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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 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)：23V
- Voltage - Output (Min/Fixed)：0.925V
- Voltage - Output (Max)：20V
- Current - Output：3A
- Frequency - Switching：240kHz
- 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 AP6503ASP-13 is a synchronous step-down DC/DC converter manufactured by Diodes Incorporated. It operates with a fixed switching frequency of 340kHz and supports an input voltage range from 4.7V to 23V. The device provides a single adjustable output voltage ranging from 0.925V to 20V, capable of delivering up to 3A of continuous load current. Integrated high-side and low-side MOSFETs ensure efficient power conversion. The component functions within an ambient temperature range of -40°C to +85°C and is housed in an 8-pin SOIC package with an exposed pad for thermal management.
Feature Summary
- Integrates low RDS(on) high-side and low-side MOSFETs for high efficiency
- Utilizes current mode control architecture for fast transient response
- Features external compensation for flexible loop stability design
Applications
- Point-of-load regulation for embedded systems
- Power supply stages in industrial equipment
- Battery-powered portable devices requiring efficient step-down conversion
Procurement Notes
Verify the specific suffix ASP-13 against the manufacturer's latest datasheet to confirm pinout compatibility and internal component variations. Ensure the ordering documentation explicitly references Diodes Incorporated as the source. Cross-reference the 8-SOEP package dimensions with your PCB footprint library to prevent assembly errors during surface mount placement.
Selection Notes
Select this component when a 3A synchronous buck solution is required with an input voltage up to 23V. The 340kHz frequency offers a balance between component size and efficiency. Consider the exposed pad requirement for adequate thermal dissipation under full load conditions. Verify that the external compensation network aligns with the system's stability requirements before finalizing the design.
Part Context
This part belongs to the AP6503 family of synchronous buck converters from Diodes Incorporated. The series includes variants such as the AP6503SP-13 and AP6503A, which share similar electrical characteristics but may differ in packaging or specific operational parameters. The family is designed for applications requiring reliable, high-efficiency power conversion in compact form factors.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided reference data. Engineers should consult the manufacturer's official replacement guide or contact technical support directly for validated cross-references.
