LT1506IR#TRPBF

LT1506IR#TRPBF – The High-Performance Switching Regulator Controller

The LT1506IR#TRPBF is an integrated switching regulator controller featuring a wide input voltage range (3 V to 20 V) and high-speed power output of up to 300 mA. It is employed by designers creating high-performance DC-DC converters and/or regulators. The switching regulator includes a control circuit and a powerstage consisting of a power switch, an integrated control IC, a sense resistor, and a fast recovery Schottky diode. All of which are housed in the same package.

Application Field and Working Principle of LT1506IR#TRPBF

As previously stated, the LT1506IR#TRPBF can be used to develop high-performance DC-DC converters and/or regulators. It is highly efficient, easy to integrate and extend, easy to adjust, and is cost effective. It is also characterized by a wide range of its application field: it can be used in industrial, telecommunications, automotive, etc.

The LT1506IR#TRPBF operates via a pulse-width modulation technique. It outputs a pulse-width modulated signal which times the driving of the power switch to regulate the output voltage. The correct operation of the device is based on a feedback control system where the output voltage is sensed by the integrated sense pin. Once the sensed output voltage goes above the desired regulated voltage, the controller reduces the pulse-width modulation duty cycle, preventing the output voltage from going too high. On the other hand, if the output voltage is lower than the desired output, the controller increases the duty cycle, thus increasing the power switch on time.

Controlling the pulse-width modulation also affects the output current. If a higher output current is required, the current limit feature of the LT1506IR#TRPBF can be used to safely limit the output current. When the output current reaches the maximum current limit, the device limits the duty cycle to prevent the output current from exceeding the programmed maximum.

The LT1506IR#TRPBF also provides several protections features to ensure reliable operation. It features a low-side output disconnect to enable current limiting, thermal overload protection to prevent over-temperature shutdowns, and frequency foldback and cycle-by-cycle current limiting to prevent the switch from overloading.

Conclusion

The LT1506IR#TRPBF is a high-performance switching regulator controller designed for DC-DC converters and regulators. Its wide input voltage range of 3V to 20V, high power output of up to 300mA, and various protection features make it ideal for industrial, automotive, and telecommunications applications.