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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)：18V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：16V
- Current - Output：4A
- Frequency - Switching：340kHz
- 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 AP65400SP-13 is a synchronous step-down DC/DC buck converter IC manufactured by Diodes Incorporated. It features a wide input voltage range from 4.5V to 23V and delivers a maximum output current of 4A. The device supports adjustable output voltages starting from a minimum reference of 0.925V up to 20V. Operating with a fixed switching frequency of 380kHz, it utilizes peak current mode control for stable performance. The component is housed in an 8-SOIC package with an exposed pad (SO-EP) for thermal management and operates within a temperature range of -40°C to +85°C.
Feature Summary
- Integrated synchronous rectification for high efficiency across load ranges
- Peak current mode control architecture ensuring fast transient response
- Built-in comprehensive protection mechanisms including over-current, over-voltage, and thermal shutdown
Applications
- Point-of-load regulation for industrial equipment
- Power supply stages for embedded computing systems
- Battery-powered portable devices requiring efficient voltage conversion
Procurement Notes
Verify the specific suffix 'SP-13' against the manufacturer's latest datasheet to confirm packaging details and tape-and-reel specifications. Ensure that the 8-SOIC-EP footprint matches your PCB layout requirements. Confirm availability status as older revisions may have different lead times or end-of-life notices compared to newer variants.
Selection Notes
Select this component when a 4A output capability is required with an input voltage up to 23V. The 380kHz switching frequency allows for smaller external inductors and capacitors compared to lower-frequency alternatives. Consider the thermal performance of the exposed pad design for high-current applications where heat dissipation is critical.
Part Context
This part belongs to the AP654xx series of light-load improved synchronous buck converters from Diodes Incorporated. The series is designed to offer high efficiency under both heavy and light load conditions. Similar parts in the family include the AP65402 and AP65403, which differ primarily in their switching frequencies and specific feature sets while maintaining similar current capabilities.
Replacement Considerations
Direct pin-to-pin replacements within the same package are limited. The AP65402SP-13 and AP65403SP-13 are functionally similar but operate at different switching frequencies (500kHz and 750kHz respectively). Substitution requires verification of loop stability and inductor selection due to frequency differences.
