TLC59482DBQ

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TLC59482DBQ is an advanced 3-channel 16-bit DC/DC converter/light source illumination driver IC developed by Texas Instruments. It features PWM frequency dimming, an integrated current booster and multiple IC connections, making it an appropriate solution for applications that require driving large volumes of LEDs in a cascaded configuration.

This IC supports up to 44V and can drive three strings of 24 LEDs at 1A with ideal efficiency. TLC59482DBQ includes an integrated current booster, which enhances the drive current tolerance and enables a wider range of applications, such as automotive and industrial lighting. The IC features a 1.25MHz PWM frequency, resulting in smoother and quieter dimming. In addition, it offers a dynamic LED current control system with programmable, adjustable LED current for each LED string.

TLC59482DBQ can be used in a range of lighting applications, including automotive interior and exterior lighting, general-purpose indicator lights, industrial lighting, and backlighting displays. The device is also suited for design engineers developing applications that require complex lighting scenarios with higher brightness and longer duration.

The operating principle of TLC59482DBQ is based on a multi-mode architecture, which enables efficient and reliable control of multiple strings of LEDs. The chip integrates several small power MOSFETs with high efficient linear regulators for each channel. The linear regulators provide constant current to the LEDs, with automatic overvoltage protection, while the MOSFETs can be used as low-frequency drivers for low power, high-efficiency switching. The IC also integrates high-precision and extremely low noise phase lock loop (PLL) circuitry for RGB / W or dual white LED control.

To maximize efficiency, the device also incorporates a high-performance SMPS controller that supports burst mode for low noise and ultra-low power consumption, as well as a Class-D amplifier to regulate LED current accurately and without additional load. The device also features adaptive LED current and shutdown control, allowing current to be adjusted to suit different LED driving requirements.

In conclusion, the TLC59482DBQ is an advanced 3-channel 16-bit DC/DC converter/light source illumination driver IC that is suited for a range of applications, thanks to its integrated current booster, 1.25MHz PWM frequency, and wide operational voltage range. This PMIC - LED driver provides excellent lighting control, with automatic overvoltage protection and adjustable LED current for each LED string.

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