The LT8300 operates in a boundary mode, a current-mode control switching scheme, resulting in better than +/-5% regulation over the full line, load and temperature range. Boundary mode, also known as critical conduction mode (CCM), permits the use of a smaller transformer compared to equivalent continuous conduction mode designs. Low output ripple Burst Mode® operation maintains high efficiency and helps extend battery run times at light load with its low quiescent current. The output voltage is easily set by a single external resistor and the transformer turns ratio. Several transformers identified in the data sheet can be used for numerous applications. Additional features include power, internal soft-start and adjustable undervoltage lockout. The high level of integration results in a simple, low component count, tightly regulated solution ideal for isolated power delivery.
The LT8300 is available in a small 5-lead ThinSOT™ package. Extended and industrial versions operate over a junction temperature range from -40°C to 125°C, and a high temperature automotive grade operates from -40°C to 150°C. Pricing starts at $2.95 each in 1000-piece quantities.