LP8863-Q1: Accuracy for PWM_FSET resistor

Hi Chen

Thank you for fast reply.

My question was cleared. 

Best regards,

Satoshi

Hi chen

Sorry for additional question,

R_BST_FSET and R_PWM_FSET recommend value is E96 series by datasheet. 

When should to use E24 series only, it is difficult to match 1% accuracy range.

Can E24 use R_BST_FSET and R_PWM_FSET resister?

If can, please let me know recommend value and range.

Best regards,

Satoshi

Hi Chen

Thank you for reply,

When in the case of 4.75kΩ: 305Hz, please let me confirm about 4.7kΩ ±0.5% resistor can use or not.

(4.7kΩ ±0.5%: 4.6765kΩ～4.7235kΩ, 4.75kΩ ±1%: 4.7025kΩ～4.7975kΩ)

By the way, one of LP8863 changed 305Hz to 152Hz(3.92kΩ_typ) value is 4.21kΩ.

I think that resistor value mean below range, correct?

305Hz: 4.75kΩ ±1% = 4.7025kΩ～4.7975kΩ

152Hz: 3.92kΩ ±1% = 3.8808kΩ～3.9592kΩ

⇒3.9593kΩ ~ 4.7024kΩ: unknown range for 305Hz or 152Hz

If correct and if there any histogram for unknown range per parts, please let me know.

Best regards,

Satoshi

Hi Satoshi,

⇒3.9593kΩ ~ 4.7024kΩ: unknown range for 305Hz or 152Hz

For this range, I would say the majority of device will select the correct frequency and the very small part of device may have a risk to select the wrong frequency.

Hi chen 

Thank you for answer,

One customer was approval above recommend value.

And one additional request that hope to describe recommend BST_FSET and PWM_FSET resistor's accuracy (±1%, use to E96, etc) on the datasheet.

Is there schedule to update above notice on datasheet for next revision? 

Best regards,

Satoshi