LT3506EDHD#TRPBF

The LT3506EDHD#TRPBF is part of the Linear Technology family of DC-DC switching voltage regulators. It is designed to provide high current, low-noise conversion of a wide (4.5V to 26V) input voltage range down to a regulated 3.3V output. This IC also features auto-compensation of the internal loop, making it easy to use with a variety of loads and line conditions.

Application Field: The LT3506EDHD#TRPBF voltage regulator is ideally suited for use in Li-ion battery powered, point-of-load (POL) applications such as FPGAs, DSPs, microprocessors, ASICs, RF components and other portable or wall power systems. It can also be used in high-efficiency, low-cost embedded and system power supplies as well as in active-clamp/reset flyback converter applications where its 2.5A output current, fast transient response and excellent loop stability provide a very reliable and low noise power device.

Working Principle: The LT3506EDHD#TRPBF voltage regulator is a synchronous, step-down voltage regulator that contains an internal internal N-channel MOSFET synchronous rectifier, allowing the device to reach efficiencies in excess of 90%. The voltage regulator operates in pulse width modulation (PWM) mode, which pulses the internal MOSFET on and off at a fixed frequency of 200KHz, thereby regulating the output voltage. The regulator utilizes current mode control, providing excellent load and line regulation, as well as fast transient response and quick loop compensation. The output voltage is adjustable via the Feedback pin, and the high switching frequency allows for low inductor size in most applications. Additionally, the LT3506EDHD#TRPBF incorporates a Line Voltage feed-forward feature, which improves load regulation during input voltage transients.

Conclusion: The LT3506EDHD#TRPBF voltage regulator is well suited for use in a number of applications, providing a high output current with excellent line and load regulation, as well as quick transient response. Its high switching frequency and low loop compensation make it easy to design into a wide variety of different applications.