TPS71719DCKRG4

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TPS71719DCKRG4 linear voltage regulators are designed to provide highly-accurate, low-noise power supplies and low-dropout (LDO) regulation both gains and losses in systems requiring an output voltage up to 1.8 Volts and a maximum current of 1.5 Amps. This makes them particularly suitable for applications in industrial, automotive, military, and aerospace applications.

These linear voltage regulators feature an adjustable voltage monitor (AVM) architecture and fast load transient response, with a quiescent current of approximately 330 μA. Additional features include wide input voltage range, fast load transient response, flexibility to configure as a voltage source or voltage/current regulator, and a maximum operating temperature of 125 °C.

The application fields of TPS71719DCKRG4 linear voltage regulators include the following areas and applications:

• Industrial control and instrumentation: powering of embedded control systems, robotics.
• Automotive: vehicle body and engine control, broadcast, illumination and video systems.
• Military: high-reliability applications such as missile guidance and defense computing.
• Aerospace: flight control systems and other precision avionics.
• Telecommunications: network switching, broadband access, and base station power.
• Consumer electronics: reliable power supply for portable devices, tablets and PCs.

The working principle of TPS71719DCKRG4 linear voltage regulator is based on the linear amplifier configuration and closed-loop feedback loop using an error amplifier. In this configuration, the regulator compares the feedback voltage (FB) with the reference voltage (REF) and adjusts the negative feedback accordingly. The feedback voltage is routed to the Gate of a series pass transistor to control the output voltage. The load current flowing through the series pass transistor generates a voltage which is converted back into reference voltage - known as the Type III compensation structure.

The error amplifier monitors the output voltage and forces the voltage control loop to keep the output voltage constant. If the output voltage is higher than the nominal voltage, the error amplifier output signal should be lower to reduce the drain-source voltage of the series transistor and reduce the charging current. This results in a reduction of the output voltage. On the other hand, if the output voltage is lower than the nominal voltage, the error amplifier output signal should be higher to increase the charging current, thereby achieving the nominal output voltage.

The TPS71719DCKRG4 device can be used in a high-side configuration or a low-side configuration, depending on the power rail or load configuration. In a high-side configuration, the positive supply terminal is connected to the output voltage and the voltage regulator is connected to the negative supply terminal. In a low-side configuration, the voltage regulator is connected to the positive supply terminal and the load is connected to the negative supply terminal.

The TPS71719DCKRG4 device has a maximum operating temperature of 125 °C, which ensures reliable operation of the linear voltage regulator even in extreme ambient temperatures. In addition, the wide input voltage range allows the device to operate with supply voltages ranging from + 4.5 V to + 18 V. This makes it an excellent choice for high current applications.

In summary, the TPS71719DCKRG4 linear voltage regulator is a highly reliable and accurate device ideal for industrial, automotive, military and aerospace applications, which often require robust and efficient power supplies. It features a wide input voltage range, adjustable voltage monitor (AVM) architecture, fast load transient response and a maximum operating temperature of 125 °C.

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