LMR36503: LMR36503RFRPER HIGH NO-LOAD CURRENT

Duong Anh

Part Number: LMR36503
Other Parts Discussed in Thread: LMR36506

Hello, I'm using IC LMR36503RFRPER (adjustable version), for a saving energy application. But the no load input current is so high, about 7mA. The input voltage is 15V, and output voltage is 3.3V. My circuit follows guideline below. Please help me. Thank you.

over 4 years ago

+1 Daniel Li14 over 4 years ago

TI__Mastermind 27470 points

cause it is FPWM vesrion, which will consume higher current at no load codition , you can try to use PFM model version. you may need use LMR36506 PFM version.

0 Duong Anh over 4 years ago in reply to Daniel Li14

Prodigy 10 points

Hello, thank you for helping me. For LMR36506, 3.3V output PFM version seems to be no more available, right ?. Maybe, I think t need to look for some different types of IC for my circuit.

0 Daniel Li14 over 4 years ago in reply to Duong Anh

TI__Mastermind 27470 points

Yes, you can choose LMR36506.

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LMR36503: LMR36503RFRPER HIGH NO-LOAD CURRENT