SG137K

SG137K Application Field and Working Principle

The SG137K is a general-purpose adjustable linear voltage regulator from Consolidated Electronic Components. It is used to supply power to digital circuits, analog circuits, and other components in industrial and consumer devices. This regulator provides a constant output voltage regardless of line, load, temperature, and time variations. The device offers a wide operating temperature range, overvoltage protection, low noise, and fast transient response capabilities.

Features

• Input voltage range: ±3.3V to 32V
• Output voltage range: 1V to 33V
• Output current capability: up to 1A
• Wide temperature range: -40°C to +110°C
• Quiet operation and excellent ripple rejection
• Overvoltage protection
• Fast transient response

Applications

The SG137K is suitable for a wide range of applications, including portable medical equipment, automotive electronics, communications systems, and industrial machines. It is especially suited for supplying regulated power for power amplifiers and other audio devices, providing accurate, low noise, and ripple-free operation.

Working Principle

The SG137K is an adjustable three-terminal linear regulator, which is ideal for use as a power supply in a wide range of high-current applications. The device includes an internal error amplifier and an internal pass transistor, both of which work together to provide a constant output voltage. The device operates by comparing the voltage on the ADJ pin to a reference voltage generated internally, and when the two are not equal, the error amplifier adjusts the gate voltage of the pass transistor to adjust the output voltage. The output voltage is set by the value of the external resistor connected to the ADJ pin.

Conclusion

The SG137K from Consolidated Electronic Components is an adjustable three-terminal linear voltage regulator, offering excellent performance and reliability in a wide range of high-current applications. It has a wide operating temperature range, overvoltage protection, low noise, and fast transient response capabilities. Its features make it ideal for supplying regulated power for power amplifiers, portable medical equipment, automotive electronics, communications systems, and industrial machines.