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
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The AL8805 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 36V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AL8805 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 AL8805 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.
| AEC-Q100 Grade | No |
|---|---|
| Compliance (Only Automotive supports PPAP) | Standard |
| Dimming (Analog) | Yes |
| Dimming (PWM) | Yes |
| Efficiency (%) | 98 |
| LED Current Accuracy (%) | 5 |
| MaximumInput Voltage (V) | 36 |
| Maximum LED Current (A) | 1 |
| Maximum Output Voltage (V) | 36 |
| MinimumInput Voltage (V) | 6 |
| OperatingTemperatureRange (°C) | -40 to 125 |
| AEC Qualified | No |
| Sense Voltage (mV) | 100 |
| Switching Frequency Maximum (kHz) | 1000 |
| Topologies (Boost) | No |
| Topologies (Buck-Boost) | No |
| Topologies (Buck) | Yes |
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) |
