TLC5917IDR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The TLC5917IDR is a custom built integrated PMIC (Power Management Integrated Circuit) designed to drive LEDs (Light Emitting Diodes). It has an internal high current voltage regulator and is designed to optimize efficiency and reduce power dissipation. The TLC5917IDR can drive up to 8 individual high-current LEDs, with a current up to 500mA each. It also has an integrated peak current sensing and maximum current limiting feature. It also has a digital interface and can be controlled by I2C or SPI protocol.

The TLC5917IDR is designed for versatility and its application field can vary depending on the LED’s requirements. It can be used for a variety of applications such as backlighting for LCD panels, cellular phones, and PDAs. It can also be used in automotive lighting, medical equipment, light fixtures, and in numerous other lighting applications. The circuit is also suitable for driving general on/off switching, such as controlling relays or transistors.

The working principle of the TLC5917IDR is relatively straightforward. The LEDs are connected in series, from one LED to the next, and the voltage has to be regulated in between each LED. A P-channel MOSFET (metal-oxide-semiconductor field-effect transistor) is connected in series between two LEDs, with the gate of the P-channel MOSFET being connected to the output of the voltage regulation loop. The P-channel MOSFET acts as a variable resistance, and by controlling the voltage at the gate, the current through the LEDs can be regulated.

The high-current voltage regulator is designed to maintain a bias voltage that is required to operate the integrated circuits. The TLC5917IDR provides various features such as peak current detection, maximum current limit, PWM dimming, and temperature sensing. It also includes an over-voltage protection circuit that shuts off the output when the voltage exceeds the specified absolute maximum rating.

The TLC5917IDR is a highly integrated and cost-effective IC for driving LEDs in various applications. Thanks to its versatile features, it can be used in various lighting fixtures, relays, transistors and other electrical and electronic control systems. It can also be used in low-power applications, thanks to its power-saving features.

The specific data is subject to PDF, and the above content is for reference