L1803

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 6

www.unisonic.com.tw

QW-R102-058.d



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage Range

-0.3~+6

V

Enable Voltage Range

-0.3~+6

V

Power-Good Voltage Range

-0.3~+6

V

Soft-Start Voltage Range

-0.3~+6

V

Feedback Voltage Range

-0.3~+6

V

Output Voltage Range

V

Maximum Output Current

Internally Limited

Junction Temperature

-40~+150

°C

Storage Temperature

-65~+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.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Input Voltage (Note)

1.0

5.5

V

Bias Voltage

2.7

5.5

V

Output Current

0

1.5

A

Operating Ambient Temperature

-40

85

°C



THERMAL RESISTANCES CHARACTERISTICS

PARAMETER

SYMBOL

RATINGS

UNIT

HSOP-8

150

°C/W

Junction to Ambient

DFN3030-10

72 (Note)

°C/W

Note: The PCB area is 4 times larger than that of IC’s



ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage Range

5.5

V

Bias Pin Voltage Range (Note 2)

2.7

5.5

V

Internal Reference (Adj.)

0.792

0.8

0.808

V

Output Voltage Range

0.8

3.3

V

Accuracy (Note 2)

-2

±0.5

2

%

Line Regulation

5.5V

　

0.02

%/V

Load Regulation

0.08

%/V

150

270

mV

Dropout Voltage (Note 3)

1.5

1.7

V

Current Limit

2

3

4

A

Short-Circuit Current

0.6

1.1

A

Bias Pin Current

1

2

mA

70

100

µA

Feedback Pin Current

-1

0.1

1

µA