TL5001AQDRG4 Integrated Circuits (ICs)

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The TL5001AQDRG4 is an integrated short-circuit protection and frequency control, synchronous step-down DC/DC switching controller. It is designed for high-efficiency and high-current, low-voltage systems, such as in white goods, tablet PCs, and automotive applications. With the device’s features, two output voltages can be set without the need for any external components.

Application Field

The TL5001AQDRG4 synchronous buck DC/DC switching controller is ideal for applications that need to operate from a wide input voltage range and require high-efficiency, high-current, and low-voltage output. It is mostly used for factory automation, LED drivers, and in power application circuits like LCD displays, automation and scientific radios, and a range of other devices. Additionally, the device is optimized and characterized to safely and quickly power logic circuitry, while offering multiple protection features. This makes it a reliable, cost-effective solution for many applications.

Working Principle

The TL5001AQDRG4 synchronous buck DC/DC controller uses a unique pulse-width modulation (PWM) technique to generate a low-noise output voltage. It has an internal Gate drive circuit, enabling it to respond to small load changes that are necessary in applications such as LED drivers. This device’s frequency is adjustable through an external resistor, allowing tuneable frequencies to be chosen to optimize efficiency. By using a partial external power supply, the operating temperature range for the device is increased.

The TL5001AQDRG4 has current sensing and over-current protection for both the high-side and low-side of the switch. It also has under-voltage lockout features to prevent the regulator from sourcing current without proper startup. An internal oscillator allows the switching frequency of the buck converter to be programmed externally, adjusting the condition of the voltage regulator. The TL5001AQDRG4 also includes a programmable Soft Start mechanism to reduce inrush current when the device initializes.

Conclusion

The TL5001AQDRG4 synchronous buck DC/DC switching controller is designed for a wide range of high-efficiency, high-current, and low-voltage applications. It features an adjustable output voltage without needing any external components, along with a wide operating temperature tolerance and multiple protection features. With its low-noise PWM technology and adjustable switching frequency, the TL5001AQDRG4 is a reliable, cost-effective solution for factory automation, LED drivers, power application circuits, and a wide range of other devices.

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