LR478 datasheet(4/8 Pages) ETL

4 / 8 page

LR478

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 8

www.unisonic.com.tw

QW-R119-003.C



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

VIN

-0.3 ~ +10

Output Current

IOUT

400

Power Dissipation(note3)

700

Junction Temperature

+125

C

Operating Temperature

TOPR

-40 ~ +85

C

Storage Temperature

TSTG

-40~+150

C

Note 1. 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.

2. The device is guaranteed to meet performance specification within 0℃ ~ +70℃ operating temperature range

and assured by design from –20℃ ~ +85℃.



RECOMMENDED OPERATION CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

Operating Voltage

VOPR

0 ~ 10

Output Current

IOUT

0 ~ 300



ELECTRICAL CHARACTERISTICS(VCONT =1.6V, Ta=25C, unless otherwise specified )

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

No-load Input Current 1

IQ1

VIN=5V, IOUT=0mA

No-load Input Current 2

IQ2

VIN=4V, IOUT=0mA

Input Current (OFF)

IQ3

VIN=5V, VCONT=0.4V

250

μA

Regulator

Output Voltage

VOUT

VIN=5V, IOUT=30mA

3.33

3.40

3.47

Input-Output Different Voltage

VI/O(DIFF)

VIN=3.2V, IOUT=150mA

0.15

0.3

Line Regulation

∆VOUT

VIN=4.4~5.5V, IOUT=30mA

Load Regulation

∆VOUT

VIN=5V, IOUT=0~300mA

120

VOUT Temperature Coefficient

∆VOUT/∆TVIN=5V, IOUT=30mA, TJ= -20~85C

100

ppm/

C

Ripple Rejection

VIN=5V, IOUT=30mA, f=120Hz

VRIPPLE=1VP-P

Output Noise Voltage

VIN

VIN=5V, IOUT=30mA, f=20~80kHz

120

μVrms

CONT Terminal Current

ICONT

VCONT=1.6V

μA

High Threshold Voltage

VTHR(H)

1.6

VIN+0.3

Low Threshold Voltage

VTHR(L)

-0.3

0.4

Reset

Detection Voltage

VIN= VTHR(H)→VTHR(L)

4.11

4.20

4.29

Vs Temperature Coefficient

∆VS/∆T

TJ= -20~85C

100

ppm/

C

Hysteresis Voltage

VHYS

VIN= VTHR(H)→VTHR(L)→VTHR(H)

100

200

Low-Level Output Voltage

VOL

VIN=3.9V, RL=4.7K

100

200

Output Leakage Current

ILEAK

VIN=5V

±0.1

μA

Output Current 1

IOUT1

VIN=3.9V, RL=0

Output Current 2

IOUT2

VIN=3.9V, RL=0, Ta= -20~85C

“H” Transmission Delay Time

tPLH

Cd =0.0μF

μs

Reset Delay Time

tPLH 1

VIN=4V→5V, Cd =0.1μF

“L” Transmission Delay Time

tPLH

μs

Threshold Operating Voltage

VTHR(OPR) VoL=0.4V

0.65

0.85

LR478 Datasheet(PDF) 4 Page - E-Tech Electronics LTD

LR478 Datasheet(HTML) 4 Page - E-Tech Electronics LTD

Html Pages

1 2 3 4 5 6 7 8

Datasheet Download

Link URL