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AXP209 shutting down

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abhi k

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Dear Support Engineer,

We designed based on Allwinner A20 processor with AXP209. Now we are facing a problem related to power. We are using only ACin for powering.

When we power on with 5V to ACIN, we are getting 3V,1.3V, 2.8V, 1.2V & other voltages only for 100ms. After that all the voltages goes down to 0V except 1.3V LDO and we are getting VINT as 2.5 V and 1.2V on Bias pin.

Pressing the N_OE switch shows a small blip for same 100ms. We have done prototype for 5 boards, all the boards are behaving same.

Please let me know what causing the same.

Regards,
Abhi
 

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