Diodes Incorporated’s products are well recognized for their simplicity, cost effectiveness, high efficiency, and incredible versatility to cover a wide range of LED lighting and solutions, such as:
- • Automotive-compliant LED Drivers
- • Connected LED lighting
- • Industrial LED lighting
- • Power drivers
- • Infotainment display drivers
- • Triac dimmable and offline LED drivers
These highly efficient LED solutions extend the life of the automotive lighting system, enable greater driver and pedestrian safety, and enhance the driving experience. Our connected lighting solutions provide low standby power, increased efficiency, and high integration with buck, boost, buck-boost, and flyback topologies with main input voltages of 120Vac and 230Vac.
Our drivers utilize optimized transient response to meet the requirements of MCU, BLE, ZIGBEE, and Wi-Fi communications. These devices operate in a wide voltage range of 30Vac up to 277Vac, and combine robust low thermal packages with high-power density for industrial dimmable lighting and power applications. Integrated switching MOSFET LED drivers are capable of delivering LED currents of up to 3A, with operating DC voltages up to 400V. Controllers can also deliver higher voltage and power using an external MOSFET.
Diodes’ infotainment display drivers enhance the user-interface display experience with best-in-class features for backlight, AMOLED bias supply, and camera flash solutions in personal electronic and automotive applications. To extend battery life while reducing board space and BOM cost, these drivers maintain a compact solution while providing wide input/output voltage range, high dimming ratio, selectable switching frequency, fault protection notification, and digital interfacing. Triac dimmable and offline LED drivers provide the most cost-effective and quality solutions for retrofit bulbs and commercial LED lighting systems.
To help customers build innovative, reliable, and cost-effective products, Diodes also offers design tools and solutions that will calculate and optimize system performance.
- The Diodes Advantage
- • High-performance, high-temperature LED drivers in low thermal impedance packages qualified to AEC-Q100
- • High-accuracy LED control: 1% reference tolerance for better brightness control and matching between lamps
- • Multi-topology devices using one sense resistor, suitable for buck, boost, and buck-boost lighting
- • LED current thermal management reduces ILED at high temperatures, improving reliability
- • Diagnostic feedback pins provide fault status for MCU on-board
AL5801 - 100V adjustable-current linear LED driver simplifies low power LED control
Needing only two additional components, the AL5801 linear LED driver enables designers to simplify automotive interior, signage, and general lighting control circuits. Comprising a 100V rated N-channel MOSFET and pre-biased NPN transistor, this small footprint is packaged in the SOT26 and will drive chains of up to thirty low-power series-connected LEDs with currents from 20mA to 350mA. The AL5801’s open-drain output will operate between 1.1V and 100V, ensuring that common 12V, 24V, and 48V power rails are catered to while the LED current is set using an external low value resistor.
By generating a 0.56V reference voltage across the resistor, the driver’s internal control transistor helps minimize power losses and ensures a sufficient supply voltage margin. By virtue of the reference voltage’s negative temperature coefficient, the output current is also automatically reduced at higher temperatures, helping to protect the LED chain from any damage, and thus improving overall circuit reliability. In addition, the AL5801’s wide operating temperature range, of -40ºC to +150ºC, means it can be mounted immediately adjacent to LEDs where PCB space is tight.
- The Diodes Advantage
- • Provides low cost, space-saving solution for driving LED currents up to 350mA
- • Current is set with one external resistor, reducing total part count and cost compared to other devices
- • Negative temperature coefficient automatically reduces LED currents at high temperatures, protecting LEDs and improving circuit reliability
- • Low reference voltage of 0.56V minimizes power loss in LED current setting resistors and ensures supply voltage headroom
- • Wide ambient temperature operating range of -40ºC to +150ºC enables device to be circuit mounted very close to the LEDs in space-limited applications
Applications
- • LED signs
- • Automotive interior lamps
- • General illumination
- • Emergency lighting
DLD101 - 1A rated linear mode constant current LED driver
The DLD101 is a 1A rated, linear mode, constant current driver specifically designed for driving LEDs in illumination and indication applications that require DC current regulation. The LED current is programmed with one external resistor, offering a low-cost and space-saving solution. The device has been configured using optimized discretes in the thermally efficient DFN package. This flat and leadless DFN package saves board space and allows for higher integration to the PC board. The package is also thermally efficient and provides higher power dissipation than the relatively comparable SOT23 form-factor.
The DLD101 maintains increased light intensity output of the LEDs and lower bias current than ones provided by BJT pass elements. It also uses a unique PBT or double-base connection BJT to incorporate bias resistors into the package. For example, an external capacitor can be attached across the base resistor for added circuit flexibility.
- The Diodes Advantage
- • Flat, leadless DFN package saves board space, allowing for higher integration of PC board
- • DFN package provides higher power dissipation than relatively comparable SOT23 form-factor
- • High drain current MOSFET element for increased light intensity output of the LEDs and lower bias current than provided by BJT pass elements
- • Utilizes unique PBT or double-base connection BJT to incorporate bias resistors into package, providing added circuit flexibility
- • Lower part count and lower total cost compared to other devices
Applications
- • Flashlights
- • Garden lights
- • Signage
- • Emergency lights
- • LED lights
- • Back lighting applications
AL5890 - High-Voltage Linear Constant Current LED Driver
The AL5890 is a 400V constant-current LED driver that provides a cost-effective two-pin solution. The device has good temperature stability and current accuracy of <±2.0mA (typ.) regulated over a wide voltage and temperature range. The AL5890 comes in various or pre-fixed output current options, removing the need for external current setting resistors and creating a simple driver solution for the LED series. It supports both high-side and low-side driving of LED chains, turns on when the voltage between IN and OUT is greater than 7V, and supports lone LED chain application up to 400V (operating voltage subject to package thermal limitation). The AL5890 has thermal foldback protection, which enhances system safety at high temperatures. The device is available in the thermally robust PowerDI®123 (Type B), SOT89-3L, and TO252-3L packages.
- The Diodes Advantage
- • Integrated power transistor with output current up to 40 mA
- • Small form factor to minimize design space and save cost
- • 400V Operating Voltage
- • Supports both 120Vac and 230 Vac system
- • Available in PowerDI123, SOT89 and TO252 package
- • Available in compact and thermal packages for size-constrained applications
- • LED current tolerance over a wide temperature range: < ±2.0mA (typ.)
- • Good LED current accuracy: 5% @40mA
- • Thermal foldback protection automatically reduces LED current to prevent system overheat
Applications
- • Commercial LED lighting fixtures
- • Emergency lighting
- • Signage, downlights, decorative and architectural lighting
AL5809 – Simple Two Terminal ±5% Constant Current Linear Regulator
The AL5809 is used across a temperature range of -40°C to +125°C with an operating voltage (between the two terminals) of 2.5V to 60V. It is offered in various fixed output current versions, which removes the need for external current-setting resistors and inductors.
The AL5809 delivers LED currents with ±5% precision over a wide temperature range. Its PowerDI123 package provides 1.2W maximum power dissipation with excellent 20ppm/°C temperature stability and high-power supply rejection ratio. The device simplifies LED lighting solutions in LED signage, LED strip lighting, and low-current retrofit lamps.
The PowerDI123 package’s fixed-output current options are: 15mA, 20mA, 30mA, 40mA, 50mA, 60mA, 90mA, 120mA, and 150mA.
The alternative SOD123 package’s current output options are: 15mA, 20mA, 30mA, 40mA, and 50mA.
- The Diodes Advantage
- • Simple two-terminal, constant-fixed-current, linear solution that reduces BOM cost
- • Easy to use with no external setting resistors and inductors
- • Low temperature drift and high-power supply rejection of ±5% for LED current tolerance to overtemperature
- • PowerDI123 and standard SOD123 packages provide a robust and small footprint of up to 1.2W maximum power dissipation
- • Wide temperature range of -40°C to +125°C
- • Operating voltage (between the two terminals) of 2.5V to 60V
- • Wide selection of fixed-current options: 15mA, 20mA, 30mA, 40mA, 50mA, 60mA, 90mA, 120mA, and 150mA
Applications
- • LED signage
- • LED strip lighting
- • Instrumentation illumination
- • White goods
- • Retrofit LED lamps
BCR430U - High-Precision Linear LED Driver IC
The BCR430U provides designers with ultra-precise, constant-current regulation for LED modules used in illumination applications where matching, uniform light output is important. Providing a robust and stable output, the BCR430U drives LED strings and strips with 5mA to 100mA (±5%) across supply voltages from 5V to 42V and output voltages from 0.5V to 40V. Requiring no external drive transistor or any stability capacitors, the device simplifies designs and reduces component costs. The device’s industry-leading 115mV, ultra-low voltage drop (typ.), and 285µA consumption mean greater system efficiency with flexibility to drive more LEDs, compared to similar solutions.
- The Diodes Advantage
- • Low saturation voltage
- • Ultra-low voltage drop of 115mV means more voltage headroom is available to drive an extra LED in each string
- • Matched lighting output maintains precise LED current within ±5% across operating temperatures and supply voltages (from 5V to 42V)
- • Flexible current regulation
- • Desired LED current is easily set between 5mA and 100mA
- • Increased safety and LED longevity
- • Thermal protection reduces LED current at elevated temperatures
- • Increased reliability
- • Robust output protects from issues such as LED leakage voltages, supply transients, manual handling errors, etc.
- • Supports larger arrays and brighter LEDs
- • High-power output capable of up to 1W and supports paralleling
Applications
The BCR430U targets 12V and 24V linear LED strips and panels in:
- • LED strip/string modules
- • Signage lighting
- • Architectural lighting
- • Undercounter lighting
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