LT8630IFE#TRPBF

LT8630IFE#TRPBF Application Field and Working Principle

This article categorizes the LT8630IFE#TRPBF as a DC-DC switching regulator voltage regulator from the Power Management IC (PMIC) family. It discusses the LT8630IFE#TRPBF application field, describing typical uses and target markets; and it explains the working principle of the product.

1. Application Field for the LT8630IFE#TRPBF

The LT8630IFE#TRPBF is an integrated, high-performance, synchronous buck switching voltage regulator. It is a compact device with a power range of 3 A (6 A peak) and capable of delivering up to 15 W at 12 V output, ideal for a variety of industrial, military, and automotive applications. It also offers ample voltage settings, including 0.6 V, 0.8 V and 0.9 V, without requiring an external resistor.

Due to its wide input voltage range and high conversion efficiency, the LT8630IFE#TRPBF is a perfect choice for portable and embedded systems that require a small footprint and low power consumption or when maximum output current from a single source is critical. It is widely used in power management, medical and robotic applications, instrument control systems, point of sale, and many other commercial, vehicle, and industrial applications.

The LT8630IFE#TRPBF features programmable output current threshold and is integrated with thermal-control circuitry for safe operation. It is housed in the 10-pin MSOP thermal enhanced package, allowing it to operate over a temperature range from –40°C to 125°C.

2. Working Principle

The LT8630IFE#TRPBF is a dedicated switching regulator input/output voltage control circuit that operates with a simplified circuit. It integrates a fixed frequency pulse-width modulation (PWM) voltage regulator and temperature sensing circuit. It regulates and accurately maintains the required output voltages. The device has two inputs to the PWM comparator; the internal reference, and a voltage applied to the feedback pin through a voltage divider. The output voltage of the voltage regulator is measured at the feedback pin and compared against the internal reference. A difference between the two signals is used to calculate a PWM duty cycle, which is generated and applied as a control signal to the power switch.

The LT8630IFE#TRPBF also features a frequency control. When the frequency is set, the device adjusts its switching frequency to maintain constant voltage, thus allowing for optimal operating conditions. Additionally, the device features a soft start circuit for smooth start-up and output voltage ramp-up. Furthermore, programmable output current threshold is available for the device, and it can be programmed to shut off the output if an over-current condition occurs. The device is also fitted with thermal sensing circuitry to protect against thermal overload conditions.

Conclusion

The LT8630IFE#TRPBF is a compact, efficient and reliable voltage regulator developed by Linear Technology. It is a powerful application that offers a wide input and output voltage range, a range of programmable features, high-efficiency, and comprehensive thermal protection. It is a perfect choice for designing a wide array of projects in industrial, automotive, and military applications, such as power management, instrument control systems, point of sale, and many more.