3/8

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

Rev.1.7 Jul.09, 2015

AX2003



ABSOLUTE MAXIMUM RATINGS (at TA=25°C)

Characteristics

Symbol

Rating

Unit

VCC Pin Voltage

VCC

VSS - 0.3 to VSS + 25

V

Feedback Pin Voltage

VFB

VSS - 0.3 to VCC

V

ON/OFF Pin Voltage

VEN

VSS - 0.3 to VCC + 0.3

V

Switch Pin Voltage

VSW

VSS - 0.3 to VCC + 0.3

V

Power Dissipation

PD

Internally limited

mW

Storage Temperature Range

TST

-65 to +150

°C

Operating Junction Temperature Range

TOP

-40 to +125

°C

Operating Supply Voltage

VOP

+3.6 to +23

V

Thermal Resistance from Junction to case

θJC

60

°C/W

Thermal Resistance from Junction to ambient

θJA

120

°C/W

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



ELECTRICAL CHARACTERISTICS

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

Characteristics

Symbol

Conditions

Min Typ Max Units

Feedback Voltage

VFB

IOUT=0.2A

0.24 0.25 0.26 V

Quiescent Current

ICCQ

VFB=1.2V force driver

off

-

3

5

mA

Feedback Bias Current

IFB

IOUT=0.1A

- 0.1 0.5 uA

Shutdown Supply Current

ISD

VEN =0V

-

2

10 uA

Switch Current

ISW

4.0 -

-

A

Line Regulation

△ VOUT/VOUT VCC=5V~23V,

IOUT=0.2A

-

1

2

%

Load Regulation

△ VOUT/VOUT IOUT = 0.1 to 3A

- 0.2 0.5 %

Oscillation Frequency

FOSC

260 330 400 KHz

EN Pin Logic input threshold

voltage

VSH

High (regulator ON)

2.0 -

-

V

VSL

Low (regulator OFF)

-

- 0.8

EN Pin Input Current

ISH

VEN=2.5V (ON)

-

20

-

uA

ISL

VEN=0.3V (OFF)

- -10 -

uA

Internal MOSFET RDSON

RDSON

VCC=5V, VFB=0V

-

90 140

mΩ

VCC=12V, VFB=0V

-

70 90

Efficiency

EFFI

VOUT = 5V

IOUT = 2A -

92

-

%

IOUT = 3A -

91

-

Thermal shutdown Temp

TSD

- 140 -

°C