AP64501SP-13

Overview

The AP64501SP-13 is a synchronous buck converter IC from Diodes Incorporated, housed in an 8-pin SOIC package with an exposed pad. It supports an input voltage range of 3.8V to 40V and delivers up to 5A output current. The adjustable output voltage spans from 0.8V to 40V. Operating at a fixed switching frequency of 570kHz, the device integrates high-side (45mΩ) and low-side (20mΩ) power MOSFETs. Quiescent current is specified at 25µA, and it functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates proprietary gate driver scheme to suppress switching node ringing without compromising MOSFET transition times, thereby reducing high-frequency radiated EMI noise.
• Features frequency spread spectrum (FSS) capability with ±6% jitter to distribute emitted energy across frequencies, further minimizing electromagnetic interference.
• Utilizes peak current mode control architecture to minimize external component count while maintaining efficient step-down DC-DC conversion performance.

Applications

• Distributed power bus supplies for 5V, 12V, and 24V systems
• Point-of-load regulation in consumer electronics and network systems
• Power management for white goods, small home appliances, and general-purpose applications

Procurement Notes

Verify the specific suffix 'SP-13' against official Diodes Incorporated documentation to confirm pinout compatibility and thermal characteristics. Ensure the selected packaging format matches assembly requirements. Cross-reference datasheet revisions to validate electrical parameters before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring a 40V input ceiling and 5A continuous load capacity in a compact SOIC footprint. The integrated MOSFETs and peak current mode control simplify design complexity. Consider the 570kHz fixed frequency for balancing efficiency and passive component size against lower or higher frequency alternatives.

Part Context

This part belongs to the AP645xx series of high-voltage synchronous buck converters manufactured by Diodes Incorporated. It shares architectural similarities with other members like the AP64350 but offers higher current handling capabilities. The series emphasizes EMI reduction through spread spectrum technology and robust protection features suitable for industrial and consumer environments.

Replacement Considerations

The AP64350QSP-13 serves as a related alternative within the same family, though it provides only 3.5A output current. Verify that the reduced current rating meets application demands before substitution. Both devices share similar input ranges and control architectures.