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Description

The AL8821 is a boost converter that delivers an accurate constant current for MR16 and similar LED Lamps. With proprietary control scheme, the LED driver is compatible with many commonly used electronic transformers and provides designs with High Power Factor (PF) and low Total Harmonic Distortion (THD) for these applications. The operation frequency is up to 1MHz that allows the use of small size inductor. With the package of SO-8EP, the AL8821 has small thermal resistance and can be used for wide range of output power. The driver can be used for dimmable MR16 application and can be compatible with leading-edge dimmer and trailing-edge dimmer.

Application

  • Non-dimmable MR16 Lamps
  • Dimmable MR16 Lamps
  • General Illumination Lamps

Features

  • Wide Input Voltage Range: 5V to 36V
  • Internal 40V NDMOS Switches
  • Continuous Conduction Mode (CCM) Operation
  • Up to 1MHz Switching Frequency
  • High PF > 0.9 and Low THD < 30% and low Ripple < 20%
  • Compatible With Leading-edge Dimmer And Trailing-edge Dimmer
  • Internal Protections
  • Under Voltage Lock Out (UVLO)
  • Output Open
  • Over Temperature Protection (OTP)

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
Topologies (Buck) No
Topologies (Buck-Boost) No
Topologies (Boost) Yes
Minimum Input Voltage 5 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) No
Dimming (Analog) No
Efficiency 85 %
Operating Temperature Range -40 to 105 °C
Sense Voltage 100 mV
AEC-Q100 Grade No

Related Content

Packages
SO-8EP

Applications

Technical Documents

SPICE/IBIS Model Documents

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AL8821SP-13 Digi-Key Electronics 3539 8/11/2020 Buy Now United States
AL8821SP-13 Mouser Electronics Inc. 11106 8/11/2020 Buy Now United States