DC/DC converter offers 150°C max junction temp

Linear Technology Corp. has unleashed the H-grade version of the LT3692A, a monolithic, dual output step-down switching regulator that claims to offer up to 3.5A of continuous output current from each channel.

According to the company, it operates from a V_IN range of 3-36V with transient protection to 60V, engineered for load dump and cold-crank conditions in automotive applications that are subject to high ambient temperatures.

The H-grade version delivers independent input, shutdown, feedback, soft-start, current limit and comparator pins for each channel that the company said simplifies complex power supply tracking/sequencing requirements. The device's switching frequency is user-programmable from 250kHz to 2.25MHz, enabling designers to optimize efficiency while avoiding critical noise-sensitive frequency bands.

The H-grade versions operate up to a junction temperature of 150°C, compared to the E- and I-grade versions' 125°C maximum junction temperature. All electrical specifications are identical for the E, I and H.

The LT3692AHUH is packaged in a 32-lead 5 x 5mm QFN, priced starting at $4.95 each for 1,000 piece quantities. The LT3692AHFE is packaged in a thermally enhanced TSSOP-38 and is FMEA compliant, pricing starts at $5.37 each for 1,000 piece quantities. Both versions are available from stock.