LR3965

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

6 of 10

www.unisonic.com.tw

QW-R102-037.R



ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage

Note1

6

V

-2

2

%

Output Voltage Accuracy

(Preset Mode)

-3

3

%

Maximum Output Current

1.5

A

Short-Circuit Current Limit

2.5

A

200

µA

Ground Pin Current

250

µA

1000

1050

Dropout Voltage (Note 2)

550

mV

Line Regulation (Note 3)

OUT

IN

OUT

V

×

∆V

∆V

0.08

0.55

%/V

Load Regulation (Note 3, 4)

0.25

0.5

%

Output Voltage Noise

300

Shutdown Supply Current

GND

=

SHDN

0.01

5

µA

1.6

V

Shutdown Threshold

0.6

V

Thermal Shutdown Temperature

170

°С

Thermal Shutdown Hysteresis

20

°С

ADJ Voltage

0.774

0.8

0.826

V

ADJ Mode Threshold

80

mV

Adjustable Output Voltage

0.8

5

V

POK Output Low Voltage

Sinking 2mA

5

50

mV

Operating Voltage Range for

Valid POK Output

Sinking 100µA

1.0

5.5

V

POK Output High Leakage

Current

100

nA

POK Threshold

90

93

96

%

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

value.

3. 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.

4. 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 1.5A.