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

Rev.1.4 Oct.17, 2019

AX3484



ELECTRICAL CHARACTERISTICS

(VIN = 12V, TA = +25°C, unless otherwise noted.)

Characteristics

Symbol

Conditions

Min Typ Max Units

Operating Voltage

VIN

4.75

-

23

V

Shutdown Supply Current

ISD

VEN = 0V

-

1

3.0

μA

Feedback Voltage

VFB

4.75V ≤ VIN ≤ 23V

0.900 0.925 0.950 V

High-Side Switch On Resistance

(Note)

RDS(ON)1

-

100

-

mΩ

Low-Side Switch On Resistance

(Note)

RDS(ON)2

-

100

-

mΩ

High-Side Switch Leakage Current

VEN = 0V, VSW = 0V

-

-

10

μA

Switch Current Limit

3.8

-

-

A

Oscillation Frequency

FOSC1

280 350 430 KHz

Short Circuit Oscillation Frequency

FOSC2 VFB = 0V

-

90

-

KHz

Maximum Duty Cycle

DMAX

VFB = 0.8V

-

90

-

%

EN Shutdown Threshold Voltage

ENH

VEN Rising

1.1

1.5

2.0

V

EN Shutdown Threshold Voltage

Hysterisis

-

210

-

mV

EN Lookout Threshold Voltage

2.4

2.7

3.0

V

EN Lookout Hysterisis

-

210

-

mV

Soft-Start Current

ISS

VSS = 0V

-

6

-

μA

Soft-Start Period

CSS = 0.1μF

-

15

-

ms

Thermal Shutdown

TSD

-

160

-

°C

Thermal Shutdown Hysterisis

TSH

-

35

-

°C

Note: Guaranteed by design.