TB62755FPG,EL Integrated Circuits (ICs)

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EL application field and working principle of TB62755FPG is a Power Management IC (PMIC) – LED Driver, specifically designed for low cost and small size EL (Electro Luminescence) display drivers. EL, being a type of display technology, requires only a low voltage input for driving the light output, making it ideal for operating in cost-sensitive, low-power applications.

TB62755FPG consists of 4 high-efficiency voltage regulators, connected in a chain, which can drive up to 4 different EL driver mosfets. To ensure a stable operation for each of the 4 power regulators, the chip has a built-in Power Factor Correction (PFC) circuitry.

Optimized to operate at a low supply voltage, TB62755FPG has very low power consumption and features a high efficiency (up to 93%). The low voltage drop also enhances the overall power efficiency of the LED driver by reducing the switching losses of the voltage regulators. The chip is also equipped with a built-in temperature protection that prevents the LED driver from getting over heated.

Regarding applications, the TB62755FPG LED driver is well suited for small and low cost EL displays. The chip is highly integrated and requires no external components, so it can easily fit into compact displays. The chip can drive up to 32 EL lines with a total current of 32 mA. It also has a very low current/voltage ripple, making it suitable for driving both low and high brightness displays.

Regarding working principle, the chip works by converting the input voltage (5V or 3.3V) into a proper voltage level for driving the EL elements. Each EL line is connected to one of the four regulators in the chain, with the current being controlled by the PFC. When the voltage reaches the desired level, the current regulator in the chain enables the EL line. When the current reaches a certain level, the EL element starts to glow and the regulator shuts off.

In summary, TB62755FPG is aPMIC-LED Driver, specifically designed for low cost and small size EL (Electro Luminescence) display drivers. The chip is well suited for small and low cost EL displays, as it is highly integrated and requires no external components. It can drive up to 32 EL lines with a total current of 32 mA and has very low power consumption. The chip has a built-in Power Factor Correction (PFC) circuitry and temperature protection, ensuring a stable operation and preventing it from getting over heated.

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