From tactile on–off switches to thermal cutoff devices that protect cells, Littelfuse provides solutions for cordless power tool battery packs. A block diagram shows other components we offer to protect and bolster the performance of small rechargeable Li-ion batteries. Available parts include resettable fuses and TVS diode arrays for, respectively, overcurrent and overvoltage protection.

MOSFETs and NTC thermistors from Littelfuse help optimize the performance of brushless dc (BLDC) motors in cordless power tools. A block diagram shows how our solid state switches and temperature sensors fit into BLDC motor circuitry. We also provide high-voltage fuses for overcurrent protection, TVS diode arrays for overvoltage protection, and reed switches to engage and disconnect components.

Cordless power tool battery chargers require efficient rectifiers and reliable overcurrent and overvoltage protection devices. A block diagram shows which MOSFET ac–dc converters, TVS diode arrays, metal oxide varistors, Schottky diodes, and miniature fuses made by Littelfuse that battery charger designers can use.