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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)：4.5V
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：0.765V
- Voltage - Output (Max)：6V
- Current - Output：4A
- 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 AP65453SP-13 is a synchronous buck switching regulator IC manufactured by Diodes Incorporated. It operates with an input voltage range of 4.5V to 18V and provides a single adjustable positive output from 0.765V to 6V. The device supports up to 4A output current at a fixed switching frequency of 650kHz. It features a compact 8-SOIC package with an exposed pad for thermal management. The component functions within a junction temperature range of -40°C to 85°C.
Feature Summary
- Integrated synchronous rectification for improved efficiency
- Adjustable output voltage via external resistor network
- Fixed high-frequency operation to minimize passive component size
Applications
- Point-of-load regulation in industrial equipment
- Power supply stages for embedded computing systems
- Voltage conversion for communication infrastructure modules
Procurement Notes
Verify the specific suffix '13' corresponds to the required tape and reel quantity as defined in the official Diodes Incorporated datasheet. Confirm that the 8-SOIC-EP package footprint matches the target PCB layout, particularly regarding the exposed pad thermal connection requirements. Ensure compliance with RoHS directives if applicable to the end product specifications.
Selection Notes
Select this component when a fixed 650kHz switching frequency is required to optimize inductor size without variable frequency control. The 4A current capability suits moderate power applications where thermal dissipation through the exposed pad is feasible. Consider the 4.5V minimum input voltage constraint against the system's lowest operating rail to ensure stable regulation under all conditions.
Part Context
This part belongs to the AP654xx series of synchronous buck converters from Diodes Incorporated. It shares architectural similarities with other members like the AP65403 but differs in specific electrical ratings such as output current and switching frequency. The series targets cost-sensitive, space-constrained designs requiring reliable DC-DC conversion in standard industrial temperature ranges.
Replacement Considerations
Direct pin-compatible substitutes within the same family include the AP65403SP-13, though it offers different current and frequency characteristics. Cross-vendor replacements require careful verification of pinout compatibility, thermal resistance values, and control loop stability to ensure functional equivalence.
