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

Rev.1.5 Nov.21, 2019

LED1113



APPLICATION CIRCUIT

(1) AC Input

AC D3

U2 LED1113/A

GND

OUT

Iset

AC D2

AC D1

12 Vac

AC D4

D2

VCC+13~18V

C1

100uF

D1

D3

Rset

60/0.25W

IOUT=1.25V/60=21mA

VOUT≥2.5V

1. 13V- VLED-VSET =1.25V

IC’s PD= (1.25*0.02=0.03W)

2. 18V- VLED-VSET=6.25V

IC’s PD = (6.25*0.02=0.13W)

VLED=10.5V (3.5V*3LED)

(2) DC Input

VCC+12V

D1

1W LED

R1

13/5W

U2

LED1113/A

GND

OUT

Iset

Rset

3.6/2W

VCC+12V

D2

1W LED

R1

6/2W

U2

LED1113/A

GND

OUT

Iset

Rset

3.6/2W

D1

1W LED

IOUT=1.25V/3.6=347mA

VOUT=2.5V

1.

R1=13, VR1=4.51V

R1

=4.51*0.347=1.57W

2.

12V- VR1- VLED-VSET=2.74V

= (2.74*0.347=0.95W)

VLED=3.5V

IOUT=1.25V/3.6=347mA

VOUT=2.5V

1.

R1=6, VR1=2.08V

R1

=2.08*0.347=0.73W

2.

12V- VR1- VLED-VSET=1.67V

=1.67*0.347=0.58W

VLED=7V