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IC manufacturers Diodes Incorporated

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reference designAL8841Q | Demoboard AL8841QEV1

Diodes Incorporated AL8841Q | Demoboard AL8841QEV1

AL8841QEV1-EMC User Guide High-Performance Buck 1A Demo Board

Overview

TopologyOther Topology
Input voltage5-40 V
Output 11 A
IC revision00

Description

The AL8841QEV1-EMC, shown in Figure 1, is a double-sided evaluation board for the AL8841Q step-down, or “buck”, LED driver with internal switch in the TSOT25 package. The evaluation board is preset to drive 1000mA into a single LED or multiple LEDs, the maximum number of which depends on their total forward voltage drop and the supply voltage.This guide contains rich information for users to take advantage of. A bill of materials that describes the parts used on this board is included. A schematic and PCB layout are also included, along with measured system performance characteristics and test waveforms. These materials can be used as a reference design for your products to improve time to market.

Features

  • AEC-Q100 Grade 1 Qualified
  • Wide Input Voltage Range: 5V to 40V
  • Constant Current Mode PWM Controller
  • PWM/Analog Dimming Mode
  • Up to 1MHz Switching Frequency
  • Built-in Comprehensive Protections
  • Undervoltage Lock Out (UVLO)
  • Overvoltage Protection(OVP)
  • Overcurrent Protection(OCP)
  • Overtemperature Protection (OTP)
  • LED Open Protection
  • Output Short Protection
  • Low System BOM Cost
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The AL8841Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities.

Typical applications

  • Automotive LED Lighting EMC

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Z @ 100 MHz(Ω)
RDC(mΩ)
Type
Version
IRP,40K(A)
fres(MHz)
Size
ISAT,10%(A)
ISAT,30%(A)
Mount
Winding Style
Number of windings
L(µH)
Zmax(Ω)
IR(A)
RDC max.(Ω)
VR(V)
SamplesAvailability & Sample
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78279221601
SPECWE-MPSA EMI Multilayer Power Suppression Bead, 600 Ω, 50 mΩ
Simu­lation–
Availability
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Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

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ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MPSA EMI Multilayer Power Suppression Bead
Impedance @ 100 MHz600 Ω
DC Resistance50 mΩ
TypeHigh Current 
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–
–
Size1206 
–
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MountSMT 
–
–
–
Maximum Impedance610 Ω
Rated Current2.5 A
–
–
–Check availability
744228
SPECWE-SL2 SMT Common Mode Line Filter, –, –
Simu­lation
Availability
–
Downloads8 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

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ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-SL2 SMT Common Mode Line Filter
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VersionSMT 
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–
–
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MountSMT 
Winding Stylebifilar 
Number of windings2 
Inductance25 µH
Maximum Impedance2800 Ω
Rated Current1 A
DC Resistance0.12 Ω
Rated Voltage80 V
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7447779127
SPECWE-PD SMT Power Inductor, –, –
Simu­lation
Availability
–
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
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VersionRobust 
Performance Rated Current2.1 A
Self Resonant Frequency15 MHz
Size7345 
Saturation Current @ 10%1.55 A
Saturation Current @ 30%1.9 A
MountSMT 
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Number of windings26.5 
Inductance27 µH
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Rated Current1.24 A
DC Resistance0.15 Ω
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74437349220
SPECWE-LHMI SMT Power Inductor, –, –
Simu­lation
Availability
–
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
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VersionSMT 
Performance Rated Current2.75 A
Self Resonant Frequency8 MHz
Size7050 
Saturation Current @ 10%4.15 A
Saturation Current @ 30%8.5 A
MountSMT 
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Inductance22 µH
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DC Resistance0.17 Ω
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–Check availability