TPS61054YZGT

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The TPS61054YZGT is a highly integrated PMIC – LED Drivers designed for portable applications demanding high efficiency, high level of integration, and robustness. This product offers a high peak current of 1.3A allowing for an efficient and simple drive of a single string of LEDs in series or consecutive strings of LEDs in parallel. It is ideal for general lighting and small display applications.

The TPS61054YZGT offers a wide range of application fields:

• Backlighting for small to medium LCDs
• Laptop LCD backlighting
• Home appliance LCD backlighting
• Display backlight
• Tablet backlight
• Automotive lighting
• Automotive instrument cluster backlighting
• Industrial lighting

Additionally, the TPS61054YZGT is well suited for use in other applications such as LED bias (constant current) for indicator LEDS, LED backlighting, and power management for devices that require a low quiescent current such as digital cameras and video devices. It also features a wide input voltage range of 3V–17V which makes it applicable for various battery-operated products.

The working principle of the TPS61054YZGT is based on its PWM-controlled input current to ensure that a constant current is delivered to the LED with the help of a light feedback resistor. The LED current is controlled using the programmable FB (feedback) pin voltage. When a high enough voltage is reached, the internal PWM controller is activated, and the LED current is regulated. A 1.3A peak current can be achieved by using this method.

The TPS61054YZGT also supports an enable/disable feature that allows the application to completely shutdown the LED current, preventing excess heat and heat dissipation. Moreover, when enabled, the TPS61054YZGT can be configured for different dimming ranges and top-of-table level to help designers reach their power requirements and adjust their system performance. It also supports thermal shutdown, short circuit protection, and over-temperature protection.

In conclusion, the highly integrated PMIC – LED Drivers – TPS61054YZGT is a robust and high performing solution for general lighting and small display applications. It allows for 1.3A peak current and a wide range of application fields, including backlighting for small to medium LCDs, laptop LCD backlighting, home appliance LCD backlighting, display backlighting, tablet backlighting, automotive lighting, and LED bias (constant current) for indicator LEDS, LED backlighting, and power management.

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