AX3902

3/13

Axelite Confidential Materials, do not copy or distribute without written consent.

Rev.1.2 Nov.04, 2019



ABSOLUTE MAXIMUM RATINGS

Characteristics

Symbol

Rating

Unit

Absolute Maximum Rating(Note1)

Input Supply Voltage

VIN

20

V

SW,EN Voltage

20

V

Dynamic Vsw in 10ns Duration

-3 to Vin+3

V

BS-SW Voltage

6

V

FB Voltage

VFB

6

V

Junction Temperature Range

TJ

-40 to 150

°C

Storage Temperature Range

-65 to 150

°C

Lead Temperature (Soldering 10s)

260

°C

Recommended Operating Conditions(Note2)

Supply Input Voltage

VIN

4.5 to 18

V

Operating Temperature Range

-40 to 85

°C

Thermal information(Note3,4)

Maximum Power Dissipation(TA=+25°C )

1.25

W

Thermal Resistance

θJA

100

°C/W

Thermal Resistance

θJC

55

°C/W

Note (1): Stress exceeding those listed “Absolute Maximum Ratings” may damage the device.

Note (2): The device is not guaranteed to function outside of the recommended operating conditions. Note (3): Measured

on JESD51-7, 4-Layer PCB.

Note (4): The maximum allowable power dissipation is a function of the maximum junction temperature TJ_MAX, the

junction to ambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power

dissipation at any ambient temperature is calculated by PD_MAX= (TJ_MAX-TA)/θJA. 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.