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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)：4.5V
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：0.765V
- Voltage - Output (Max)：6V
- Current - Output：3A
- Frequency - Switching：650kHz
- 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 AP65353SP-13 is a synchronous step-down switching regulator IC manufactured by Diodes Incorporated. It operates with an input voltage range of 4.5V to 18V and provides a single adjustable output from 0.765V to 6V at up to 4A. The device integrates synchronous rectification for high efficiency and utilizes a fixed 650kHz switching frequency. It is housed in an 8-SOIC package with an exposed pad, suitable for surface mount applications across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates synchronous rectification to enhance conversion efficiency and reduce external component count.
- Features constant on-time control architecture capable of handling wide input-to-output voltage differentials.
- Includes comprehensive protection mechanisms such as overcurrent, overtemperature, and short-circuit protection.
Applications
- Point-of-load regulation for embedded systems
- Industrial equipment power distribution
- Telecommunications infrastructure bias supplies
Procurement Notes
Verify the specific suffix SP-13 against the manufacturer datasheet to confirm packaging configuration and tape-and-reel specifications. Ensure the ordering part number matches the required thermal pad exposure and pinout compatibility for the target PCB footprint. Cross-reference the revision level to guarantee consistency with design documentation.
Selection Notes
Select this component when a compact solution is required for converting higher bus voltages down to low-voltage logic rails. The 4A current capability supports moderate load requirements while the SOIC-EP package offers a balance between thermal performance and board space constraints compared to larger packages.
Part Context
This part belongs to the AP65xxx series of DC-DC converters from Diodes Incorporated. The series emphasizes cost-effective power management solutions using proprietary gate drive designs. The AP65353 variant specifically targets applications requiring reliable step-down conversion with integrated protection features in a standard small-outline package.
Replacement Considerations
Consult official substitution guides for compatible alternatives within the same product family or equivalent offerings from other manufacturers. Verify that any substitute maintains identical pinout, thermal characteristics, and electrical parameters to ensure seamless integration without circuit redesign.
