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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)：0.76V
- 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 AP65452SP-13 is a synchronous step-down DC/DC converter from Diodes Incorporated. It operates with an input voltage range of 4.5V to 18V and delivers up to 4A output current. The device utilizes adaptive constant on-time (COT) control for fast transient response. Output voltage is adjustable from 0.765V to 6V. It features a fixed switching frequency of 650kHz and includes integrated high-side and low-side MOSFETs with a total RDS(on) of 650mΩ. The IC is housed in an 8-SOIC package with an exposed pad, rated for operation between -40°C and +85°C.
Feature Summary
- Adaptive constant on-time control architecture for rapid load transient response
- Integrated synchronous rectification with low on-resistance power switches
- Programmable soft-start and switching frequency synchronization capability
- Comprehensive protection including over-current, thermal shutdown, and undervoltage lockout
Applications
- Point-of-load regulation for industrial equipment
- Power supply stages for embedded computing systems
- Battery-powered portable devices requiring efficient voltage conversion
- Telecommunications infrastructure power distribution
Procurement Notes
Verify the specific suffix 'SP-13' against the manufacturer's latest datasheet to confirm packaging type and tape/reel specifications. Ensure compatibility with RoHS directives if required by your manufacturing standards. Cross-reference the pinout diagram with your PCB layout to match the 8-SOIC-EP footprint. Confirm that the selected supplier provides genuine components with traceability documentation to mitigate counterfeiting risks during assembly.
Selection Notes
Select this component when a compact solution is needed for converting 4.5V to 18V inputs down to lower voltages at 4A. The adaptive COT topology allows for smaller external inductors compared to traditional PWM controllers. Consider the 650kHz frequency as a balance between efficiency and component size. Evaluate the thermal performance of the exposed pad design for your specific board copper area constraints to ensure reliable operation within the specified temperature range.
Part Context
This part belongs to the AP654xx series of adaptive COT buck converters from Diodes Incorporated. It shares architectural similarities with the AP65453 but offers different current handling capabilities. The series is designed for applications requiring high efficiency and fast transient response in space-constrained environments. It complements other PMIC offerings by providing a robust, single-output regulation solution without complex digital interfaces.
Replacement Considerations
The AP65453SP-13 is a related variant within the same family, offering similar functionality but potentially differing in maximum output current or internal resistance characteristics. Verify electrical parameters and pin compatibility before substitution. No direct cross-manufacturer equivalents are confirmed in the provided source data.
