SG137AT

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SG137AT application field and working principle

The SG137AT is an adjustable linear voltage regulator that provides a precise solution to many power management needs. It is specifically designed for applications requiring higher output currents, higher voltage accuracy and fast start-up and turn-on/off transient response. This device features an operating temperature range from -40°C to +85°C, which makes it suitable for industrial, automotive, and instrumentation applications.

The SG137AT is capable of regulating both positive and negative voltages, and can be adjusted from 0.8V to 28V with a 1% accuracy. It has three operating modes: constant voltage, constant current, and constant on/off. The constant voltage mode sets a precise output voltage regardless of load. The constant current mode provides a precise current limit without any negative voltages associated with the output voltage. The constant on/off mode turns on or off the output voltage based on an external voltage reference.

The working principle behind the SG137AT is to use an input voltage to regulate the output voltage. This is done through a series of transistors, resistors and capacitors. The precise resistance of the resistors and the precise capacity of the capacitors are used to control the output voltage. The output voltage is then monitored with a voltage regulation circuit and adjusted accordingly.

In addition to its precise regulation of output voltage, the SG137AT also features a low noise operation. The device has a response time of 25 µs to regulation changes and is capable of suppressing output noise below 50 mVp-p. The device features a high efficiency due to its low standby current consumption. It also has an output current limiting which ensures safe operation of the application.

The SG137AT is an excellent power management solution for a wide range of applications. It has a wide input voltage range, making it suitable for operation in laboratories, automotive, instrumentation, and industrial applications. The device provides a precise voltage regulation and a steady voltage output for all load conditions. Its low response time and low noise operation make it ideal for applications that require strict accuracy and stringent noise emission requirements.

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