TLC5928PWG4

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TLC5928PWG4 belongs to PMIC - LED Drivers, which majorly used for illuminating applications. TLC5928PWG4 device is an integrated circuit (IC) package of identical voltage source, low-voltage switch, boosting regulator and LED current controller. TLC5928PWG4 is offered in a myriad of varying functionality and features, making it simple to equip the primary LED light without a large power conversion circuit.

The key function of TLC5928PWG4 is to simplify the governing of current to LEDs that require precise current. This power management IC supports multiple LED configurations in series, parallel, independent and Group Switch Mode Control (GSMPC) to drive up to 16 channels at once. Additionally, its four operating modes, linear regulation, cyclic regulation, instantaneous regulated voltage and reset, grant users great flexibility in controlling the LED current.

TLC5928PWG4 achieves constant LED current with a regulating loop. The two external feedback resistors, R1 and R2, introduce a reference voltage signal, which is compared with with the internal 1.2V reference voltage signal in order to deliver accurate LED peak current. In this way, the TLC5928PWG4 provides the user with the ability to set the LED current according to the characteristics of individual LEDs by adjusting the feedback resistors.

TLC5928PWG4 comes with two power modes, low power mode (Sleep Mode) and high power mode (Boost Mode). The output voltage is configurable between 5V and 40V, achieving both low power and high power applications. Moreover, the pulse width modulation (PWM) of the output voltage is implemented with an internal arbiter so that users can control the duty cycle and shift the output frequency at an interval of 2MHz. A built-in reset function is also included in the device that serves as data protection.

In terms of energy saving and efficiency, TLC5928PWG4 offers ultra-low quiescent current consumption and logarithmic dimming level control feature. All of the above features merge together to deliver the highest LED current control accuracy and efficiency. Some applications where TLC5928PWG4 can be taken into consideration includes LED Street Lightings, LED backlight display, LED theatrical lighting and automotive LED headlights.

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