Diodes Incorporated

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60V Three Independent PWM Channel Linear LED Driver

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The AL1783 is a three-channel linear LED driver with independent PWM dimming and current-setting controls for each channel. The device is designed to target connected, commercial, industrial, and RGB LED lighting applications. The key merits of the AL1783 are attributed to a compact solution, eBOM cost effectiveness, excellent PWM dimming performance, low standby power, ease of system implementation, and up to 60V input and LED pin operating voltage. The AL1783 is available in the TSSOP-16EP package to minimize PCB space and external component count.


  • Wide Input Voltage Range from 6.5V to 60V
  • -40°C to +105°C Ambient Temperature Operation Range
  • ±4% LED Current Tolerance @125mA
  • PWM Dimming Control for Each Channel
  • LED Current Adjustable for Each Channel by External Ref pins
  • Automatic Enter and Exit Standby Power Mode
  • Fast PWM Dimming Capable to eliminate e-Flicker
  • Robust Protections: Under Voltage Lock-out (UVLO), Over
    Voltage Protection (OVP), LED String Open/Short Protection
    (LED Short/Open)
    • Over Temperature Protection (OTP): Thermal Fold-back,
      Thermal Shut-down, and Automatic Thermal Recovery
  • Fault Reporting: UVLO, OTP, LED Open and Short
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen- and Antimony-Free. “Green” Device 
  • For automotive applications requiring specific change
    control (i.e. parts qualified to AEC-Q100/101/200, PPAP
    capable, and manufactured in IATF 16949 certified facilities),
    please contact us or your local Diodes representative.


  • RGB Lighting
  • Horticulture Lighting
  • Architecture Lighting
  • Industrial Lighting
  • Commercial Lighting, i.e. Ceiling and Panel Light
  • Connected Lighting

Product Specifications

Product Parameters

AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Topology Linear LED Driver
Minimum Supply Voltage (V) 6.5 V
Maximum Supply Voltage (V) 60 V
Maximum VOUT (V) 60 V
Number of Channels 3
LED Current Sense Voltage (mV) N/A mV
Output Current (mA) 250 mA
Channel Max. Output Current (mA) 250 mA
Accuracy (%) 4 %
Dimming PWM
Temperature Range (°C) -40 to 105 °C

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