manualshive.com logo in svg

Diodes AL8843EV1, User Manual, Page: 5 / 10

Share
Download
Diodes AL8843EV1 User Manual Download Page 5

 

AL8843EV1 User Guide 

                           
 

 

 

 

   

AL8843EV1

                                                                                                                    Page 5 of 10 

Dec 2017                                                                                                               
www.diodes.com

 

Bill of Material  

 

Ref 

Value 

Package 

Part Number 

Manufacturer 

Notes 

U1 

AL8843 

SO-8EP 

AL8843SP-13 

Diodes 

DC-DC converter 

D1 

60V, 3A 

SMB 

B360B-13-F 

Diodes 

Schottky diode 

R1, R2 

0R100 

1206 

 

Generic 

+/-1% 

R3 

0R 

0805 

 

Generic 

+/-5% 

C1, C2 

4.7uF, 50V 

1210 

C1210X475K5RAC 

Generic KEMET 

X7R 

C3 

100nF,100V 

0805 

Generic 

NMC0805X7R104K100 

NIC 

Components 

X7R 

C4 

Not Fitted 

0805 

 

 

Optional soft start 

capacitor

 

C5, C6 

1uF, 100V 

1206 

Generic 

NMC1206X7R105K100

 

NIC 

Components 

X7R 

L1 

82uH 

1280 

744770182 

Würth Elektronik

 

82uH, ~0.16R, ~2.45A 

Note: The component part numbers are correct at the time of publication. Diodes Inc reserves the right to 
substitute other parts where necessary, without further notification.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for AL8843EV1

Page 1: ...a DC voltage signal or a PWM signal The soft start time can be adjusted by an external capacitor from the CTRL Pin to Ground Applying a voltage of 0 3V or lower to the CTRL Pin will shut down the powe...

Page 2: ...oltage ref pin 2 5V This pin can be used to achieve dimming and for switching the output current off Leave floating for normal operation PWM Signal Input Remove C4 apply PWM signal to CTRL CTRL GND An...

Page 3: ...AL8843EV1 User Guide AL8843EV1 Page 3 of 10 Dec 2017 www diodes com Evaluation Board Schematic Figure 3 Evaluation Board Schematic...

Page 4: ...tion Leave CTRL pin floating for normal operation 3 Power Supply Connect the 5 40VDC to VIN GND pin to supply the system and AL8843 4 PWM Dimming Remove C4 apply a PWM signal low level 0 3V and high l...

Page 5: ...Generic 5 C1 C2 4 7uF 50V 1210 C1210X475K5RAC Generic KEMET X7R C3 100nF 100V 0805 Generic NMC0805X7R104K100 NIC Components X7R C4 Not Fitted 0805 Optional soft start capacitor C5 C6 1uF 100V 1206 Gen...

Page 6: ...nal Waveforms Switching waveform Vin 20V 3LEDs Y Vin R SW B CTRL G IL Start up waveform Vin 20V 3LEDs Y Vin R SW B CTRL G IL Soft Start waveform Vin 20V 3LEDs C4 10nF Y Vin R SW B CTRL G IL PWM Dimmin...

Page 7: ...PWM Dimming waveform Vin 20V 3LEDs PWM frequency 500Hz Duty 50 Y Vin R SW B CTRL G IL PWM Dimming waveform Vin 20V 3LEDs PWM frequency 500Hz Duty 20 Y Vin R SW B CTRL G IL LED open protection Vin 20V...

Page 8: ...5 10 15 20 25 30 35 40 1500 1600 1700 1800 1900 2000 2100 2200 I LED mA Vin V Vo 3 3V Vo 6 6V Vo 9 9V Vo 13 2V Vo 16 5V Vo 19 8V Vo 23 1V Vo 26 4V Vo 29 7V Vo 33V Functional Data Curves Efficiency vs...

Page 9: ...AL8843EV1 User Guide AL8843EV1 Page 9 of 10 Dec 2017 www diodes com Thermal Test Figure 6 Top Vin 20V 3LEDs Burn in time 60min Figure 7 Bottom Vin 20V 3LEDs Burn in time 60min...

Page 10: ...l or foreign patents pending Product names and markings noted herein may also be covered by one or more United States international or foreign trademarks This document is written in English but may be...

Reviews:

No comments