AP7175MP-13

Overview

The AP7175MP-13 is a 3.0A ultra low-dropout linear regulator with an enable input and power-good output, manufactured by Diodes Incorporated. It features two supply inputs: VIN (1.2V to 3.65V) for power conversion and VCNTL (3.0V to 5.5V) for control. The device delivers continuous output current up to 3A with adjustable output voltage ranging from 0.8V to VIN minus dropout voltage. It provides 1.5% accuracy over load, line, and temperature ranges (-40°C to +125°C). The component is housed in an MSOP-8EP package with an exposed pad.

Feature Summary

• Dual supply architecture separates power input from control bias to minimize dropout voltage and reduce power dissipation.
• Integrated power-good monitoring and power-on reset functions facilitate precise power sequencing for complex digital loads.
• Internal soft-start limits current surge during startup, while thermal shutdown protects the device under overload conditions.

Applications

• FPGA and DSP power management solutions requiring specific start-up and power-down sequencing.
• Front Side Bus VTT generation for server and motherboard architectures.
• Portable computing devices including notebooks, PCs, and netbooks.
• Wireless communication equipment and dongles.

Procurement Notes

Verify component authenticity through authorized Diodes Incorporated channels or certified distributors. Confirm the MSOP-8EP package marking matches official datasheet specifications. Ensure compliance with RoHS and Halogen-free requirements as defined by the manufacturer. Check for any specific handling instructions related to moisture sensitivity levels before assembly.

Selection Notes

Select this regulator when high current delivery near the input rail is required with minimal voltage drop. The dual-supply design allows independent optimization of control logic stability versus power efficiency. Ensure the application can accommodate the separate VCNTL bias supply for optimal performance. Verify that the PCB layout supports the exposed pad thermal requirements for the MSOP-8EP package.

Part Context

The AP7175 series is designed for high-current applications where standard LDOs may suffer excessive heat dissipation. The MP suffix denotes the MSOP-8EP package variant, which includes an exposed pad for enhanced thermal conductivity compared to standard SOIC packages. This design targets dense PCB layouts in portable electronics and computing infrastructure.

Replacement Considerations

The datasheet explicitly states 'NOT RECOMMENDED FOR NEW DESIGN - NO ALTERNATE PART'. No direct substitute part numbers are provided by the manufacturer. Designers must evaluate alternative high-current LDOs with similar dual-supply capabilities if redesigning.

FAQ

How does the dual-supply architecture benefit the AP7175?

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

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

The 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 thresholds are not met.