Multiplexed output PMU

Mike Peng

Other Parts Discussed in Thread: TPS65510, BQ25150, BQ25120, TPS62770, TPS62743, TPS62800, TPS61240, TPS61099, TPS7A05, TLV741P, LP5907, TPS7A10

Does TI have PMU like TPS65510? But TPS65510 has limited load current ability.

We need multiplexed output PMU to replace DC/DCs, LDOs in wearable products

to save space and cost on PCB.

Input:3.6Vdc-4.5Vdc

Output: 5.0Vdc/100mA step-up DC/DC

3.3Vdc/100mA LDO

1.8Vdc/100mA LDO

1.2Vdc/100mA LDO

over 5 years ago

0 Jason Wang (BSR-MV) over 5 years ago

TI__Genius 9550 points

Hi,
There are no suitable devices from my product line, but, you can wait for other PL's feedback.

0 Chris Glaser over 5 years ago

TI__Guru*** 147020 points

Hi Mike,

For a wearable, there are PMICs with the charger like bq25120 and bq25150.

We also have a boost + buck + load switch in TPS62770.

If you need discrete DC/DCs for higher efficiency, the TPS62743/6/8 and TPS62800 families are very small, popular solutions.

0 Jasper Li over 5 years ago

TI__Mastermind 46905 points

Hi Mike,
if you need boost converter device, please have a look at TPS61240 (smallest solution size) and TPS61099 (small solution size and ultra low IQ).

0 Mike Peng over 5 years ago in reply to Chris Glaser

Expert 1060 points

Chris,

bq25120 is now an NRND PN while bq25150 only an LDO is available, both can not meet customer's requirement, but thank you all the same!

0 Mike Peng over 5 years ago in reply to Jasper Li

Expert 1060 points

Jasper,
What my customer need is a multiplexed output PMU to replace discrete DC-DCs/LDOs to save PCBA sapce and costdown, so an only boost converter device can meet their requirement. But thanks for you answer anyway.

0 Wilson Fwu over 5 years ago

TI__Expert 4320 points

Hi Mike,

For LDOs please look at the following devices for wearable applications:

TLV741P, TPS7A05, LP5907, or TPS7A10 (needs bias rail)

TLV741P, TPS7A05 and LP5907 are in 1x1 packages

TPS7A05, LP5907 and TPS7A10 are in WCSP packages

Best Regards,

Wilson

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Multiplexed output PMU