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The AL8860 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 to1A for TSOT25 package and 1.5A for MSOP-8EP package. Depending upon supply voltage and external components, this converter can provide up to 40 watts output power.


  • LED Retrofit for Low Voltage Halogen
  • Low Voltage Industrial Lighting
  • Illuminated Signs
  • External Driver with Multiple Channels


  • Low BOM Counts
  • Wide Input Voltage Range: 4.5V to 40V
  • Output Current up to 1.5A
  • Internal 40V NDMOS Switch
  • Typical 5% Output Current Accuracy
  • Single Pin for On/Off and Brightness Control by DC Voltage or PWM Signal
  • Recommended Analog Dimming Range: 5% ~100%
  • Soft-Start
  • High Efficiency (Up to 97%)
  • LED Short Protection
  • Inherent Open-Circuit LED Protection
  • Over Temperature Protection (OTP)
  • Up to 1MHz Switching Frequency
  • Pb-free TSOT25 and MSOP-8EP Packages

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 40 V
Maximum Output Voltage 36 V
Maximum LED Current 1.5 A
LED Current Accuracy 5 %
Switching Frequency Maximum 1000 kHz
Dimming (PWM) Yes
Dimming (Analog) Yes
Efficiency 97 %
Operating Temperature Range -40 to 105 °C
Sense Voltage 100 mV
AEC-Q100 Grade 1

Related Content



Technical Documents


SPICE/IBIS Model Documents


Evaluation Board User Guides

Application Notes

Recommended Soldering Techniques


Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Countries/Regions
AL8860MP-13 Mouser Electronics Inc. 16532 10/25/2020 Buy Now South America, North America, Asia, Europe, Middle East
AL8860MP-13 Digi-Key Electronics 20176 10/24/2020 Buy Now Europe, Asia, North America
AL8860MP-13 Farnell, An Avnet Company 1813 10/24/2020 Buy Now England
AL8860MP-13 Future Electronics - Asia 5000 10/24/2020 Singapore
AL8860MP-13 RS Components 9925 10/24/2020 Buy Now England
AL8860MP-13 RS Components Ltd. 9925 10/24/2020 Buy Now Japan
AL8860WT-7 Arrow Electronics 3024 10/25/2020 Buy Now United States
AL8860WT-7 Mouser Electronics Inc. 14753 10/25/2020 Buy Now South America, North America, Asia, Europe, Middle East
AL8860WT-7 Digi-Key Electronics 63065 10/24/2020 Buy Now Europe, Asia, North America
AL8860WT-7 Farnell, An Avnet Company 4237 10/24/2020 Buy Now England
AL8860WT-7 Future Electronics 6000 10/24/2020 Buy Now Canada
AL8860WT-7 RS Components 280 10/24/2020 Buy Now England
AL8860WT-7 RS Components Ltd. 280 10/24/2020 Buy Now Japan