LP8758-E3: I want to able and disable the EN1/EN2 with hardware control. May I add the load switch? How to achieve it?

user5707026

Part Number: LP8758-E3

Dears

We need a PMIC to power supply Longson 2k1000.

I found the LP8758-E3 is suitable choose. But I want to able and disable the EN1/EN2 with hardware control. May I add the load switch? How to achieve it? Which load switch I can choose?

For example, the 4 voltages at the output terminal need to have a time sequence. At the beginning, power on at 3.3v, then power on at 1.2v, power on at 1.5v, and power on at 0.9v, each with an interval of 10ms, how to control this at the input.

I don't want to use the software to control.

Thanks

Elsa Duan

over 3 years ago

0 Mahmoud Harmouch over 3 years ago

TI__Mastermind 24740 points

Hello,

I understood you would like to achieve the power sequence by only using EN1/EN2. Are you planning to use the load switch for controlling EN1/EN2?

Regards

0 Phil Yi40 over 3 years ago

TI__Mastermind 33140 points

Hi, Elsa,

The LP8758-E3 has 4 power rails with fixed output voltage, current limit and power up sequence by OTP settings.

Please see the pictures below for more details. EN1 is the only enable control input for the PMIC.

Please let's know if you have more questions.

0 Phil Yi40 over 3 years ago

TI__Mastermind 33140 points

Hi, Elsa,

The LP8758-E3 has 4 power rails with fixed output voltage, current limit and power up sequence by OTP settings.

Please see the pictures below for more details. EN1 is the only enable control input for the PMIC.

Please let's know if you have more questions.

0 Phil Yi40 over 3 years ago in reply to Phil Yi40

TI__Mastermind 33140 points

Just realized pictures were not attached properly. It's attached here now.

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LP8758-E3: I want to able and disable the EN1/EN2 with hardware control. May I add the load switch? How to achieve it?