MILPITAS, CA - August 25, 2014 - Linear Technology Corporation introduces the LTC4231, an ultralow quiescent current (IQ) Hot Swap™ controller, enabling safe board or battery insertion and extraction from 2.7V to 36V systems. The LTC4231 controls an external N-channel MOSFET to gently power up board capacitors, avoiding sparks, connector damage and system glitches. Device quiescent current is a mere 4µA during normal operation, dropping to 0.3µA in shutdown mode. To ensure low current operation, the undervoltage and overvoltage resistive dividers are connected to a strobed ground, lowering their average current draw by 50x. The LTC4231 provides a compact and rugged micropower solution for hot plugging and battery protection, especially in energy conscious applications utilizing solar power or energy harvesting.
Linear Technology PR: LTC4231 4µA I<sub>Q</sub> Hot Swap Controller Protects Batteries from Voltage & Current Faults