HB LED driver targets high-power automotive lighting demands
The device's architecture offers comprehensive short-circuit protection, single-wire connection to LEDs, and internal frequency dithering. These features make it easier for designers to meet the demanding reliability requirements of high-power automotive lighting applications such as DRLs (daytime running lights), position lights, turn signals, and high-/low-beam assemblies.
The MAX16833 allows the design of more fault-tolerant, reliable LED driver applications. Thanks to its wide input-voltage range, it can sustain battery load-dump peaks up to 65 V during normal operation. The integrated high-side dimming p-channel MOSFET driver and high-side current-sense amplifier detect short-circuit events and protect the LEDs, the driver, and the battery if those events occur. This short-circuit protection is provided between the output and ground, and also between the input and output. Additionally, this architecture allows a single-wire connection to the LEDs, thus reducing LED-to-driver wiring cost and complexity. The MAX16833 also includes output overvoltage and overtemperature protections, as well as a fault-detection output.
Another feature is its internal frequency dithering, which improves EMI considerably, thus easing the board designer's task and reducing EMI filter component costs substantially. The MAX16833B version of this HB LED driver does not include this frequency dithering, but instead features a ±2 percent-accurate 1.64 V reference voltage output that can be used by other devices on the driver board.
Both versions are available in a thermally enhanced, 16-pin TSSOP package and are fully specified to operate over the -40 to +125 degrees Celsius automotive temperature range. Prices start at 1.53 US Dollars (1000-up, FOB USA).
- Energy-as-a-service: GE combines LED and energy businesses to offer solution
- Integrated 7.8 mΩ power switch handles 9A, with reverse-blocking
- Tektronix/Keithley adds high-current/power bench PSU variants
- Bulk capacitance on high-current PCB rails safely controlled with 30V MOSFET
- Fastest 600-V gate driver steps up power density
- 100-V MOSFETs optimize for PoE applications
- Wireless power made easy with plug-and-play reference kits
- Intersil acquires Great Wall Semiconductor, extends power MOSFET expertise
- 24-35 GHz communications system, medium-power driver amplifier
- TSMC pulls plug on solar business
- 40/60V FETs for cordless appliances add logic-level drive by MCU
- Full-bridge gate driver chips targets starter generator applications
- 1.5A, 15V synchronous boost regulator with output disconnect
- Energy harvesting power management IC addresses wireless sensors
- PA module delivers 10W microwave power at up to 18 GHz
- Will DIY spray-on solar cells be a reality soon?
- Porsche reveals prototype battery-driven sports car
- Transparent coating cools solar cells while boosting efficiency
- More-than-Moore will lead, argues GloFo's Wijburg
- Elon Musk targets high-volume solar panel dominance
- Dialog to acquire Atmel for USD4.6bn in IoT push
- Super-battery charges mobile devices in 15 seconds or less
- Hybrid solar panel roof helps slash energy bills
- Are mushrooms the answer to lithium-ion battery degradation?
- World efficiency record claimed for both sides-contacted solar cells
- DC-DC Conversion Handbook on GaN
- Heat helps rechargeable batteries extend lifetimes
- Report: Cypress preps bid to snatch Atmel from Dialog
- Next-Generation batteries - Can all-silicon anodes be commercially viable?
- Can electron superhighway drives organic solar panel innovations?
- Determine Balancing Current for the LTC3305 Lead-Acid Battery Balancer
- Testing PSRR with High-Frequency Ripple
- Why Making the Move from a Variable Transformer to a VariPLUS is the Right Decision
- A SEPIC Fed Buck Converter
- Minimizing the Impact of Source Resistance on High-Voltage DC to DC Converters
- Dual Phase Buck Controller Drives High Density 1.2V/60A Supply with Submilliohm DCR Sensing
- Battery Management System Tutorial