The MSK5101 is a high current, low dropout voltage regulator available in the adjustable output configuration only. The device is used in typical applications such as switching power supply post regulators, system power supplies, and etc. The ultra low dropout specification is due to the utilization of a super PNP output pass transistor with monolithic technology. Dropout voltages of 350mV at 1.5 amps are typical in this configuration, which drives efficiency up and power dissipation down. The device also offers a TTL/CMOS compatible on/off enable function. The MSK5101 is packaged in a space efficient 10 pin ceramic flatpack with a built in metal base.
Source: M.S. Kennedy
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