TLD55012QVXUMA1

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TLDR55012QVXUMA1 is a member of Monolithic Power System’s (MPS) Pulse Width Modulation (PWM) buck regulators family of products. This family of buck converter devices enables precise external adjustments to achieve an accurate voltage output. The family consists of synchronous buck regulators, allowing users to choose between fixed frequency and adjustable frequency devices, each offering full-featured protection modes and external sensible parameter settings.

This product offers a wide input voltage range of 1.2V-5.5V, an output current of up to 1A, and an output voltage range from 1.1V to 85% of the input voltage. Its 1.6MHz switching frequency and excellent transient performance is ensured thanks to its low output voltage coefficient. It also features excellent resistance to transient voltages and adaptive protection modes, making it suitable for today’s dynamic battery-operated applications such as handheld devices, and wearables.

The TLDR55012QVXUMA1 is an ideal driver for LED based applications, such as in general lighting, smart lighting, automotive lighting, traffic light, and indicators. It is optimized for high efficiency and is capable of generating pulses of up to 1MHz frequency. The LED output is current regulated, and doesn\'t require any additional external control elements to prevent over-voltage or over-current conditions. With built-in frequency synchronization, it can be programmed to operate in either constant-pulse mode for highest efficiency and maximum power transfer to the LED, or in constant-current mode for more constant lighting.

This product features an optimized architecture of a buck converter, with a low-side synchronous MOSFET, high-side MOSFET, oscillator, error amplifier, and loop compensation network incorporated in the design. During the operation, the current circulating between the high-side and low-side MOSFETS is measured and used to regulate the output voltage. The switch time of the clock is determined by the frequency of the oscillator, which in turn determines the output voltage. As the input voltage changes, the drain current of the high-side MOSFET is regulated by the ramp signal generated by the error amplifier in the feedback loop, so that the output voltage is constantly regulated.

The TLDR55012QVXUMA1 utilizes a high switching frequency and is easy to implement, providing users with a compact and reliable LED driver solution. It is able to operate under extreme temperatures, and is suitable for a wide range of applications, as it can accept inputs from various power sources. By combining the wide input voltage range and low voltage drop, this device is a good choice for applications where small size and energy efficiency is the primary concern.

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