Datasheet AL8861Q (Diodes)
| Manufacturer | Diodes |
| Description | High Efficiency 40V 1.5A Automotive Grade Buck LED Driver |
| Pages / Page | 15 / 1 — AL8861Q. HIGH EFFICIENCY 40V 1.5A. AUTOMOTIVE GRADE BUCK LED DRIVER. … |
| File Format / Size | PDF / 666 Kb |
| Document Language | English |
AL8861Q. HIGH EFFICIENCY 40V 1.5A. AUTOMOTIVE GRADE BUCK LED DRIVER. Description. Pin Assignments. (Top View). ISENSE. VIN. GND. N/C. VSET
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AL8861Q HIGH EFFICIENCY 40V 1.5A AUTOMOTIVE GRADE BUCK LED DRIVER Description Pin Assignments
The AL8861Q is a hysteresis mode DC-DC step-down LED driver,
(Top View)
designed for driving single or multiple series of the connected LEDs efficiently from a voltage source higher than the LED voltage. The
ISENSE 1 8 VIN
device can operate with an input supply from 4.5V to 40V and provide an externally adjustable output current up to 1.5A for MSOP-8EP
GND 2 7 N/C
package. Depending upon supply voltage and external components,
EP T
this converter can provide up to 40W of output power.
GND 3 6 LX C U
The AL8861Q integrates the power switch and a high-side output
VSET 4 D 5 LX
current sensing circuit, which uses an external resistor to set the
O R
nominal average output current.
MSOP-8EP P
Dimming can be realized by applying an external control signal to the
W E
VSET pin. The VSET pin will accept either a DC voltage signal or a
N
PWM signal.
Applications
Automotive Interior LED Lamps The soft-start time can be adjusted by an external capacitor from the Automotive Exterior LED Lamps VSET pin to the ground. Applying a voltage of 0.2V or lower to the VSET pin can turn off the output and make the device enter into
standby state with low power consumption. The AL8861Q is qualified to AEC-Q100 Grade 1 and is automotive grade to support PPAPs.
Features
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 High Efficiency (>95%) LED Short-Circuit Protection Inherent Open-Circuit LED Protection Sense Resistor Short-Circuit Protection Over Temperature Shutdown Up to 1MHz Switching Frequency Pb-Free MSOP-8EP Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) AEC-Q100 Grade 1 Qualified (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. Refer to https://www.diodes.com/quality/. AL8861Q 1 of 15 May 2019 Document number: DS41798 Rev. 2 - 2
www.diodes.com
© Diodes Incorporated
The AL8861Q is a hysteresis mode DC-DC step-down LED driver,
(Top View)
designed for driving single or multiple series of the connected LEDs efficiently from a voltage source higher than the LED voltage. The
ISENSE 1 8 VIN
device can operate with an input supply from 4.5V to 40V and provide an externally adjustable output current up to 1.5A for MSOP-8EP
GND 2 7 N/C
package. Depending upon supply voltage and external components,
EP T
this converter can provide up to 40W of output power.
GND 3 6 LX C U
The AL8861Q integrates the power switch and a high-side output
VSET 4 D 5 LX
current sensing circuit, which uses an external resistor to set the
O R
nominal average output current.
MSOP-8EP P
Dimming can be realized by applying an external control signal to the
W E
VSET pin. The VSET pin will accept either a DC voltage signal or a
N
PWM signal.
Applications
Automotive Interior LED Lamps The soft-start time can be adjusted by an external capacitor from the Automotive Exterior LED Lamps VSET pin to the ground. Applying a voltage of 0.2V or lower to the VSET pin can turn off the output and make the device enter into
standby state with low power consumption. The AL8861Q is qualified to AEC-Q100 Grade 1 and is automotive grade to support PPAPs.
Features
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 High Efficiency (>95%) LED Short-Circuit Protection Inherent Open-Circuit LED Protection Sense Resistor Short-Circuit Protection Over Temperature Shutdown Up to 1MHz Switching Frequency Pb-Free MSOP-8EP Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) AEC-Q100 Grade 1 Qualified (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. Refer to https://www.diodes.com/quality/. AL8861Q 1 of 15 May 2019 Document number: DS41798 Rev. 2 - 2
www.diodes.com
© Diodes Incorporated
