SC4210A

8-Pin N-FET Linear Regulator Controller POWER MANAGEMENT Description The SC4210A linear regulator controller includes all the features required for an extremely low dropout linear regulator that uses an external N-channel MOSFET as the pass transistor. The device can operate from input voltages as low as 1.75V and can provide high current levels, thus providing an efficient linear solution for custom processor voltages, bus termination voltages, and other logic level voltages down to 0.5V. The onboard charge pump creates a gate drive voltage capable of driving an external N-MOSFET which is optimal for low dropout voltage and high efficiency. The wide versatility of this IC allows the user to optimize the setting of both current limit and output voltage for applications beyond or between standard 3-terminal linear regulator ranges. ing technique that provides peak transient loading capability while limiting the average power dissipation of the pass transistor during fault conditions. The SC4210A is available in an MSOP-8 surface mount package. SC4210A Features ‹ ‹ ‹ ‹ ‹ ‹ ‹ On-board charge pump to drive external N-MOSFET Input voltage as low as 1.75V to 5.5V Duty ratio mode over-current protection Extremely low dropout voltage Low external parts count Output voltages as low as 0.5V MSOP-8 package Applications Telecom and networking cards Industrial applications Wireless infrastructure Set-top boxes Post regulated power supplies ‹ ‹ ‹ ‹ The 8-pin controller IC features a du...