The LTC1473L provides reliable and efficient switching between two DC power sources. This device drives two external sets of back-to-back N-channel MOSFET switches to route power to the input of a low voltage system. An internal boost regulator provides the voltage to fully enhance the logic-level N-channel MOSFET switches while an internal undervoltage lock-out circuit keeps the system alive down to 2.8V. The LTC1473L senses current to limit inrush between the batteries and the system supply capacitor during switch-over transitions or during fault conditions. A user-programmable timer monitors the time the MOSFET switches are in current limit and latches them off when the programmed time is exceeded. A unique “2-diode” logic mode ensures system start-up regardless of which input receives power first. Applications * Portable Computers * Portable Instruments * Fault Tolerant Computers * Battery-Backup Systems * 3.3V/5V Power Management * Power Path Management for Systems with Multiple DC Sources * Switches and Isolates Sources from 3.3V to 10V * All N-Channel Switching to Reduce Power Losses and System Cost * Built-In Step-Up Regulator for N-Channel Gate Drive * Capacitor Inrush and Short-Circuit Current Limited * User-Programmable Timer Prevents Overdissipation During Current Limiting * Undervoltage Lockout Prevents Operation with Low Inputs * Small Footprint: 16-Pin Narrow SSOP https://elecena.pl/product/281029/dual-low-voltage-powerpath-switch-driver 2007-03-09 https://elecena.pl/product/281029/dual-low-voltage-powerpath-switch-driver 2014-04-17 https://elecena.pl/product/281029/dual-low-voltage-powerpath-switch-driver 2025-01-22