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

Rev.2.2 Oct.08, 2019

AX3106



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

Characteristics

Symbol

Conditions

Min Typ Max Units

Feedback Voltage

VFB

IOUT=0.2A

0.784 0.8 0.816 V

Quiescent Current

ICCQ

VFB=1.2V force

driver off

3

5

mA

Feedback Bias Current

IFB

IOUT=0.2A

-

0.1 0.5

uA

Shutdown Supply Current

ISD

VEN =0V

-

2

10

uA

Current Limit

ICL

3.0

-

-

A

Line Regulation

△ VOUT/VOUT VCC=4V~23V,

IOUT=0.2A

-

0.6 1.2

%

Load Regulation

△ VOUT/VOUT IOUT = 0.2 to 2A

-

0.15 0.3

%

Oscillation Frequency

FOSC

SW pin

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

Soft-Start Time

TSS

-

20

-

ms

Internal MOSFET RDSON

RDSON

VCC=12V, VFB=0V

-

70

-

mΩ

Efficiency

EFFI

VOUT=

5V

IOUT= 1A

-

92

-

%

IOUT = 2A

-

92

-

Thermal shutdown Temp

TSD

125

°C



APPLICATION CIRCUIT

1. MLCC

C2

10uF*2

R1

39K

L1

1

2

C6

0.1uF

AX3106

1

2

3

4

5

6

7

8

FB

EN

COMP

VCC

SW

SW

VSS

VSS

C8

C1

1nF

C4

R3

4.7k

R4

100K

R2

7.5K

VOUT=5V3A

C7

680pF

D1

B340

VFB = 0.8 V ; R1 suggest 10K ~ 50K

VOUT= VFB x

ON/OFF

VCC+12V

C3

10uF*3

0.1uF

0.1uF

(

R1

R2

1 +

)

option

15uH