Diodes’ AL8806 is a high-efficiency 30V/1.5A step-downLED drivercan drive up to 8ledworking voltage from 6V to 30V, LED driving current up to 1.5A, efficiency up to 98%, built-in output open circuit protection, PWM/DC input dimming control, mainly used in high-power MR16 lamps, general purposeilluminationlamps and multichip LED drivers. This article introduces AL8806 main features, AC/DC typical application circuit, MR16 lamp application circuit, AL8806EV3 evaluation board and bill of materials (BOM).
AL8806: HIGH EFFICIENCY 30V 1.5A BUCK LED DRIVER
The AL8806 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 30V. The AL8806 switches at frequency up to 1MHz. This allows the use of small size external components, hence minimizing the PCB area needed.
Maximum output current of AL8806 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming.
AL8806 main features:
LED driving current up to 1.5A
Better than 5% accuracy
High efficiency up to 98%
Operating input voltage from 6V to 30V
High switching frequency up to 1MHz
PWM/DC input for dimming control
Built-in output open-circuit protection
SOT25 MSOP8-EP: Available in “Green” Molding Compound (No Br, Sb) with lead Free Finish/RoHS Compliant
AL8806 application:
High power MR16 lamps
General illumination lamps
Multi-die LED driver
Diodes’ AL8806 is a high-efficiency 30V/1.5A step-downLED drivercan drive up to 8ledworking voltage from 6V to 30V, LED driving current up to 1.5A, efficiency up to 98%, built-in output open circuit protection, PWM/DC input dimming control, mainly used in high-power MR16 lamps, general purposeilluminationlamps and multichip LED drivers. This article introduces AL8806 main features, AC/DC typical application circuit, MR16 lamp application circuit, AL8806EV3 evaluation board and bill of materials (BOM).
AL8806: HIGH EFFICIENCY 30V 1.5A BUCK LED DRIVER
The AL8806 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 30V. The AL8806 switches at frequency up to 1MHz. This allows the use of small size external components, hence minimizing the PCB area needed.
Maximum output current of AL8806 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming.
AL8806 main features:
LED driving current up to 1.5A
Better than 5% accuracy
High efficiency up to 98%
Operating input voltage from 6V to 30V
High switching frequency up to 1MHz
PWM/DC input for dimming control
Built-in output open-circuit protection
SOT25 MSOP8-EP: Available in “Green” Molding Compound (No Br, Sb) with lead Free Finish/RoHS Compliant
AL8806 application:
High power MR16 lamps
General illumination lamps
Multi-die LED driver
figure 1. AL8806 Typical Application Circuit (1)
figure 2. AL8806 Typical Application Circuit (2)
image 3. MR16 application circuit
Figure 4. AL8806EV3 Evaluation Board Outline Drawing (Top View)
AL8806EV3 Evaluation Board Bill of Materials (BOM):
The Links: SKIIP38AC12T4V1 MG400Q1US11
