P1482A

LINEARINTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD

3 of 5

www.unisonic.com.tw

QW-R115-001.E



ABSOLUTE MAXIMUM RATING (T

A=25°C, unless otherwise specified)

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

VIN

-0.3~+18

V

Switch Node Voltage

VSW

18

V

All Other Pins

-0.3~+6

V

Continuous Power Dissipation

PD

Internally Limited

W

Junction Temperature

TJ

150

°C

Storage Temperature

TSTG

-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.



THERMAL DATA

PARAMETER

SYMBOL

RATING

UNIT

Junction to Ambient

θJA

143

°C/W

Note: Surface mounted on 1 in

2 copper pad of FR4 board.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATING

UNIT

Input Voltage

VIN

6~18

V

Output Voltage

VOUT

0.923~15

V

Ambient Operating Temperature

TOPR

-40~+85

°C

Note: The device is not guaranteed to function outside of its operating conditions.



ELECTRICAL CHARACTERISTICS (V

IN=12V, TA=25°C, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

Supply Current

VEN=2.0V, VFB=1.0V

3.5

5

mA

Feedback Voltage

VFB

6V

≤VIN ≤18V

0.900 0.923 0.946

V

High-Side Switch On Resistance (Note 1)

RDS(ON)1

110

mΩ

Low-Side Switch On Resistance (Note 1)

RDS(ON)2

100

mΩ

High-Side Switch Leakage Current

VEN=0V, VSW=0V

10

μA

Upper Switch Current Limit

Minimum Duty Cycle

2.4

3.4

A

Lower Switch Current Limit

From Drain to Source

1.1

A

COMP to Current Sense

Transconductance

GCS

5

A/V

Oscillation Frequency

FOSC1

300

365

430

KHz

Short Circuit Oscillation Frequency

FOSC2

VFB=0V

40

KHz

Maximum Duty Cycle

DMAX

VFB=1.0V

92

%

EN Shutdown Threshold Voltage

VEN Rising

0.7

0.9

2.0

V

Input Under Voltage Lockout Threshold

VIN Rising

4

V

Soft-Start Current

VSS=0V

15

μA

Thermal Shutdown (Note)

160

°C

Note: Guaranteed by design, not tested.