Triple-output driver for tricolour LEDs

19 September 2007 Opto-Electronics

Specifically designed to drive tricolour RGB (red, green, blue) LEDs for fun lighting or enhanced LCD backlighting in portable applications such as cellphones and MP3 players, the new NCP5623 from ON Semiconductor is a high efficiency triple-output LED driver with I²C interface and built-in gradual dimming.

The NCP5623 performs autonomous operations upon the command of the processor via its I²C interface. Its three independently controlled current outputs - with ±0,5% typical matching tolerance and 32 current levels - allow the display of more than 32 000 colours with a tricolour RGB LED. The device's integrated gradual dimming feature progressively increases or decreases output current to produce a theatrical fade-in/fade-out effect. The use of a logarithmic current profile ensures the light and colour changes appear smooth and linear to human eyes.

To help maximise battery life in portable applications, the NCP5623 achieves 94% peak efficiency with less than 1 μA standby current over the operating range of a lithium-based battery. Despite the small IC package (2 x 2 x 0,55 mm LLGA-12), the device requires only four passive components to operate in a typical application. It also features short-circuit and over-voltage protection, which protects the system in case of LED failure.

Further reading:

Compact direct Time-of-Flight 3D LiDAR module
Altron Arrow Opto-Electronics Electronics Technology AI & ML
The VL53L9 from STMicroelectronics is the first direct Time-of-Flight (dToF) 3D LiDAR all-in-one module in ST’s portfolio, offering a resolution of 2,3K zones, wide field of view, on-chip processing, 100 frames per second, and sensing range from 5 centimeters to 9 meters.

Read more...

---

Easy to integrate, quick to react
Opto-Electronics
Würth Elektronik has expanded its range of WL-ICLEDs – RGB-LEDs with integrated controller – to include dual-wire ICLEDs.

Read more...

---

Industrial time-of-flight proximity sensor
EBV Electrolink Opto-Electronics
STMicroelectronics’ VL53L4ED is a compact, high accuracy time-of-flight proximity sensor designed for industrial and embedded applications that require precise short range distance measurement.

Read more...

---

Flexible enclosure lighting solutions
IOT Electronics Opto-Electronics
Phoenix Contact’s range of enclosure lights is designed to provide uniform illumination throughout control cabinets, while offering flexible installation and energy-efficient operation.

Read more...

---

Industry’s smallest laser firing system IC
Opto-Electronics
Silanna Semiconductor recently announced that its FirePower laser firing system ICs for smaller, more efficient LiDAR and rangefinder applications are available in production quantities.

Read more...

---

More light, greater efficiency, better growth
Würth Electronics South Africa Opto-Electronics
Würth Elektronik has expanded its WL-SMDC Horticulture product line with new LEDs with wavelengths of 450, 660, and 730 nm in the 3535 package.

Read more...

---

Intelligent control boosts tunnel safety
IOT Electronics Opto-Electronics
Intelligent tunnel lighting systems are helping operators by delivering adaptive illumination that enhances both safety and energy efficiency.

Read more...

---

Case Study: Turning data into insight
Hamamatsu Photonics UK Editor's Choice Opto-Electronics
Hamamatsu Photonics’ InGaAs PIN photodiode detector has proven consistent, reliable, and robust for more than a decade, helping Axetris to deliver stable, repeatable measurements.

Read more...

---

Reliable imaging for industrial applications
Vepac Electronics Opto-Electronics
Combining a high-performance camera with an integrated high-speed processor, these compact systems enable advanced image sensing directly at the device level.

Read more...

---

Panasonic Industry launches its first flat lens, high-performing PIR sensor
Opto-Electronics
Panasonic Industry has announced the launch of its latest innovation in PIR motion sensors: the Flat Wide Detection Type (12 lens), being the first product incorporating its new PaPIRs+ technology.

Read more...

---