78DXXA

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 9

www.unisonic.com.tw

QW-R101-010,P

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

35

V

Output Current

1

A

SOT-223

8.3

W

TO-251/TO-252

TO-252-3

10

Junction Temperature

+150

°C

Operating Temperature

-40 ~ +85

°C

Storage Temperature

-55 ~ +150

°C

Notes: 1. Absolute maximum ratings are stress ratings only and functional device operation is not implied. The

device could be damaged beyond Absolute maximum ratings.

2. The maximum steady state usable output current are dependent on input voltage, heat sinking, lead

length of the package and copper pattern of PCB. The data are showed as electrical characteristics table

represents pulse test conditions with junction temperatures specified at the initiation of test.

THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

SOT-223

150

°C/W

TO-251/TO-252

TO-252-3

112

Junction to Case

SOT-223

15

°C/W

TO-251/TO-252

TO-252-3

12.5

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX

UNIT

Output Voltage

4.80

5.0

5.20

V

4.75

5.25

V

Load Regulation

50

mV

25

mV

Line Regulation

50

mV

50

mV

Quiescent Current

8.0

mA

Quiescent Current Change

1.0

mA

0.5

mA

Output Noise Voltage

eN

10Hz≤f≤100kHz

40

μV

-0.6

mV/

°C

Ripple Rejection

RR

62

80

dB

Peak Output Current

1.8

A

Short-Circuit Current

250

mA

Dropout Voltage

2.0

V