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LP87702-Q1: spec question

Patrick Chen(TPE System & Application)
Expert 3430 points
Part Number: LP87702-Q1

Hi Sir,

Customer are using two buck function of LP87702-Q1 to output 3.3V and 1.2V.

They would like to know what is the shortest time that the 3.3V and 1.2V will be ready when Vin supplied?

Many thanks,

Patrick 

  • 0
    TI__Intellectual 950 points

    Hi Patrick,

    Which PN you are referring to? Basically LP87702-Q1 is capable 5V VIN, but we don't have any catalog version available for it. Released LP87702DRHBRQ1 is fixed for 3.3V VIN. Which means that Buckx Vout could be at the maximum VIN-0.8V (<2A load) and VIN-1V (>2A load) in range 0.7V-3.36V

    According to datasheet driving NRST input high initiates OTP read and enables the system I/O interface. Minimum delay from NRST reset input rising edge to I2C write or read access is 1.2ms. If Buckx startup delays are 0ms, then slewrate and output capacitor define final time when Buckx outputs are ready.

    Tuomo