4A to 14A POLs share footprint for simplified layout

The IR38xx family of step-down POL regulators, available from 4A to 14A, share a common package outline that allows designers to save cost and time-to-market by using a common board layout for multiple designs

International Rectifier’s IR38xx series of SupIRBuck™ regulators combines IR’s trench MOSFET technology with synchronous-buck control circuitry in a compact 5mm by 6mm Power QFN package. This footprint is 70% smaller than discrete solutions, while full-load efficiency is up to 10% higher than competing monolithic ICs. The package is thermally enhanced and has a profile of 0.9mm, enabling backside mounting in space-constrained applications.

The output voltage is from 0.6V to 12V, operating over a wide input-voltage range from 2.5V to 21V. Common features include pre-bias start-up, fixed 600kHz switching frequency, hiccup-mode short-circuit protection, thermal shutdown, and precise output-voltage regulation. Optional features include tracking capability for generation of memory termination voltage, a programmable power-good indicator, and 300kHz switching frequency for higher output current.

 

FEATURES Programmable soft-start with enable Programmable over-current protection 0.6V, 1.5% accurate reference voltage Pre-Bias protection

APPLICATIONS High-density servers Machine-control units Industrial controllers Medical imaging systems

 

 

 

 

• Fairchild’s FDMC2610, page 080207

 

International Rectifier/IR38xx