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[FAQ] LM26480: Is there a reference design of power up sequence implemented by RC delay on EN pin?

Part Number: LM26480

  Yes; a set of RC (Resistor and Capacitor) values were used on TI LM26480 EVM with VCC=3.3V on 3 "EN" pins (ENSW2, ENLDO1, ENLDO2) to control the power up delay for the sequence. ENSW1 connects to VCC  directly without RC delay. 

  The delay time can’t be just calculated by RC value; it’s also related to the “EN” pin threshold for logic “H”. The power up sequence was captured as the second picture showing below.