Datasheet AL5814Q (Diodes)

AL5814Q AUTOMOTIVE COMPLIANT 60V LINEAR DIMMABLE LED CONTROLLER Description Pin Assignments
The AL5814Q is an 8-terminal adjustable linear LED controller (Top View) offering excellent temperature stability and output current capability. It works with a wide-input voltage range from 4.5V to 60V. With an external LED driving power device, its internal power dissipation is
VCC 1 8 VFAULT
minimized compared with traditional linear LED drivers. This makes it ideal for medium-to-high current automotive LED lighting applications.
REF 2 7 OUT T EP
The AL5814Q has internal output drive capability up to 15mA, which
VSET 3 6 SFAULT UC
enables it to drive external bipolar transistors or MOSFETs. It also provides the capability to drive longer LED chains with low dropout
GND 4 5 FB OD
voltage and multiple LED channels.
R
MSOP-8EP
P
VSET pin is used to directly set output current feedback level. Using a
W
resistor divider between REF pin and VSET pin, the output current
E
can be set. Additionally, the use of an NTC resistor allows the
N
creation of an accurate and configurable thermal fold-back behavior. The AL5814Q provides an LED-open detection feature through its VFAULT pin. If VFAULT is brought lower than 2.5V (by any one of the multiple LED channels going open), the AL5814Q’s output goes low turning off the external transistors. The device recovers when the open condition is removed. This ability of VFAULT to turn off the external transistors also allows PWM dimming of the LED current by adding PWM control signal on VFAULT pin. AL5814Q is available in the thermally enhanced MSOP-8EP package and is automotive-compliant, qualified to AEC-Q100 Grade 1, supporting PPAP documentation.
Features Applications
• Qualified to AEC-Q100 Grade 1 • Automotive Rear Lamps • Wide Input Voltage Range from 4.5V to 60V • Automotive Interior Lamps • Configurable LED Current Setting • Automotive Instrumentation Illumination • 5% Reference Voltage Tolerance Across Operating • Automotive Position Lamps Temperature • Automotive License Plate Illumination • Low Temperature Drift • 15mA Output Drive Capability for MOSFET or Bipolar Transistor • LED Open Protection Detected by VFAULT Pin • PWM Dimming Realized Through VFAULT Pin • LED Thermal Foldback Configured by VSET • Overtemperature Protection (OTP) • Input Undervoltage Lockout •
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
•
PPAP Capable (Note 4)
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 4. Automotive products are AEC-Q100 qualified and are PPAP capable. Automotive, AEC-Q100 and standard products are electrically and thermally the same, except where specified. For more information, please refer to https://www.diodes.com/quality/. AL5814Q 1 of 14 April 2019 Document number: DS41792 Rev. 1 - 2
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© Diodes Incorporated Document Outline Pin Assignments Description Applications Features Package Outline Dimensions Suggested Pad Layout