The AP8801 is a 500mA LED step-down converter designed to drive LEDs with a constant current. It can drive up to thirteen LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 8V to 48V.
The AP8801 is a step‑down DC/DC converter designed to drive LEDs with a constant current up to 500 mA. It operates from 8 V to 48 V input, switches at up to 500 kHz and offers high efficiency (up to 92 %). LED current is set by an external resistor on the SET pin, and dimming can be performed with a PWM or DC voltage on the CTRL pin.
The device is offered in SOP‑8L and MSOP‑8L packages, both RoHS‑compliant. Detailed specifications, absolute maximum ratings, recommended operating conditions, and application guidelines (inductor, capacitor, diode selection, thermal considerations) are provided in the datasheet.
| Maximum LED current | 500 mA |
|---|---|
| Operating input voltage range | 8 V – 48 V |
| Efficiency | up to 92 % |
| Switching frequency | up to 500 kHz |
| Reference voltage (Vref) | 1.25 V |
| Package options | SOP‑8L, MSOP‑8L |
The device can drive up to 500 mA of LED current.
The PWM frequency must be lower than 500 Hz for proper dimming resolution.
The AP8801 is available in SOP‑8L and MSOP‑8L packages.