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Product Detailed Parameters
- Description：IC REG BUCK ADJ 5A 8SO
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3.8V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：40V
- Current - Output：5A
- Frequency - Switching：570kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SO-EP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The AP64501QSP-13 is a synchronous step-down DC-DC converter manufactured by Diodes Incorporated. It operates with an input voltage range of 3.8V to 40V and delivers up to 5A of output current. The device features adjustable output voltage starting from 0.8V, integrated into an 8-SOIC package with exposed pad (SO-EP). Key electrical specifications include a switching frequency of 570kHz and a quiescent current of 25µA. It supports negative temperature coefficient operation for parallel applications and includes comprehensive protection mechanisms such as over-current, over-temperature, and short-circuit protection.
Feature Summary
- Integrated synchronous rectification for high efficiency across load ranges
- Constant on-time control architecture enabling stable operation with low ESR ceramic capacitors
- Negative temperature coefficient design facilitating safe parallel operation for increased current capability
- Built-in protection against over-current, over-temperature, and short-circuit conditions
Applications
- Point-of-load regulation in industrial equipment
- Power supply stages for automotive infotainment systems
- Voltage conversion for embedded computing modules
- General-purpose high-current buck conversion in consumer electronics
Procurement Notes
Verify the specific suffix 'QSP' indicates automotive-grade qualification and AEC-Q100 compliance when sourcing. Confirm package availability matches the SO-EP-8 variant. Check manufacturer documentation for any recent Product Change Notifications regarding passivation materials or assembly sites that may affect long-term procurement stability.
Selection Notes
Select this component when a 5A output current is required within a compact SO-8 footprint. Ensure the application demands an input voltage up to 40V. Consider the 570kHz fixed frequency for balancing component size and efficiency. Verify thermal management requirements given the exposed pad package design for heat dissipation.
Part Context
This part belongs to the AP645xx series of high-voltage synchronous buck converters from Diodes Incorporated. It shares architectural similarities with the AP6435x and AP6450x families but is distinguished by its 5A current rating and specific automotive-grade packaging options. The QSP designation typically aligns with enhanced reliability standards for automotive environments.
Replacement Considerations
Direct substitutes include the AP64501SP-13 for non-automotive grades or the AP64352QSP-13 if lower current (3.5A) suffices. Cross-reference pinouts and thermal characteristics carefully when replacing with other 8-SOIC buck regulators.
