LT3506IDHD#TRPBF

The LT3506IDHD#TRPBF is a dual, current-mode PWM step-down DC/DC converter manufactured by Analog Devices. It integrates two 2A power switches and operates with synchronized oscillators in opposite phases to minimize input ripple current. The device supports a wide input voltage range from 3.6V to 25V, making it suitable for various power sources including batteries and wall transformers.

Key electrical specifications include an adjustable output voltage with a minimum of 0.8V and a maximum of 23.25V, and an output current capability of 1.6A per channel. The switching frequency is fixed at 575kHz, allowing for the use of small inductors and ceramic capacitors, which contributes to a compact solution size. The current-mode PWM architecture ensures fast transient response and cycle-by-cycle current limiting for protection.

This regulator is available in a small, 16-lead thermally enhanced 5mm x 4mm DFN surface mount package. It includes independent shutdown and soft-start circuits for each regulator, as well as power-good signals that simplify power supply sequencing and interfacing with microcontrollers. Frequency foldback and thermal shutdown provide additional protection.

Applications for the LT3506IDHD#TRPBF include disk drives, DSP power supplies, wall transformer regulation, distributed power regulation, DSL modems, and cable modems.