Flickerless LED driver

PCB supporting a pair of LEDs in the LZ1 LuxiGen package from OSRAM. The PCB includes a flickerless LED driver allowing it to adjust LED brightness with a potentiometer. This design can be easily adopted to other LEDs and eventually can become a custom LED driver providing precise lighting for machine vision applications.

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Manufacturer	Manufacturer part number	Description
Monolithic Power Systems	MP2483DQ-LF-P	LED driver
Diodes Incorporated	AP62301Z6-7	DC-DC Switching Synchronous Buck Regulator, Adjustable, 4.2V-18Vin, 0.8V-7V/3A out, SOT-563-6
Multicomp Pro	MJ-179PH	DC Power Connector, Jack, 4 A, 1.95 mm, PCB Mount, Through Hole
GCT	USB4105-GF-A	USB-C (USB TYPE-C) USB 2.0 Receptacle Connector 24 (16+8 Dummy) Position Surface Mount, Right Angle
JST Automotive Connectors	SM02B-SRSS-TB(LF)(SN)	Rectangular connector, header
Vishay	B360A-M3/61T	Schottky Rectifier, 60 V, 3 A, Single, SMA, 2 Pins, 720 mV
OSRAM	LZ1-00R802-0000	LED, Infrared (IR), SMD, 4-SMD, 1 A, 1.6 V, 1050 nm
Johanson Technology	160R15X106KV4E	SMD Multilayer Ceramic Capacitor, TANCERAM®, 10 µF, 16 V, 0805 [2012 Metric], ± 10%, X5R
Murata	GRM188R60J226MEA0D	SMD Multilayer Ceramic Capacitor, 22 µF, 6.3 V, 0603 [1608 Metric], ± 20%, X5R, GRM Series
TDK	C1608X5R1V225K080AC	SMD Multilayer Ceramic Capacitor, 2.2 µF, 35 V, 0603 [1608 Metric], ± 10%, X5R, C Series
Murata	GRM155R61H104KE14D	SMD Multilayer Ceramic Capacitor, 0.1 µF, 50 V, 0402 [1005 Metric], ± 10%, X5R, GRM Series
Würth Elektronik	885012005018	SMD Multilayer Ceramic Capacitor, 1000 pF, 10 V, 0402 [1005 Metric], ± 5%, C0G / NP0, WCAP-CSGP
TDK	C1608X5R1E106M080AC	SMD Multilayer Ceramic Capacitor, 10 µF, 25 V, 0603 [1608 Metric], ± 20%, X5R, C
SR Passives	R0141-2-20k	Rotary potentiometer
Bourns	CR1206-FX-0R20ELF	SMD Chip Resistor
Multicomp Pro	MCMR12X000_PTL	Zero Ohm Resistor, Jumper, 1206 [3216 Metric], Thick Film, 250 mW, 2 A, Surface Mount Device
Bourns	CR0402-FX-1000GLF	SMD Chip Resistor, 100 ohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-2202GLF	SMD Chip Resistor, 22 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-3902GLF	SMD Chip Resistor, 39 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-1802GLF	SMD Chip Resistor, 18 kohm, ± 1%, 63 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-2001GLF	SMD Chip Resistor, 2 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0603-FX-3003ELF	SMD Chip Resistor, 300 kohm, ± 1%, 62.5 mW, 0603 [1608 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-2002GLF	SMD Chip Resistor, 20 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-6801GLF	SMD Chip Resistor, 6.8 kohm, ± 1%, 63 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-1301GLF	SMD Chip Resistor, 1.3 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose

Name	Type	Material	Thickness[mm]	Constant
F.Mask	Top Solder Mask		0.01
F.Cu	copper		0.035
dielectric 1	core	FR4	1.51	4.5
B.Cu	copper		0.035
B.Mask	Bottom Solder Mask		0.01

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Flickerless LED driver