TI RGB LED drivers with zero audible noise for HMI apps
The new family of LED drivers have integrated, independent color mixing, brightness control and a power-saving mode. The LP5018, LP5024, LP5030 and LP5036 enable smooth, vivid color and reduce system power consumption.
The 29 kHz dimming frequency used in the new LED drives will assure to eliminate the noise typically heard when dimming lights. This high frequency, above the human-audible range will allow designers to make applications that use Human-Machine interfaces.
Additionally, designers can achieve smoother color and brightness-level adjustments compared to standard pulse-width modulation (PWM) solutions, by taking advantage of the devices’ integrated 12-bit PWM generator.
Key features and benefits of the LP5018, LP5024, LP5030 and LP5036 LED drivers
- High-resolution PWM dimming: The devices in TI’s LP50xx family integrate a 12-bit PWM generator that operates above a human-audible frequency, at 29 kHz per channel, enabling smooth, vivid color with zero audible noise.
- Ultra-low quiescent current: An integrated power-saving mode dramatically reduces power consumption to as low as 0.01 mA from the typical 9 mA offered in existing devices, improving total system efficiency in standby mode.
- Multichannel options: 18-, 24-, 30- and 36-channel options provide independent color mixing and brightness control, while three integrated, programmable banks enable simplified software coding and ease of design.
Tools and support to speed design
Designers can download LP50xx graphical user interface software to easily configure the LP5018, LP5024, LP5030 and LP5036 LED drivers. Engineers can jump-start their designs with the LP5024EVM and LP5036EVM evaluation modules.
See how to implement sophisticated lighting patterns for end equipments with a constant voltage supply using the “Various LED Ring Lighting Patterns” reference design. The design utilizes two LP5024 LED drivers to dynamically adjust brightness without impacting contrast ratios in ambient lighting situations.