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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 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)：4.7V
- Voltage - Input (Max)：23V
- Voltage - Output (Min/Fixed)：0.925V
- Voltage - Output (Max)：20V
- Current - Output：3A
- Frequency - Switching：340kHz
- 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 AP6503SP-13 is a synchronous step-down DC/DC buck 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 is housed in an 8-pin SOIC package with an exposed pad (SO-8EP) for enhanced thermal dissipation and is rated for operation between -40°C and +85°C.
Feature Summary
- Integrates low RDS(ON) high-side and low-side MOSFETs for high efficiency
- Employs current mode control architecture for rapid transient response
- Features external compensation network design for flexible loop stability
Applications
- Point-of-load regulation for embedded systems
- Battery-powered portable electronic devices
- Industrial control system power distribution
Procurement Notes
Verify the specific suffix 'SP-13' against the manufacturer's official datasheet to confirm the tape-and-reel packaging configuration and RoHS compliance status. Ensure the ordering part number matches the exact pinout and thermal pad specifications required for your PCB layout. Cross-reference the revision level to guarantee compatibility with existing design files.
Selection Notes
Select this component when a compact solution is required for 23V input applications needing up to 3A output. The 340kHz frequency allows for smaller passive components compared to lower-frequency alternatives. The exposed pad package is suitable for designs requiring robust thermal management without additional heatsinking in moderate duty cycles.
Part Context
This part belongs to the AP65xx series of synchronous buck converters from Diodes Incorporated. It shares architectural similarities with the AP6501 and AP6502 but offers higher current capability. The series utilizes standard green SO-8EP packages designed to meet environmental standards while maintaining a small footprint for space-constrained electronics.
Replacement Considerations
Direct substitutes include the AP6502SP-13 for lower current requirements or the AP6501SP-13. Third-party equivalents such as the RT8283A or FR9886 offer similar electrical characteristics but require verification of pin compatibility and thermal performance.
