TPS611781RNWT

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TPS611781RNWT is a DC-DC step-down power switch regulator from TI’s Green Point integrated power solutions that offers efficiency, performance and cost savings for applications such as networking, home automation, lighting, industrial power and mobility. It is a high-efficiency, low-power step-down DC-DC switch regulator with a wide voltage and current range, featuring an UltraLow quiescent current and low output ripple. This regulator is ideal for applications requiring high efficiency and low operating temperature, such as industrial and network power supplies, automotive power systems and LED lighting.

TI’s TPS611781RNWT has a wide input voltage range of 2.3V to 12V and an output voltage range of 0.8V to 5.5V, making it suitable for a wide range of applications. The device offers 1A of continuous load current and up to 3A of peak current, and is designed to minimize power dissipation and deliver up to 95% efficiency. It also features a proprietary analog dimming control that can be programmed with a variety of dimming algorithms for output current control, PWM dimming or frequency control.

The TPS611781RNWT is a synchronous step down converter with a high efficiency at light and medium load. Its input capability is from 2.3V to 12V and its switching frequency is adjusted by forced pulse-skipping mode to guarantee high power conversion efficiency. On top of that, the device provides fast current protection, under voltage lockout, and reverse current protection.

The working principle of the TPS611781RNWT is pretty simple and straightforward. The device features a wide input voltage range, an adjustable frequency operation and a constant on time control. When the device is powered on, the input voltage is connected to an internal clock which then generates a signal that is used to start SP switch. The average current from the switch then passes through an inductor, and the output voltage is obtained from the output capacitor after being rectified by a synchronous rectifier.

The TPS611781RNWT features several advanced features that enable it to improve power efficiency, minimize power dissipation, and simplify design complexity. It has an internally compensating circuit that allows it to operate with high accuracy and low noise. It also has a built-in programmable current limit that provides output current protection. Moreover, the device has a built-in power saving mode and a soft start function.

The TPS611781RNWT is a relatively low cost and efficient DC-DC switch regulator designed to meet a wide range of applications where a high efficiency and low operating temperature are critical factors. The device uses a proprietary analog dimming control to minimize power dissipation, and also provides several sophisticated protection features to avoid over-current, under-voltage and reverse current problems. Furthermore, the device is easy to design and implementation, and provides excellent performance and cost savings with its wide voltage and current range.

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