Products of the Week: September 2, 2024

Sept. 2, 2024

Here's this week's selection of some of the most interesting new products that have been launched of late.

Diodes Incorporated's latest 12-channel, constant-current LED driver has 12 open-drain outputs rated to 24 V and can sink up to 60 mA with a fast transient response.

12-Channel LED Driver Has ±1% Channel-to-Channel Current Accuracy

Diodes Incorporated’s latest 12-channel, constant-current LED driver, the AL58221, has 12 open-drain outputs rated to 24 V and can sink up to 60 mA with a fast transient response. Operating with a 3- to 5.5-V input, the driver has a channel-to-channel LED current accuracy typically ±1% and a regulated output current tolerance of ±0.1%. It uses adaptive pulse density modulation (APDM) to help mitigate non-ideal I_OUT distortion and enhance visual refresh rates, and can be used for indoor and outdoor LED video lighting, signage, and displays.

The LED current is set by three external resistors with each channel’s average output current being programmed independently via its digital interface, with a 10-MHz, double-edge triggered data clock input to reduce EMI. The device’s two-wire serial interface sends grayscale data to the function-control registers that store the configuration information, controlling the grayscale resolution and clock frequency, current output waveform selection, and internal-latch function.

Using APDM increases the visual refresh rate of greater than 1,000 Hz at 16-bit and greater than 256 kHz at 8-bit grayscale, reducing flicker and providing output-current bilateral processing for EMI reduction. Features include a clock duty recovery technique with pulse retiming to support a longer distance connection, and its two-wire serial interface enables cascading for up to 1,030 devices. The AL58221 is available in the thermally-enhanced TSSOP-24EP (Type A1-B) package.

Alix Paultre | Editor-at-Large, Microwaves & RF

Alix is Editor-at-Large for Microwaves & RF.

An Army veteran, Alix Paultre was a signals intelligence soldier on the East/West German border in the early ‘80s, and eventually wound up helping launch and run a publication on consumer electronics for the U.S. military stationed in Europe. Alix first began in this industry in 1998 at Electronic Products magazine, and since then has worked for a variety of publications, most recently as Editor-in-Chief of Power Systems Design.

Alix currently lives in Wiesbaden, Germany.