STMicroelectronics Offers Single-chip Approach to LED Control

Mar 12, 2005

STMicroelectronics has introduced a set of single-chip LED driver ICs for industrial lighting, signage and transport applications.
The Power Logic STPxxC596 and STPxxCL596 family integrates the functions needed to drive LEDs at a constant current, set by an external resistor. Once set, a feedback mechanism monitors the current in one LED or a string of LEDs and dynamically adjusts the output to maintain the programmed current level.

The parts are available in eight or 16 output versions, with 3.3V and 5 V input voltages and four package types. The parts accept serial data through Serial Peripheral Interface (SPI) and use an internal shift register and latches to set the data for each of the LED outputs. An output enable controller can switch each LED on or off, dim it or make it flash. The parts have a clock and data re-synchronization function, which is useful when the devices are cascaded (daisy chain configuration).

The output current of the parts is programmable from 15mA up to 120mA (with a 5V supply). The device can work with a power supply from 3.3V up to 5V, which means it can be directly controlled by a microprocessor or logic circuit without level translators.

The STP08C596 has eight output channels, each of which can provide 15 to 120mA constant current to drive the LEDs. It is available in DIP-16, SO-16 and TSSOP16.

The STP08CL596 has eight output channels, each of which can provide 15 to 90mA constant current to drive the LEDs. It runs from a 3.3V supply and is available in DIP-16 and SO-16.

The STP16C596 has 16 output channels, each of which can provide 15 to 120mA constant current to drive the LEDs. It is available in DIP-24, SO-24, TSSOP24 and the thermally efficient exposed-pad TSSOP24.

The STP16CL596 has 16 output channels, each of which can provide 15 to 90mA constant current to drive the LEDs. It runs from a 3.3V supply and is available in DIP-24, SO-24, TSSOP24 and the thermally efficient exposed-pad TSSOP24.

Pricing ranges from US$0.64 to US$0.93 in quantities of 10,000 pieces.

Explore further: Festo has BionicANTs communicating by the rules for tasks

add to favorites email to friend print save as pdf

Related Stories

Mission studies the Sun in soft X-rays

Mar 24, 2015

At any given moment, our sun emits a range of light waves far more expansive than what our eyes alone can see: from visible light to extreme ultraviolet to soft and hard X-rays. Different wavelengths can ...

APPLE EVENT LIVE: The watch, a gold MacBook, HBO on iPhone

Mar 09, 2015

Make calls, read email, control music, manage Instagram photos, keep up with your workout, pay for groceries, open your hotel room door. CEO Tim Cook says you can do it all from your wrist with Apple Watch—for ...

Fluid-filled pores separate materials with precision

Mar 06, 2015

In nature, pores can continuously control how a living organism absorbs or excretes fluids, vapors and solids in response to its environment; for example, tiny holes invisible to the naked eye called stomata ...

Argonne research expanding from injectors to inhalers

Mar 04, 2015

There is a world of difference between tailpipes and windpipes, but researchers at the Department of Energy's Argonne National Laboratory have managed to link the two with groundbreaking research that could ...

Recommended for you

Festo has BionicANTs communicating by the rules for tasks

2 hours ago

Germany-based automation company Festo, focused on technologies for tasks, turns to nature for inspiration, trying to take the cues from how nature performs tasks so efficiently. "Whether it's energy efficiency, ...

Jury decides Silicon Valley firm did not discriminate

3 hours ago

A jury decided Friday that a prestigious venture capital firm did not discriminate or retaliate against a female employee in a case that shined a light on gender imbalance and working conditions for women ...

Intel in talks with Altera on tie-up

3 hours ago

US tech giant Intel is in talks with rival Altera on a tie-up to broaden the chipmaker's product line amid growth in Internet-connected devices, the Wall Street Journal reported Friday.

Amazon says FAA drone approval already obsolete

6 hours ago

The approval federal aviation officials gave Amazon.com last week to test a specific drone design outdoors is already outdated, the company's top policy executive said Tuesday in written testimony to a Senate subcommittee.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.