AP3585CMPTR-G1

Overview

The AP3585CMPTR-G1 is a synchronous buck DC-DC switching controller manufactured by Diodes Incorporated. It operates within an input voltage range of 4.5V to 13.2V and features a fixed switching frequency of 200kHz with a maximum duty cycle of 82%. The device integrates synchronous rectification and supports clock synchronization for noise reduction. It includes enable and phase control features, functioning as a single-output positive regulator. The component is rated for an operating temperature range of -40°C to 85°C and is housed in an 8-SO-EP package.

Feature Summary

• Integrates synchronous rectification to improve conversion efficiency compared to traditional diode-based solutions.
• Supports external clock synchronization to allow precise timing alignment and reduce system-wide electromagnetic interference.
• Provides flexible control capabilities through integrated enable logic and phase control functions.

Applications

• Point-of-load regulation in industrial equipment
• Power distribution stages in embedded computing systems
• Voltage step-down conversion for peripheral subsystems

Procurement Notes

Verify the specific suffix CMPTR-G1 against official Diodes Incorporated documentation to confirm the tape-and-reel packaging configuration and lead-free status. Ensure compatibility with the target PCB footprint for the 8-SO-EP exposed pad package. Cross-reference the latest datasheet revision to confirm pinout consistency and thermal pad requirements before finalizing procurement orders.

Selection Notes

Select this controller when a synchronous buck topology is required for higher efficiency at moderate current levels. The 200kHz switching frequency offers a balance between component size and switching losses. Verify that the application requires clock synchronization and phase control features, as these are key differentiators from standard PWM controllers. Ensure the input voltage stays within the 4.5V to 13.2V operational window.

Part Context

This component belongs to the AP3585 series of power management ICs from Diodes Incorporated. It is designed as a dedicated switching controller rather than an integrated regulator, requiring external power MOSFETs. The series targets applications needing robust performance in noisy environments due to its synchronization capability.

Replacement Considerations

Consult official substitution guides for direct equivalents. Generic replacements may lack the specific clock synchronization or phase control features. Verify that any substitute maintains the 8-SO-EP package dimensions and thermal characteristics to ensure board compatibility.

FAQ

Does the AP3585CMPTR-G1 include internal power switches?

No, it is a switching controller that requires external synchronous MOSFETs to be connected to the driver outputs.

What is the purpose of the clock synchronization feature?

It allows the internal oscillator to be locked to an external clock signal, enabling multiple converters to operate in sync to minimize total output ripple and EMI.