

* Internal Thermal Shutdown Protection

* High PSRR

* Recommended 1μF Output Capacitor only for Stability

* With TTL Logic Controlled Shutdown Input

ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

LR1120L-xx-AF5-x-R

LR1120G-xx-AF5-x-R

SOT-25

Tape Reel

Note: xx: Output Voltage, refer to Marking Information.