Diodes Menu Close

Description

The AL8863 is a step-down DC/DC controller designed to drive LEDs with high output current. The device operates at an input supply voltage from 4.5V to 60V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The switching frequency range of AL8863 is from 50KHz to 1MHz. The wide operating frequency range allows more flexibility on component selection, and also with operating up to 1MHz, it allows the use of smaller size external components, hence minimizing the PCB size and deriver board.

The output current of AL8863 is set via an external resistor connected between the VIN and CSN input pins. Dimming is achieved by applying a PWM signal at the DIM input pin. The soft-start time can be adjusted using an external capacitor from the DIM pin to ground.

Application

  • Commercial & industrial lighting
  • Architecture lighting
  • External LED drivers and smart lighting

Features

  • Wide Input Voltage Range: 4.5V to 60V
  • Operating Frequency Range: 50KHz to 1MHz
  • 1000:1 PWM Dimming Resolution at 100Hz
  • Single Pin for On/Off and Brightness Control by PWM Signal

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP On Request*
Topologies (Buck) Yes
Topologies (Buck-Boost) No
Topologies (Boost) No
Minimum Input Voltage 4.5 V
Maximum Input Voltage 60 V
Maximum Output Voltage Ext MOSFET V
Maximum LED Current Ext MOSFET A
LED Current Accuracy 5 %
Switching Frequency Maximum 1000 kHz
Dimming (PWM) Yes
Dimming (Analog) No
Efficiency 95 %
Operating Temperature Range -40 to 125 °C
Sense Voltage 100 mV
AEC-Q100 Grade No

Related Content

Packages
SO-8EP

Applications

Technical Documents

SPICE Model

Calculators

Recommended Soldering Techniques
Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AL8863SP-13 Digi-Key Electronics 2349 12/10/2019 Buy Now United States
AL8863SP-13 Mouser Electronics Inc. 2380 12/10/2019 Buy Now United States