BQ51020: TI replacement for the LTC4120

JH Shin

Guru 12100 points

Part Number: BQ51020
Other Parts Discussed in Thread: BQ51050B

Tool/software:

Hello,

My customer is looking for a TI replacement for the LTC4120.

Could you please recommend a TI product that supports both a wireless power receiver and a buck battery charger?

Thank you.

7 months ago

0 Garrett Kreger 7 months ago

TI__Mastermind 34260 points

Hi JH,

TI's best solution for wireless receiver and buck battery charger in 1 IC is the BQ51050B. It is available in 2 package options as well. The BQ51050B is designed to charge to 4.2V full charge voltage, but there are 2 other variants of the part shown on the datasheet to support 4.35V or 4.4V full charge voltage as well. I have linked the datasheet below for your reference.

bq5105xB High-Efficiency Qi v1.2-Compliant Wireless Power Receiver and Battery Charger datasheet (Rev. F)

Best Regards,

Garrett

0 JH Shin 7 months ago in reply to Garrett Kreger

Guru 12100 points

Hi Garrett,

Thank you for your reply.

Could you please recommend a Wireless Transmitter product to be used in pair with the BQ51050B you recommended?

Regards,

0 Garrett Kreger 7 months ago in reply to JH Shin

TI__Mastermind 34260 points

Hi JH,

For wireless power transmitters, all devices are NRND (not recommended for new design) and we would not recommend designing them in a new system. TI transmitter products do not meet the latest standards.

Best Regards,

Garrett

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BQ51020: TI replacement for the LTC4120