3/12

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

Rev.1.4 Sep.27, 2019

AX2020



ABSOLUTE MAXIMUM RATINGS (at TA=25°C)

Characteristics

Symbol

Rating

Unit

Supply Voltage

VIN

-0.3 to 40

V

Driver output Voltage

SW

-0.3 to 40

V

Current sense input (Respect to VIN)

CSN

+0.3 to (-6.0)

V

Logic level dimming input

DIM

-0.3 to +6

V

Switch output current

ISW

1.2

A

Power Dissipation

PDMAX

1.5

W

Operation Junction Temperature Range

TJ

-40 to 125

°C

Storage Temperature

TSTG

-55 to 150

°C

Thermal Resistance from Junction to case

θJC

15

°C/W

Thermal Resistance from Junction to ambient

θJA

50

°C/W

Note: θJA is measured with the PCB copper are (need connect to tap) of approximately 1 in2 (Multi-layer).



ELECTRICAL CHARACTERISTICS

The following specifications apply for VIN = 12V, TA=25°C, unless specified otherwise.

Characteristics

Symbol

Conditions

Min

Typ Max Units

Input voltage

VIN

8

-

32

V

Under voltage lock out

VUVLO VIN rising

-

7

-

V

UVLO Hysterisis

VUVLO_hys VIN falling

-

1000

-

mV

Max. Switching Frequency

FSW

-

-

1

MHZ

Current Sense

Mean current sense threshold voltage

VCSN

VIN–VCSN

115

130

145

mV

Sense threshold hysteresis

VCSN_hys

-

±15

-

%

CSN Pin Input Current

ICSN

VIN–VCSN = 50mV

-

0.5

-

μA

DIM Input

DIM input voltage High

VDIM_H

2.0

-

-

V

DIM input voltage Low

VDIM_L

-

-

0.3

V

Max. DIM Frequency

fDIM

fOSC = 500kHz

-

-

50

kHZ

Duty cycle range of low frequency

dimming

DPWM_LF

fDIM = 100Hz

0.02%

-

1

Brightness control range

-

5000:1

-