TLC5928PW

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LED drivers are an important component for the industry of battery-powered and light emitting diode (LED) applications. The TLC5928PW is a high efficiency, low-power LED driver from Texas Instruments that makes it possible to drive multiple LEDs from a single low-power supply. This application note describes the features and uses of the TLC5928PW and explains the details of how it works.

The TLC5928PW is a low-power LED driver that uses pulse width modulation (PWM) technology to control LED illumination. It features a 4-wire communications interface, multiple LED output channels, and a built-in low dropout (LDO) power regulator. The onboard PWM gives the user the ability to easily program the LED brightness levels. The TLC5928PW is designed to be operated in a battery-powered environment and provides high efficiency of up to 95% at low loads.

The TLC5928PW has a 4-wire communications interface which allows the processor to interact with and control the LED driver. It uses a low voltage serial control bus, which is generated by the processor and received by the TLC5928PW. This allows the processor to set the PWM frequency, duty cycle, and output current levels.

The TLC5928PW provides up to seven LED output channels. Each channel has independent control of the brightness level and current limiting. The output current is adjustable over a range of 4mA to 30mA. The brightness of the LEDs can be programmed to different levels by adjusting the duty cycle of the PWM output.

The onboard LDO regulator provides a low noise, low power solution for LED illumination. It operates within a wide input voltage range of 1.8V to 5.5V, and can be connected to a wide variety of power sources. Additionally, the LDO provides a low output voltage ripple and is capable of driving up to seven channels of LEDs without overload.

The TLC5928PW is an ideal solution for applications requiring low-power, high efficiency LED illumination. Its low-power operation and versatile PWM capabilities make it well suited for battery-powered applications and it can be easily integrated into a variety of systems. With its versatile features, the TLC5928PW is an efficient and economical solution for LED illumination.

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