Datasheet Diodes AL8843Q
| Manufacturer | Diodes |
| Series | AL8843Q |
Automotive Compliant 40V 3A Step-Down LED Driver
Datasheets
Automotive Compliant 40V 3A Step-Down LED Driver
Prices
Detailed Description
The AL8843Q is a hysteresis mode DC-DC step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage.
The device can operate from an input supply between 4.5V and 40V and provide an externally adjustable output current up to 3A. Depending upon supply voltage and external components, this converter can provide up to 60W of output power.
The AL8843Q integrates the power switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.
Dimming can be realized by applying an external control signal to the CTRL pin. The CTRL pin will accept either a DC voltage signal or a PWM signal.
The soft-start time can be adjusted by an external capacitor from the CTRL pin to Ground. Applying a voltage of 0.3V or lower to the CTRL pin will shut down the power switch.
The AL8843Q is available in the thermally enhanced SO-8EP package and automotive compliant, qualified to AEC-Q100 Grade 1, supports PPAP documentations.
Packaging
| AL8843QSP-13 | |
|---|---|
| N | 1 |
| Package | SO-8EP |
Parametrics
| Parameters / Models | AL8843QSP-13 |
|---|---|
| AEC-Q100 Grade | 1 |
| Automotive Compliant PPAP | Yes |
| Dimming (Analog) | Yes |
| Dimming (PWM) | Yes |
| Efficiency | 98 % |
| LED Current Accuracy | 4 % |
| Maximum Input Voltage | 40 V |
| Maximum LED Current | 3 A |
| Maximum Output Voltage | 36 V |
| Minimum Input Voltage | 4.5 V |
| Operating Temperature Range, °C | -40 to 125 ° |
| Qualified to AECQ10x | Yes |
| Sense Voltage | 100 mV |
| Switching Frequency Maximum | 1000 kHz |
| Topologies (Boost) | No |
| Topologies (Buck) | Yes |
| Topologies (Buck-Boost) | No |
Model Line
Manufacturer's Classification
- Power Management > LED Drivers > Medium Voltage DC-DC LED Drivers
