Exar Corp. recently announced additions to its family of synchronous step-down power modules with input voltage up to 40 V: XR79103, XR79106, XR79203, and XR79206. The XR79103 and XR79106 operate from a 4.5-to-22-V input supply, delivering a regulated output adjustable between 0.6 and 5.5 V. With a 40-V maximum input voltage, the XR79203 and XR79206 add the ability to convert from loosely regulated 24 VDC, rectified 18 VAC and 24 VAC sources. The output voltage can be set from 0.6 to 13.2 V.
With Exar’s emulated current mode constant on-time (COT) control, the power modules have fast transient response of conventional COT control loops and provide excellent line and load regulation performance. The modules offer a host of supervisory and protection features for proper sequencing, safe operation under abnormal operating conditions, and light load operation. The combination of wide input voltage range, a thermally efficient package, tight regulation accuracy, and small size makes the power modules well suited for communications, drones, remote vehicles, and a variety of other applications.
The XR79103 (6 mm × 6 mm × 4 mm), XR79106 (8 mm × 8 mm × 4 mm), XR79203 (8 mm × 8 mm × 4 mm) and XR79206 (10 mm × 10 mm × 4 mm) are available in RoHS-compliant, green/halogen free, space-saving QFN packages. Prices start at $4.25, $5.40, $8.50n and $9.95, respectively, in quantities of 1,000.
Source: Exar Corp.