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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 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)：0.8V
- Voltage - Output (Max)：12V
- Current - Output：4A
- Frequency - Switching：500kHz
- 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 AP65402SP-13 is a synchronous step-down DC/DC buck converter manufactured by Diodes Incorporated. It operates with an input voltage range of 4.75 V to 23 V and delivers up to 4 A of output current. The device features a fixed switching frequency of 500 kHz and supports adjustable output voltages from 0.925 V to 16 V. It utilizes an 8-pin SOIC package with an exposed pad for thermal management. The integrated circuit includes protection features such as overcurrent protection and thermal shutdown, ensuring reliable operation in various power supply applications.
Feature Summary
- Synchronous rectification architecture for enhanced efficiency
- Integrated light load improvement for better low-current performance
- Fixed internal switching frequency simplifies external component selection
- Built-in thermal shutdown and overcurrent protection mechanisms
Applications
- Point-of-load regulation for embedded systems
- Power supplies for industrial control equipment
- Voltage conversion for communication infrastructure
- Battery-powered device power management
Procurement Notes
Verify the specific suffix 'SP-13' against the manufacturer's latest datasheet to confirm packaging type and tape-and-reel specifications. Ensure compatibility with RoHS directives if required for your region. Cross-reference the part number with official Diodes Incorporated distributors to avoid counterfeit components. Confirm that the 8-SOIC package dimensions match your PCB footprint requirements before finalizing procurement orders.
Selection Notes
Select this component when a fixed 500 kHz frequency is preferred to minimize electromagnetic interference filtering requirements. It is suitable for designs requiring up to 4 A continuous output current within a 4.75 V to 23 V input window. Consider the thermal performance of the exposed pad layout for high-load scenarios. Compare against other members of the AP654xx series if different switching frequencies or current ratings are needed for specific application constraints.
Part Context
This part belongs to the AP654xx family of synchronous buck converters from Diodes Incorporated. These devices are designed for general-purpose power management tasks. The AP65402 specifically offers a 500 kHz switching frequency, distinguishing it from variants like the AP65400 (400 kHz) or AP65403 (750 kHz). All members share similar pinouts and protection features but differ in switching speed and associated passive component values.
Replacement Considerations
Direct substitutes include AP65400SP-13 and AP65403SP-13, which share the same package and pinout but operate at different switching frequencies (400 kHz and 750 kHz respectively). Verify that the change in switching frequency does not necessitate modifications to the inductor or output capacitor values in the existing design.
