LR1148L-AD-AF5-R datasheet(3/4 Pages) UTC

3 / 4 page

LR1148

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 4

www.unisonic.com.tw

QW-R502-A74.a



ABSOLUTE MAXIMUM RATING (TA=25°С)

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

VIN

6.5

Power Dissipation

360

Junction Temperature

+125

°С

Ambient Operating Temperature

TOPR

-40 ~ +85

°С

Storage Temperature

TSTG

-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

θJA

260

C/W

Junction to Case

θJC

C/W



ELECTRICAL CHARACTERISTICS

(CIN = 1µF, COUT =1µF, TA= 25°C, unless otherwise specified)(Note 1)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage(Note 2)

VIN

2.3

Output Voltage Accuracy

(Preset Mode)

VOUT

TA＝25°С , IOUT= 1mA ~0.6A

-2

TA＝0~85°С, IOUT= 1mA~0.6A

-3

Maximum Output Current

IOUT

600

Short-Circuit Current Limit

ILIMIT

VOUT=0V

Ground Pin Current

IGND

IOUT = 0mA

µA

IOUT= 1mA to 600mA

µA

Dropout Voltage (Note3)

IOUT=600mA

VOUT(NOM)<=1.8V

500

1200

1.8V<VOUT(NOM)

200

450

Line Regulation (Note4)

OUT

∆V

VIN=VOUT+VD~6V

0.08

0.55

%/V

Load Regulation(Note4,5)

∆VOUT

VIN=VOUT+VD,

IOUT=10mA~600mA

0.25

1.0

Output Voltage Noise

f=10Hz to100kHz, CBP=0.1nF

µVRM

Shutdown Supply Current

IOFF

EN=GND

0.01

µA

Shutdown Threshold

VIH

VIL

0.4

Thermal Shutdown Temperature

TSHDN

170

°С

Thermal Shutdown Hysteresis

DTSHDN

°С

ADJ Voltage

VREF

Measured on ADJ, IOUT =10mA

0.774

0.8

0.826

ADJ Mode Threshold

100

Adjustable Output Voltage

0.8

Note: 1. Specifications are production tested at TA=25°C. Pecifications over the -40°C to 85°C operating temperature

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

2. The minimum operating value for VIN is equal to either [VOUT(NOM)+VD] or 2.3V,whichever is greater

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

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