LR1120

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 4

www.unisonic.com.tw

QW-R502-331.l



PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

6

V

EN Input Voltage

6

V

SOT-25

0.38

W

SOT-353

0.25

W

Junction Temperature

150

°C

Storage Temperature

-65~ +150

°C

Note:Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

SOT-25

260

°C/W

Junction to Ambient

SOT-353

400

°C/W



OPERATING CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

2.2 ~ 5.5

V

Junction Temperature

-40 ~ +125

°C

Ambient Temperature

-40 ~ +85

°C

Note: The device is not guaranteed to function outside its operating conditions.



ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

Input Voltage

2.2

5.5

V

Output Voltage Accuracy

-2

0

+2

%

Line Regulation

OUT

IN

OUT

V

×

V

∆

V

∆

0.01

0.2

%/V

0.6

%

Load Regulation (Note 1)

OUT

OUT

V

V

∆

1

%

Quiescent Current (Note 2)

25

50

μA

Standby Current

0.7

1.5

μA

0.4

0.7

1.05

A

Current Limit

0.5

0.8

1.05

A

160

320

Dropout Voltage (Note 3)

250

400

mV

Soft Start Time

0.7

1

ms

Logic-Low

0

0.6

V

EN Threshold

Logic-High

1.6

5.5

V

Enable Pin Current

0.1

1

5

μA

Over Temperature Shutdown

OTS

170

°C

Over Temperature Hysteresis

OTH

30

°C

Power Supply Rejection Rate

PSRR

55

dB

Output Noise Voltage

40

Notes: 1. Regulation is measured at constant junction temperature by using a 2ms current pulse. Devices are tested

for load regulation in the load range from 1mA to 500mA.

current plus the ground pin current.