TPS7133QP

The TPS7133QP is a linear voltage regulator specifically designed for low-noise, high-accuracy requirements. It is suitable for applications such as portable audio devices, digital TV, home theater systems, and similar products. The regulator is based on a 0.2 Ohm power MOSFET device and its internal voltage reference of 4.1V is accurate to ±1%. The TPS7133QP can handle up to 5A of output current and is capable of delivering a constant voltage output with proper input/output line regulation and no load current-drain. It is designed operating temperature range is -40°C to 85°C, and its specified maximum line transient sensitivity is less than 0.03%.

The TPS7133QP application field includes all kinds of electronic equipment that require low-noise, high-accuracy voltage regulation. Portable audio devices, digital TV, and home theater systems are all good targets, along with a range of other consumer electronics and industrial applications. The device is suitable for a variety of power supply designs, including those that use a 3.3V output voltage and those that use a 5V and 6V output voltage. It is especially suitable for power supplies that are connected to other equipment via wires, as its low-noise, high-accuracy features enable efficient power transmission.

The working principle of the TPS7133QP is based on its internal MOSFET device. When the input voltage is greater than the output voltage, the device will draw current from the input voltage source to produce a voltage drop across the 0.2 Ohm MOSFET device. This voltage drop is regulated and the feedback resistor helps to maintain a constant output voltage. When the input voltage is less than the output voltage, the device operates as a current sink and draws current from the output voltage supply, which is then regulated and maintained. The regulator also features a cycle-by-cycle limit current protection and a thermal shutdown circuit, which protect the device from overcurrent and overheating.

In summary, the TPS7133QP is an ideal choice for applications requiring low-noise, high-accuracy voltage regulation. Its high efficiency allows it to be used with a variety of power supply designs, including those with a 3.3V and 5V/6V output voltage. The device is designed to operate in the temperature range of -40°C to 85°C, with a maximum line transient sensitivity of less than 0.03%. It also features a cycle-by-cycle limit current protection and a thermal shutdown circuit, making it a reliable, low-noise, high-accuracy voltage regulator for consumer electronics and industrial applications.