VIN 6.5-8.9V
out put:
3.3V 2.5A
1.8V 10.2mA
1.2V 200mA
2.8V 200mA
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Hi Weijin,
TPS650861 is the only PMIC I can think of that is capable of supplying those outputs but would be extreme over kill for this use case. Is the customer able to use a pre-regulator? If they are able to use a pre-regulator I could recommend a more suitable PMIC for this use case.
Best regards,
Layne J
Hi Weijin,
My best recommendation would be to use LP8732 or LP8733. Both of these devices are 2 Buck, 2 LDO PMICs with the only difference being the current limit on the Bucks. These devices are user configurable (see this guide for how the configuration is done) and would be able to fulfil 4 of those rails. Unfortunately I am not very familiar with the different LDOs offered by TI, I would recommend using the following link to find suitable LDOs or post a different E2E question targeted directly at the LDO team.
Best regards,
Layne J
thanks Layne,
do we have one DCDC and many LDO PMIC device here? two DCDC is over spec
Hi Weijin,
If the customer chooses to go with one of the LP8732/33 devices it would be one PMIC and the rest of the rails could be handled external LDOs.
Best regards,
Layne J