[ LM26003 ] DC Sleep Mode Threshold Current
Hi,
Can you help me to figure out how LM26003 goes into sleep mode on customer board?
My customer uses LM26003 under following conditions.
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- Vin=24V
- Vout=9.5V
- L=15uH
- fsw=400KHz
---
WIth conditions above, if I calculrate the sleep mode threshold based on equation (6).
Isleep should be around 130mA.
However, my customer has seen that board-to-board variation of this Isleep is larger than they expected.
Some boards go into sleep mode with 90mA current, some others are around 160mA.
I believe that ILIMPK may have some variations. Also their inductor has +/-30% variation.
Other than that, do you have any ideas of contribution which cause Isleep variations?
Also, any ways to know Isleep on every single board with easy ways?
Thank you for your support in advance.
Regards,
Ken
