LR1148

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 4

www.unisonic.com.tw

QW-R502-A74.a



PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

6.5

V

Power Dissipation

360

mW

Junction Temperature

+125

°С

Ambient Operating Temperature

-40 ~ +85

°С

Storage Temperature

-65 ~ +150

°С

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

Junction to Ambient

260

C/W

Junction to Case

81

C/W



ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage(Note 2)

2.3

6

V

Output Voltage Accuracy

(Preset Mode)

-2

2

%

-3

3

%

Maximum Output Current

600

mA

Short-Circuit Current Limit

1

A

Ground Pin Current

70

µA

80

µA

Dropout Voltage (Note3)

500

1200

mV

200

450

Line Regulation (Note4)

OUT

IN

OUT

V

×

∆V

∆V

0.08

0.55

%/V

Load Regulation(Note4,5)

0.25

1.0

%

Output Voltage Noise

eN

24

S

Shutdown Supply Current

EN=GND

0.01

5

µA

Shutdown Threshold

2

V

0.4

V

Thermal Shutdown Temperature

170

°С

Thermal Shutdown Hysteresis

20

°С

ADJ Voltage

0.774

0.8

0.826

V

ADJ Mode Threshold

100

mV

Adjustable Output Voltage

0.8

5

V

range are assured by design, characterization and correlation with Statistical Quality Controls(SQC).

3. Dropout voltage is defined as the voltage from the input to output when output is 2% below the nominal

value.

4. Output voltage line regulation is defined as the change in output voltage from the nominal value resulting

from a change in the input line voltage. Output voltage load regulation is defined as the change in output

voltage from the nominal value as the load current increases from no load to full load.

5. Regulation is measured at constant junction temperature by using a 20ms current pulse. Devices are tested

for load regulation in the load range from 10mA to 600mA