P1785L-S08-R datasheet(4/7 Pages) UTC

4 / 7 page

P1785

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 7

www.unisonic.com.tw

QW-R103-043.b

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATING

UNIT

VCC Pin Voltage

VCC

VSS-0.3 ~ VSS+25

Feedback Pin Voltage

VFB

VSS-0.3 ~ VCC

EN Pin Voltage

VEN

VSS-0.3 ~ VIN+0.3

Switch Pin Voltage

VOUT

VSS-0.3 ~ VIN+0.3

Power Dissipation

Internally limited

Operating Temperature

TOPR

-20 ~ +125

℃

Storage Temperature

TSTG

-40 ~ +150

℃

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

RATING

UNIT

Junction to Ambient

θJA

°C/W

ELECTRICAL CHARACTERISTICS (VIN = 12V, Ta=25°C, unless otherwise specified)

PARAMETER

SYMBOL

CONDITIONS

MIN. TYP. MAX. UNIT

Input Voltage

VIN

3.6

Feedback Voltage

VFB

IOUT=0.1A

0.784

0.8

0.816

Feedback Bias Current

IFB(BIAS)

IOUT=0.1A

0.1

0.5

μA

Switch Current

ISW

2.15

Standby Current

ISTN-BY

VEN=0V

μA

Line Regulation

ΔVOUT/VOUT VIN=6V~23V, IOUT=0.2A

2.1

Load Regulation

ΔVOUT/VOUT IOUT=0.1~2A

0.2

0.5

Oscillation Frequency

fOSC

Measure waveform at SW pin

240

300

360

KHz

Frequency of Current Limit or Short

Circuit Protect

fOSC1

Measure waveform at SW pin

KHz

VSH

Evaluate oscillation at SW pin

0.79

EN Pin Input Voltage

VSL

Evaluate oscillation stop at SW pin

0.72

ISH

μA

EN Pin Input Leakage Current

ISL

-10

μA

OCSET Pin Bias Current

IOCSET

105

μA

Soft-Start Time

TSS

0.3

VIN=5V, VFB=0V

180

230

Internal MOSFET RDS(ON)

RDS(ON)

VIN=12V, VFB=0V

130

200

mΩ

Efficiency

VIN=12V, VOUT=5V, IOUT=2A

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