Diodes Menu Close
Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

Description

The AL8805 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 36V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AL8805 switches at frequency up to 1MHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AL8805 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming.

Application(s)

  • MR16 lamps
  • General illumination lamps

Feature(s)

  • LED Driving Current up to 1A
  • Better than 5% Accuracy
  • High Efficiency up to 98%
  • Operating Input Voltage from 6V to 36V
  • High Switching Frequency up to 1MHz
  • PWM/DC Input for Dimming Control
  • Built-In Output Open-Circuit Protection
  • SOT25: Available in “Green” Molding Compound (No Br,Sb) with lead Free Finish/ RoHS Compliant

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP Standard
Topologies (Buck) Yes
Topologies (Buck-Boost) No
Topologies (Boost) No
Minimum Input Voltage 6 V
Maximum Input Voltage 36 V
Maximum Output Voltage 36 V
Maximum LED Current 1 A
LED Current Accuracy 5 %
Switching Frequency Maximum 1000 kHz
Dimming (PWM) Yes
Dimming (Analog) Yes
Efficiency 98 %
Operating Temperature Range -40 to 125 °C
Sense Voltage 100 mV
AEC-Q100 Grade No

Related Content

Packages
SOT25

Technical Documents

SPICE Model

Evaluation Board User Guides

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

Orderable Part Number Buy from Distributor / Contact Sales Request Samples
AL8805W5-7

AL8805W5-7

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Arrow Electronics Central EU 3000 1/17/2021 Europe Buy Now
Arrow Electronics Central EU 6000 1/17/2021 Europe Buy Now
Mouser Electronics Inc. 13787 1/17/2021 South America, North America, Asia, Europe, Middle East Buy Now
Avnet 3000 1/16/2021 United States Buy Now
Digi-Key Electronics 62796 1/16/2021 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 6637 1/16/2021 England Buy Now
RS Components 40 1/16/2021 England Buy Now
RS Components Ltd. 40 1/16/2021 Japan Buy Now
Future Electronics - Asia 27000 1/15/2021 Singapore Contact Sales
Future Electronics - Europe 3000 1/15/2021 England Contact Sales
Request Sample