Diodes AL8400QEV1 Operation & User’s Manual

AL8400QEV1 EVALUATION BOARD USER GUIDE DESCRIPTION The AL8400QEV1, Figure 1, is a double sided evaluation board for the AL8400Q linear LED driver. The evaluation board is preset to drive 150mA through the LED string, the maximum number of which depends on their total forward voltage drop. The operati ...

2 AL8400Q DEVICE DESCRIPTION The AL8400Q is a 5-terminal adjustable Linear LED driver controller offering excellent temperature stability and output handling capability. The AL8400Q simplifies the design of linear and isolated LED drivers. With its low 0.2V FB pin, it controls the regulat ...

3 AL8400QEV1 EVALUATION BOARD REFERENCE DESIGN Figure 2: AL8400QEV1 Schematic The AL8400Q provides a simple linear LED driver in the form of a constant current circuit. The device will drive the base of the external transistor, Q1, appropriately to maintain a voltage of 0.2V at the FB pin. ...

4 Bill of Materials QUANTITY PCB IDENT VALUE DESCRIPTION SUGGESTED SOURCE 1 N/A - PCB Diodes 1 U1 AL8400Q Diodes 1 Q1 FZT690B Diodes 2 C1,C2 470nF 0603 Ceramic Capacitor Generic 1 R1 10k 0603 Resistor Generic 1 R2 1R3 1206 Resistor Generic Circuit Accuracy. The accuracy of the circuit is de ...

5 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). D ...