LR18220

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 4

www.unisonic.com.tw

QW-R102-073.c



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Input Supply Voltage (Survival)

6

V

Enable Input Voltage (Survival)

6

V

Maximum Output Current

2

A

Operating Junction Temperature

-40 ~ +125

°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

SOP-8

150

°C/W

Junction to Ambient

HSOP-8

143

°C/W



ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output Voltage Tolerance

-3

0

3

%

Adjustable Pin Voltage

0.776

0.8

0.824

V

Line Regulation

0.15

0.40

V/%

Load Regulation (Note 2)

0.20

0.60

%

45

65

Dropout Voltage (Note 3)

400

600

mV

0.30

1.0

Ground Pin Current

0.30

1.0

mA

Ground Pin Current

0.5

2

uA

f=1kHz

55

Power Supply Rejection Ratio

PSRR

65

dB

Current Limit

4

A

Thermal Shutdown Temperature

170

°C

Logic Low

Output=Low

0.4

V

Enable threshold

Logic High

Output=High

2.0

V

Enable Input Current

-1

0

1

uA

greater.

2. Regulation is measured at constant junction temperature by using a 10ms current pulse. Devices are

tested for load regulation in the load range from 10mA to 2A.

3. Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2%

below the nominal value. Dropout voltage specification applies only to output voltages of 2.5V and above.

For output voltages below 2.5V, the dropout voltage is nothing but the input to output differential, since

the minimum input voltage is 2.5V.