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

Rev.1.6 Sep.24, 2019

AX2005/A



APPLICATION CIRCUIT

1. Normal application circuit (step-down)

C1

33uH

L1

R5

0.6Ω

VIN

D1

B340

C5

0.1uF

OVP

4

3

VGATE

1

VCC

8

VSS

2

COMP

7

FB

6

SW

5

AX2005/A

C6

0.1uF

C2

0.1uF

R1

C3

1uF

R4

R3

8.2K

LED-1

220uF

EN/SS

U1

ILED

R2

C7

15n

100Ω

D2

DIODE

Dimming

100Hz-50KHz

C4

470uF

LED-N

VOUT

VFB = 0.2V

ILED = VFB/R5

VOVP (OVP) = 0.85× (1+

)

R4

R1

20K

1kΩ

COUT ESR Range

R2

C7

30~80mΩ

470R 10nF

80~300mΩ

100R 15nF

2. AC input application circuit (Inverting)

C1

33uH

L1

R5

0.6Ω

D1

B340

C5

0.1uF

OVP

4

3

VGATE

1

VCC

8

VSS

2

COMP

7

FB

6

SW 5

AX2005/A

C6

0.1uF

C2

0.1uF

R4

C3

1uF

R1

R3

8.2K

LED-1

220uF

EN/SS

U1

R2

C7

33nF

560Ω

AC adapter

VOUT

LED-2

LED-3

LED-4

ILED

Bridge

rectifier

VFB = 0.2V

ILED = VFB/R5

VOVP (OVP) = 0.85× (1+

)

R4

R1

20K

C4

100uF

1kΩ

Part No.

ILED

R5

C1

L1

AX2005/A

350mA

0.57Ω

70mW

100uF

33uH

750mA

0.266Ω

150mW

220uF

1000mA

0.2Ω

200mW

330uF