9-channel LED drivers

27 October 2010 Opto-Electronics

Diodes Incorporated has announced two new 9-channel LED drivers with internal charge pumps for backlighting of small LCD screens, keypads and LED lights.

Working from 2,7 V to 5,5 V and driving 20 mA, the applications include mobile phones and other portable consumer devices. Driving three groups of three LED channels and its three independent PWM dimmable control inputs, the AL3158 provides a simple drive for RGB LEDs. The AL3159 with its versatile 3-wire logic decoding of LED current control simplifies the driving of nine LEDs for illuminating LCD screens and LED indicator control.

The inductorless solution requires only three external capacitors to complete the driver circuit. High levels of functional integration coupled with thin QFN packages mean that these devices save board space and reduce manufacturing costs. The devices offer up to 93% power efficiency and feature 1% current matching accuracy between channels to deliver an even, consistent screen image. LED open- and short-circuit protection, thermal and under-voltage lockout and over-voltage protection are provided on all channel outputs to maximise reliability. A soft start function reduces power supply inrush current to extend battery operating life.

Further reading:

Enhanced breaker status and communication module
Schneider Electric South Africa Opto-Electronics
Schneider Electric has announced the launch of its new Breaker Status and Communication Module (BSCM) Modbus SL/ULP, which delivers enhanced performance, improved connectivity, and simplified integration for power distribution systems.

Read more...

---

Heat-resistant LEDs
Opto-Electronics
Würth Elektronik’s new RGB LEDs are characterised by excellent heat resistance with an insensitivity to temperatures from -40 to 100°C making them ideal solutions for reliable, colour-variable lighting in applications at high operating temperatures.

Read more...

---

PhotoMOS relays
Future Electronics Opto-Electronics
The AQY221R2SX and AQY221R2S PhotoMOS from Panasonic Industry ensures excellent characteristics and high-speed switching performance.

Read more...

---

Mouser now shipping onsemi’s image sensors
TRX Electronics Opto-Electronics
The AR0145CS is a 1/4,3-inch CMOS digital image sensor with a 1280 (H) x 800 (V) active-pixel array that can capture both continuous video and single frames.

Read more...

---

Adaptive optics’ power solution
Altron Arrow Opto-Electronics
Vicor power-dense adaptive optical modules enable colossal telescopes to look into the past for deep space discoveries.

Read more...

---

Ultra-high speed photo detection
Opto-Electronics
TDK Corporation has announced a photo-spintronic conversion element combining optical, electronic, and magnetic elements that can respond at an ultra-high speed of 20 picoseconds.

Read more...

---

High-speed lasers
RFiber Solutions Opto-Electronics
Macom are a high-volume manufacturer of lasers, deploying more than 100 million devices with a reliability of less than 50 FIT and greater than 100 years of wear-out lifetime

Read more...

---

High-performance optical interconnect
Opto-Electronics
STMicroelectronics has unveiled its next generation of proprietary technologies for higher-performing optical interconnect in datacentres and AI clusters.

Read more...

---

Halo mid-board optical transceiver
Spectrum Concepts Opto-Electronics
The Samtec Halo mid-board transceiver has been designed for next-generation embedded applications that require 56 and 112 Gbps PAM4 performance in low profile and ruggedised form factors.

Read more...

---

New generation of Ethernet media converters
IOT Electronics Opto-Electronics
Phoenix Contact is introducing three new families of media converters to the market, each designed for specific industrial environments and challenges.

Read more...

---