78DXXA

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 10

www.unisonic.com.tw

QW-R101-010.Z



ABSOLUTE MAXIMUM RATINGS (TA = 25°C, unless otherwise specified)

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

VOUT=5~20V

VIN

35

V

VOUT=24V

40

V

Output Current

IOUT

1

A

Power Dissipation (TC=25°C)

SOT-223

PD

8.3

W

TO-251/TO-252

TO-252-3

10

Junction Temperature

TJ

+150

°C

Operating Temperature

TOPR

-40 ~ +125

°C

Storage Temperature

TSTG

-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

θJA

150

°C/W

TO-251/TO-252

TO-252-3

112

Junction to Case

SOT-223

θJC

15

°C/W

TO-251/TO-252

TO-252-3

12.5



ELECTRICAL CHARACTERISTICS

(TJ=25C, CI =0.33uF, CO=0.1uF, PD≤15W, unless otherwise specified)

For 78D05A

(VIN=10V, IOUT=1.0A)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX

UNIT

Output Voltage

VOUT

IOUT =5mA~1.0A

4.90

5.0

5.10

V

VIN =7.5~20V, IOUT =5mA~1.0A

4.85

5.15

V

Load Regulation

VOUT

IOUT =5mA~1.0A

50

mV

IOUT =0.25A~0.75A

25

mV

Line Regulation

VOUT

VIN =7~25V

50

mV

VIN =7.5~20V, IOUT =1.0A

50

mV

Quiescent Current

IQ

IOUT≤1.0A

8.0

mA

Quiescent Current Change

IQ

VIN =7.5~20V

1.0

mA

IOUT =5mA~1.0A

0.5

mA

Output Noise Voltage

eN

10Hz≤f≤100kHz

40

V

Ripple Rejection

RR

VIN =8~18V,f=120Hz

59

80

dB

Peak Output Current

IPEAK

1.8

A

Short-Circuit Current

ISC

VIN =35V

250

mA

Dropout Voltage

VD

2.0

V