P1484

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 5

www.unisonic.com.tw

QW-R103-060.E



ABSOLUTE MAXIMUM RATING (Note 1)

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

-0.3~+23

V

Switch Node Voltage

25

V

All Other Pins

-0.3~+6

V

1.4

W

Junction Temperature

150

°C

Storage Temperature

-65~+150

°C

Note: 1. 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.

Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the

regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from

permanent damage.



THERMAL DATA

PARAMETER

SYMBOL

RATING

UNIT

Junction to Ambient

90

°C/W

Junction to Case

45

°C/W

Note: Measured on JESD5 1-7, 4-layer PCB



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATING

UNIT

Input Voltage

6~18

V

Output Voltage

0.923~18

V

Ambient Operating Temperature

-40~+85

°C

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



PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Supply Current

3.5

5

mA

Feedback Voltage

0.900 0.923 0.946

V

High-Side Switch On Resistance (Note 1)

70

mΩ

Low-Side Switch On Resistance (Note 1)

50

mΩ

High-Side Switch Leakage Current

10

μA

Upper Switch Current Limit

Minimum Duty Cycle

3.4

A

Lower Switch Current Limit

From Drain to Source

1.1

A

COMP to Current Sense

Transconductance

5

A/V

Oscillation Frequency

300

365

430

KHz

Short Circuit Oscillation Frequency

40

KHz

Maximum Duty Cycle

92

%

EN Shutdown Threshold Voltage

0.8

1.2

2.0

V

Input Under Voltage Lockout Threshold

4

V

Soft-Start Current

15

μA

Thermal Shutdown (Note 1)

160

°C

Note: Guaranteed by design, not tested.