LP87561-Q1: LP875610RNFTQ1 vs LP87561IRNFTQ1

Brian Zoro

Intellectual 2900 points

Part Number: LP87561-Q1

hi team,

could you kindly help understanding the differences between these two part#?

LP875610RNFTQ1 vs LP87561IRNFTQ1

Could you please help pointing out where to find in the datasheet?

Thanks!
Best Regards,
Brian

over 2 years ago

0 Tomi Koskela over 2 years ago

TI__Genius 11020 points

Hello Brian,

The register setup/OTP defaults are in the Technical Reference Manuals for the particular orderable part number.

https://www.ti.com/lit/ug/snvu513a/snvu513a.pdf

https://www.ti.com/lit/ug/snvu643/snvu643.pdf

Thanks.

Regards,

Tomi Koskela

0 Brian Zoro over 2 years ago in reply to Tomi Koskela

TI__Intellectual 2900 points

Hi Tomi,

thanks for quick reply!
Just to be sure, if customer is not using any of the default setting, they are fine to go with LP87561IRNFTQ1 instead of LP875610RNFTQ1.

Or anything else I should mention to customer?

Thanks!
Best Regards,
Brian

0 Tomi Koskela over 2 years ago in reply to Brian Zoro

TI__Genius 11020 points

Hi Brian,

Yes they are free to use either one if they use I2C to configure the registers before turning on the bucks. However the LP875610RNFTQ1 has the reset register interrupt enabled which can be handy to inform the host that something has reset the registers (momentary power glitch for example) and they are back to default. Host can then reconfigure the registers through I2C and clear registers.

You can check the configuration guide for more details: https://www.ti.com/lit/ug/snvu590/snvu590.pdf

Thanks.

Regards,

Tomi Koskela

Power management

Power management forum

LP87561-Q1: LP875610RNFTQ1 vs LP87561IRNFTQ1