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LMR23630: Power consumption and efficiency optimization at light load

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Part Number:LMR23630

Dear E2E Community,

My customer is testing our DC/DC through the LMR23630EVM.

The design constaints are low cost, small size, high efficiency for few mA output, 8V to 36Vmax --> 3.7V@2Apic (GPS/GPRS supply).

He measured 1.06mA on the input current consumption (Iin), for a 12Vin, 3.7Vout@2.7mA, at 400Khz.

We are in PFM mode as expected (double checked through the SW pin signal).

Question:

What are your comments/recommendations to help on the overall power consumption of out LMR on that PFM mode? the goal is to reach ~0.65mA for the input current consumption (Iin).

Regards,


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