P1785

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 7

www.unisonic.com.tw

QW-R103-043.c



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATING

UNIT

V

Feedback Pin Voltage

V

EN Pin Voltage

V

Switch Pin Voltage

V

Power Dissipation

Internally limited

mW

Operating Temperature

-20 ~ +125

°C

Storage Temperature

-40 ~ +150

°C

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

65

°C/W



PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNIT

Input Voltage

3.6

23

V

Feedback Voltage

0.784

0.8

0.816

V

Feedback Bias Current

0.1

0.5

μA

Switch Current

2.15

A

Standby Current

10

μA

Line Regulation

1

2.1

%

Load Regulation

0.2

0.5

%

Oscillation Frequency

Measure waveform at SW pin

240

300

360

KHz

Frequency of Current Limit or Short

Circuit Protect

Measure waveform at SW pin

10

KHz

Evaluate oscillation at SW pin

0.79

EN Pin Input Voltage

Evaluate oscillation stop at SW pin

0.72

V

20

μA

EN Pin Input Leakage Current

-10

μA

OCSET Pin Bias Current

75

90

105

μA

Soft-Start Time

0.3

2

5

ms

180

230

130

200

mΩ

Efficiency

η

91

%