AP7176BSP-13

Overview

The AP7176BSP-13 is a 3.0A ultra low-dropout linear regulator manufactured by Diodes Incorporated, housed in an SO-8EP package. It features dual supply inputs: VIN (1.2V to 3.65V) for power conversion and VCNTL (3.0V to 5.5V) for control biasing. The device provides an adjustable output voltage with 1.5% accuracy over load, line, and temperature ranges. Key electrical parameters include a typical dropout voltage of 0.33V at 3A, internal soft-start time of 0.6ms, and thermal shutdown protection at +170°C.

Feature Summary

• Dual supply architecture separates the power input from the control bias to minimize dropout voltage and reduce overall power dissipation.
• Integrated enable pin and open-drain power-good output facilitate precise power sequencing for complex digital loads.
• Internal soft-start function limits current surge during startup to ensure stable initialization under heavy load conditions.
• Comprehensive protection mechanisms include thermal shutdown, current limiting, and short-circuit protection.

Applications

• FPGA and DSP power management solutions requiring specific startup and power-down sequencing
• Notebooks, PCs, and netbook systems
• Wireless communication equipment and servers
• Motherboards and front side bus VTT generation

Procurement Notes

Verify that the component matches the exact part number AP7176BSP-13, specifically confirming the SP suffix indicates the SO-8EP package variant. Ensure the datasheet revision aligns with your design requirements. Confirm RoHS compliance status directly through manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this regulator when high continuous current delivery near 3A is required alongside minimal voltage drop. The separate VCNTL pin allows independent control logic biasing, which is advantageous for maintaining regulation efficiency. Ensure adequate PCB copper area is allocated for the exposed pad to manage thermal resistance effectively under maximum load conditions.

Part Context

This component belongs to the AP7176B family of ultra low-dropout linear regulators produced by Diodes Incorporated. The family includes variants such as AP7176BMP-13 and AP7176BFN-13, which utilize MSOP-8EP and U-DFN3030-10 packages respectively. All variants share identical electrical characteristics and functional capabilities, differing only in physical footprint and thermal performance metrics.

Replacement Considerations

AP7176BMP-13

FAQ

How does the dual supply input configuration benefit the AP7176B?

Separating the power input (VIN) from the control bias (VCNTL) allows the regulator to achieve very low dropout voltages and reduces power dissipation within the device compared to single-supply architectures.

What is the function of the Power-Good (PG) pin?

The PG pin is an open-drain output that monitors the feedback voltage. It pulls low when the output voltage is outside regulation limits or during thermal shutdown, indicating to the system that the power supply is not yet stable.