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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A UDFN303010
- 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：10-UFDFN Exposed Pad
- Supplier Device Package：U-DFN3030-10
- Grade：-
- Qualification：-
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Overview
The AP65455FN-7 is a synchronous buck converter from Diodes Incorporated. It features an adaptive constant-on-time control architecture. The device supports an input voltage range of 4.5V to 18V. It delivers a maximum output current of 4A. The switching frequency is fixed at 650kHz. The output voltage is adjustable from 0.76V to 6V. It utilizes a U-DFN3030-10 package with an exposed pad for thermal management.
Feature Summary
- Adaptive constant-on-time control for fast transient response
- Integrated high-side and low-side power switches
- Fixed 650kHz switching frequency
- Adjustable output voltage capability
Applications
- Point-of-load regulation for embedded systems
- Industrial equipment power distribution
- Consumer electronics power supplies
Procurement Notes
Verify the specific suffix 'FN-7' against the manufacturer datasheet to confirm the tape-and-reel packaging configuration. Ensure the U-DFN3030-10 footprint matches the design layout. Confirm RoHS compliance status through official documentation before procurement.
Selection Notes
Select this component when a 4A output current is required within an 18V input limit. The 650kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the thermal requirements of the application are met by the U-DFN3030-10 package capabilities.
Part Context
This part belongs to the AP65xxx series of synchronous buck converters. It is designed for positive adjustable voltage regulation applications. The series targets compact power solutions requiring high efficiency and small footprint.
Replacement Considerations
The AP65550FN-7 is a documented substitute offering 5A output current in a similar package. Verify pin compatibility and thermal performance differences before substitution.
