EmbeddedRelated.com
    Parts    AL1792AFE-13
AL1792AFE-13

DIOAL1792AFE-13

Diodes Incorporated
LED Driver IC 2 Output Linear Analog, PWM Dimming 500mA U-DFN4030-14
Active2,833 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The AL1792AFE-13 is a dual-channel linear LED driver designed for high-end dimmable LED lamps and smart lighting systems. It supports a wide input voltage range from 6.5V to 30V and can deliver up to 500mA per channel with high current accuracy of 4 percent. The device simplifies multi-channel designs by integrating internal power switches and providing deep dimming capabilities through both analog and PWM control.

Why Choose This Part

The AL1792AFE-13 eliminates the need for external power transistors by integrating two 30V/500mA switches into a compact U-DFN4030-14 package. It features comprehensive protection including LED open/short detection and thermal foldback to ensure long-term system reliability. Engineers benefit from a low 10uA shutdown current and a built-in soft-start mechanism that prevents inrush current spikes during power-up.

Applications

Smart Tunable White Lighting
Utilizes the two-channel output to control warm and cool LED strings independently for color temperature adjustment.
Commercial LED Troffers
Provides precise current regulation and fault reporting for high-reliability office and industrial ceiling lights.
Dimmable Decorative Fixtures
Enables smooth, flicker-free dimming transitions using high-resolution PWM or analog voltage inputs.
Emergency Lighting
Leverages the wide supply range and integrated protections for robust operation in building safety systems.

Key Specifications

Type Linear
Dimming Analog, PWM
Applications Lighting
Mounting Type Surface Mount
Package / Case 14-UFDFN Exposed Pad
Voltage - Output 30V
Number of Outputs 2
Internal Switch(s) Yes
Operating Temperature -40degC ~ 125degC (TA)
Voltage - Supply (Max) 30V
Voltage - Supply (Min) 6.5V
Supplier Device Package U-DFN4030-14
Current - Output / Channel 500mA

Getting Started

To evaluate this IC, design a PCB with adequate copper pours around the U-DFN4030-14 thermal pad to manage the heat dissipation inherent in linear regulation. Set the peak LED current for each channel using external resistors at the RSET pins and provide a 100Hz to 1kHz PWM signal for digital dimming control. Monitor the FAULT and PGB pins with a microcontroller to implement real-time diagnostics for open or shorted LED strings.