TIDA-00270 Reference Design

Texas Instruments

Current-Sharing Dual LDOs


This power supply topology is capable of sourcing 6A via two LDOs operating in parallel. The solution sources current evenly between the two TPS74401’s: each capable of supplying 3A. This design allows for higher currents to be supplied than is typically possible with a single LDO. It also allows for additional heat syncing not available with an individual LDO.

  • Sources up to 6AHigh PSRR to filter rippleLow Noise output to provide a clean railLow dropout regulationHigh Accuracy (1% over temperature)Soft-start allows for monotonic startup
Product Categories
  • Power management


Part Number Name Companion Part
OPA333 OPA333 Buy Datasheet
TPS74401 TPS74401 Buy Datasheet

Bill Of Materials

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Design File

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-00270 Altium 27 Aug 2014 ZIP 2109
TIDA-00270 BOM 27 Aug 2014 PDF 196
TIDA-00270 Schematic 27 Aug 2014 PDF 113