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Linear regulator type

ahmed ahmed84
Prodigy 30 points
Other Parts Discussed in Thread: UA78

i ask about type for this  UA78M05CKCS  Linear regulator  if is standard drop or low drop (LDO)

UA78M05CKCS

  • 0
    TI__Mastermind 43610 points

    Hi Ahmed,

    We classify this as a standard linear regulator. The reason is that drop-out is relatively fixed. The UA78 series uses a Darlington output stage as shown in the block diagram below:

    This means that there is a fixed 2xVBE drop minimum from VIN to VOUT.

    An LDO uses a single PNP, NMOS, or PMOS transistor as the output stage so can regulate with a VIN-VOUT <1V. 

    I hope this answers your question.

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