LP5562: EN/VCC control or not

user6063109

Part Number: LP5562

Would you advise about LP5562 question?

We would like to use following conditions:

-CLK_32K : Internal

-VDD is always ON (supplied by System)

I would like to know the difference <EN/VCC pin control by MCU> and <connect to VDD>.

How different each power consumption in LED OFF status?

connect to VDD: 0.25mA ( described in ”Powersave mode supply current” Internal oscillator running )

EN/VCC pin control by MCU : typ. 0.2uA (Standby mode)

Is it correct?

Thanks and Best regards,

R.Sato

0 Kenneth Du over 6 years ago

Let us check this and reply you before next Monday.

0 user6063109 over 6 years ago in reply to Kenneth Du

Dear Kenneth

How about this issue?

I'm waiting for your reply.

If my understanding is correct, I will design my circuit EN/VCC pin -> connect to VDD.

Best Regards,

R.Sato

0 Kenneth Du over 6 years ago in reply to user6063109

You're correct.

If EN/Vcc is connected to MCU, you can set it low. If EN is low, and CHIP_EN = 0 it enters standby mode with 0.2uA.

If EN is connected to Vdd, and Vdd is always there so EN=1, if you use internal clock, it's 0.25mA in power save mode.

0 user6063109 over 6 years ago in reply to Kenneth Du

Dear Kenneth

Thanks for your answer. I understood.

Best Regards,

R.Sato

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