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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 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)：4.5V
- 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 AP65450SP-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 a 650mOhm high-side MOSFET and features a fixed 650kHz switching frequency. It utilizes adaptive constant on-time (COT) control for fast transient response. The component is housed in an 8-SOIC package with an exposed pad, rated for operation between -40°C and +85°C.
Feature Summary
- Integrates synchronous rectification with a low-on-resistance high-side switch for improved efficiency.
- Employs adaptive constant on-time control architecture to ensure rapid load transient response.
- Includes comprehensive protection mechanisms such as over-current, thermal shutdown, and undervoltage lockout.
Applications
- Point-of-load regulation for industrial equipment
- Power distribution units in embedded systems
- Voltage conversion for communication infrastructure
Procurement Notes
Verify the specific suffix 'SP-13' against the manufacturer's current datasheet to confirm packaging type and marking details. Ensure compatibility with the required PCB footprint for the 8-SOIC exposed pad package. Cross-reference RoHS compliance status if environmental regulations apply to the final assembly. Confirm availability through authorized distributors as supply levels may fluctuate.
Selection Notes
Select this component when a compact solution is needed for converting 4.5V to 18V inputs down to lower voltages. The 4A output capability suits moderate power applications requiring high efficiency. The fixed 650kHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Consider the thermal performance of the exposed pad design for heat dissipation requirements in enclosed spaces.
Part Context
This part belongs to the AP654xx series of synchronous buck converters from Diodes Incorporated. It shares architectural similarities with the AP65453 but differs in maximum output current ratings. The series is designed for general-purpose DC/DC conversion needs in consumer and industrial electronics where space and efficiency are critical constraints.
Replacement Considerations
The AP65453SP-13 is a related variant within the same family, offering similar functionality but potentially different current handling capabilities. Verify pin-to-pin compatibility and electrical parameter overlaps before substitution. Consult official replacement guides for any functional differences in control loops or protection thresholds.
