The LTM4641 is a 4.5V to 38V input, 0.6V to 6V output, 10A step-down µModule regulator with comprehensive electrical and thermal protection for loads such as processors, ASICs and high-end FPGAs. This regulator monitors input voltage, output voltage and temperature conditions. If any user-adjustable trip thresholds are exceeded it responds quickly within 500ns in the case of an output overvoltage fault, ceasing operation, and if necessary, activating external switches. One switch disconnects the input supply rail while the other discharges the output capacitors to protect the load. Additionally, when any trip threshold is exceeded, the LTM4641 will issue a logic level fault signal which may be used to initiate an orderly emergency shutdown sequence in the system. The adjustable trip thresholds are accurate to within ±2.7% over the full operating temperature range. The LTM4641 includes power MOSFETs, DC/DC controller, inductor, compensation and the protection logic circuits in a compact surface mount BGA package. It is designed for point-of-load regulation in robotics and industrial instrumentation, as well as rugged environments such as defense and avionics systems.When any trip threshold is exceeded, the LTM4641's protection circuitry classifies the fault as latching or non-latching. Normal voltage regulation will automatically resume once a non-latching fault has cleared. For latching faults the system must cycle the input power or supply a logic level signal to the LTM4641 in order to resume normal operation. The LTM4641 is packaged in a thermally efficient RoHS compliant 15mm x 15mm x 5.01mm BGA with guaranteed operation over -40°C to +125°C (E-grade and I-grade) or -55°C to +125°C (MP-grade). Pricing starts at $25.95 each for 1,000-piece quantities.
