Over-voltage protection regulator and inrush current limiter

8 August 2007 Circuit & System Protection

Linear Technology's LT4356 is an over-voltage protection regulator, with over-current protection and inrush current limiting for high availability systems. In applications where electronic systems must cope with high voltage surges of short duration, such as load dump in automobiles, the LT4356 provides solid front-end protection for valuable, safety-critical downstream components. The wide input operating range of 4 to 80 V enables continuous operation during cold crank conditions where the battery voltage can be as low as 4 V. With its high input voltage rating, the LT4356 can handle transient voltages of 100 V and higher, and provides reverse input protection to -30 V without damage to itself or the load. The LT4356 lends itself well to automotive, industrial and avionics applications, as well as positive high voltage distributed power Hot Swap systems. An auxiliary amplifier is provided for additional design flexibility. It may be used as a voltage detection comparator or a low drop out (LDO) linear regulator controller.

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