Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SOT25.pngNRND = Not Recommended for New Design
COST-EFFECTIVE LOW EMI 30V 1A BUCK LED DRIVER
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The AL8808 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. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AL8808 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 AL8808 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.
It is available in TSOT25.
| AEC Qualified | No |
|---|---|
| AEC-Q100 Grade | No |
| Compliance (Only Automotive supports PPAP) | Standard |
| Compliance (Only Automotive supports PPAP) | Standard |
| Dimming (Analog) | Yes |
| Dimming (PWM) | Yes |
| Efficiency (%) | 97 |
| Efficiency (%) | 97 |
| LED Current Accuracy (%) | 5 |
| LED Current Accuracy (%) | 5 |
| MaximumInput Voltage (V) | 30 |
| Maximum Input Voltage (V) | 30 |
| Maximum LED Current (A) | 1 |
| Maximum LED Current (A) | 1 |
| Maximum Output Voltage (V) | 30 |
| Maximum Output Voltage (V) | 30 |
| MinimumInput Voltage (V) | 6 |
| Minimum Input Voltage (V) | 6 |
| OperatingTemperatureRange (°C) | -40 to 125 |
| Operating Temperature Range (°C) | -40 to 125 |
| AEC Qualified | No |
| Sense/Feedback Voltage (mV) | 100 |
| Sense/Feedback Voltage (mV) | 100 |
| Switching Frequency Maximum (kHz) | 1000 |
| Switching Frequency Maximum (kHz) | 1000 |
| Topologies (Boost) | No |
| Topologies (Buck-Boost) | No |
| Topologies (Buck) | Yes |
| Topologies (Charge Pump) | No |
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2602 | 2023-01-31 | 2023-07-31 | Device End of Life (EOL) |
