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Product Detailed Parameters
- Description：IC REG BUCK ADJ 5A 8SO
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.75V
- Voltage - Input (Max)：17V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：12V
- Current - Output：5A
- Frequency - Switching：750kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SO-EP
- Grade：-
- Qualification：-
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Overview
The AP65503SP-13 is a synchronous step-down DC/DC buck converter manufactured by Diodes Incorporated. It delivers an adjustable output voltage ranging from 2.5 V to 12 V with a maximum continuous output current of 5 A. The device operates at a fixed switching frequency of 750 kHz and accepts input voltages typically up to 18 V. Packaged in an 8-SOIC (0.154", 3.90mm wide) exposed pad, it integrates internal compensation for simplified design.
Feature Summary
- Light load efficiency improvement through optimized control architecture
- Integrated synchronous rectification for high conversion efficiency
- Internal loop compensation reduces external component count
- Fixed 750 kHz switching frequency enables compact passive selection
Applications
- Point-of-load regulation for embedded systems
- Industrial equipment power distribution
- Consumer electronics main power stages
- Communication infrastructure bias supplies
Procurement Notes
Verify the complete part number including the -13 suffix against official Diodes Incorporated documentation to ensure correct tape-and-reel packaging configuration. Confirm that the 8-SOIC exposed pad thermal requirements are addressed in the PCB layout design prior to procurement.
Selection Notes
Select this component when a 5 A output capability is required within a standard SOIC footprint. The 750 kHz frequency balances size and efficiency. Ensure the application input voltage remains within the specified absolute maximum ratings and that the desired output voltage falls within the 2.5 V to 12 V adjustable range.
Part Context
This part belongs to the AP65xxx series of synchronous buck converters from Diodes Incorporated. These devices are designed for applications requiring high efficiency and minimal external components. The SP variant indicates the specific package and thermal pad configuration suitable for surface-mount assembly.
Replacement Considerations
Cross-reference with AP65502SP-13 for lower current variants or AP65453SP-13 for different electrical specifications. Verify pinout compatibility and thermal performance before substituting.
