S-1137D15-U5T1U

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The S-1137D15-U5T1U is a linear voltage regulator from the PMIC – Voltage Regulators – Linear category. It is designed to provide a regulated voltage to systems with an input voltage of 15 V, or up to 25 V when powered from an AC adapter. This voltage regulator is available in an industrial temperature range of -40°C to +85°C, and can be specified with a 1A output current.

Application

The S-1137D15-U5T1U linear voltage regulator is well suited for applications in low-voltage DC power supplies and power conditioning systems. It is also ideal for mobile and/or high-temperature applications where space is at a premium. Some typical system applications that the S-1137D15-U5T1U may be used in include computers, industrial and consumer electronics, industrial and medical equipment.

Features

The S-1137D15-U5T1U delivers high power efficiency and stable output voltage when compared to other linear voltage regulators. It offers a wide input voltage range to cover various DC and AC power inputs. The device is also designed with an under voltage lockout and current limiting features that allow for safe operation in a variety of environments. In addition, it offers a low power shutdown mode to reduce power consumption when the output voltage is not in use. Additionally, it has a thermal shutdown protection feature to ensure reliable operation in high temperature conditions.

Working Principle

The working principle of the S-1137D15-U5T1U linear voltage regulator is based on a chopper stabilization control concept. This concept uses two switching transistors to chop the input voltage into two equal parts that are then combined and combined again in the output stage. The regulation is done using the two transistors in the output stage. The voltage feedback loop, along with an internal reference voltage and hysteresis, provide good regulation accuracy and very slow loading of the input voltage.

The power MOSFETs in the output stage of the S-1137D15-U5T1U can switch between high frequency and low frequency operation, to match the varying load conditions and maintain the output voltage setpoint. In high frequency mode, the power MOSFETs produce a very low ripple voltage and higher output current. When operating in low frequency mode, the power MOSFETs output a higher ripple voltage but also a higher current.

During normal operation, the output is kept regulated by comparing the reference voltage with the feedback voltage. If the feedback voltage is lower than the reference voltage, then the transistors turn on, increase the output voltage, and turn off after a predetermined period of time. This process ensures that the output is kept regulated at the desired voltage.

The S-1137D15-U5T1U also offers several protection features including output current limiting, input under-voltage lockout, and thermal shutdown. The device is also designed with EMI suppression, so that it can be used in electrically noisy environments without introducing any additional interference.

Conclusion

The S-1137D15-U5T1U is a high power, high accuracy, low-noise linear voltage regulator. Its wide input voltage range and low power consumption make it ideal for a variety of applications in industrial and consumer electronic systems. Its chopper stabilization control concept helps ensure high efficiency, excellent output voltage stability, and high current capability. Its safety features are designed to keep the device and system safe during operation, and its EMI suppression technology can help reduce any potential interference issues.

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