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The AP7176BFN-7 is a 3.0A ultra low-dropout linear regulator from Diodes Incorporated, housed in a U-DFN3030-10 package. It features an enable input and power-good output for power management sequencing. The device utilizes two supply inputs: VIN (1.2V to 3.65V) for power conversion and VCNTL (3.0V to 5.5V) for control. It delivers adjustable output voltage with 1.5% accuracy over load, line, and temperature ranges (-40°C to +85°C). Key electrical parameters include a typical dropout voltage of 0.33V at 3A and an internal soft-start time of 0.6ms.
Verify the specific suffix 'FN' confirms the U-DFN3030-10 package type and '-7' indicates tape and reel packaging containing 3000 units per carrier. Confirm RoHS compliance and halogen-free status requirements match project specifications. Ensure ordering documentation references the correct datasheet revision DS35818 Rev. 4 - 2 for accurate pin assignments and electrical characteristics.
Select this component when high continuous current delivery near 3A is required with minimal voltage drop. The dual-supply design is advantageous for applications needing independent control logic voltage. Verify that the application can accommodate the separate VIN and VCNTL pins and associated decoupling capacitors as specified in the typical application circuit.
This part belongs to the AP7176B family of ultra low-dropout linear regulators. The family includes variants in SO-8EP and MSOP-8EP packages. The AP7176BFN-7 specifically denotes the U-DFN3030-10 package variant optimized for thermal performance via its exposed pad.
AP7176BFN-13 is a verified substitute within the same package and packing configuration. Other package variants like AP7176BSP-13 or AP7176BMP-13 require PCB layout changes due to different footprint dimensions.
Separating the power input (VIN) from the control input (VCNTL) allows the regulator to achieve very low dropout voltages and reduces overall power dissipation compared to single-supply designs.
The Power-Good (PG) pin is an open-drain output that indicates the status of VOUT by monitoring the FB pin. It pulls low if the output voltage is outside regulation limits, during thermal shutdown, or if supply voltages drop below thresholds.