LR3965A

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 5

www.unisonic.com.tw

QW-R102-089.B



PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

6.5

V

Power Dissipation

606

mW

Junction Temperature

+125

°С

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 RESISTANCES CHARACTERISTICS

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

165

C/W



ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage

Note1

6

V

Output Voltage Accuracy

(Preset Mode)

-2

2

%

Maximum Output Current

2.0

A

Short-Circuit Current Limit

2.5

A

Ground Pin Current

200

µA

Dropout Voltage (Note 2)

650

mV

Line Regulation (Note 3)

OUT

IN

OUT

V

×

∆V

∆V

0.08

0.55

%/V

Load Regulation (Note 3, 4)

0.25

0.8

%

Output Voltage Noise

300

Power Supply Rejection Ratio

PSRR

F=1Khz

45

dB

Shutdown Supply Current

GND

=

SHDN

0.01

5

µA

1.7

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

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

value. Dropout voltage specification applies only to output voltage of 2.5V and above .

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 10ms current pulse.