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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A U-QFN4040-16
- 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)：3.8V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：36V
- Current - Output：3A
- Frequency - Switching：500kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：16-UQFN Exposed Pad
- Supplier Device Package：U-QFN4040-16/SWP (Type UXB)
- Grade：-
- Qualification：-
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Overview
The AP64303QFVBW-13 is a high-efficiency automotive-grade synchronous buck converter manufactured by Diodes Incorporated. It integrates high-side and low-side power MOSFETs to achieve up to 95% efficiency. The device supports a wide input voltage range of 3.8 V to 40 V and delivers a continuous output current of 3 A. It features adjustable switching frequency, typically set at 500 kHz, and utilizes current mode control for stable loop performance. The output voltage is adjustable from 0.8 V to 36 V. Key protection mechanisms include over-current protection with hiccup mode, thermal protection, and soft discharge capabilities.
Feature Summary
- Integrates high-side and low-side power MOSFETs for high efficiency
- Supports wide input voltage range suitable for automotive applications
- Features adjustable switching frequency and external soft-start options
- Includes comprehensive protection against over-current and thermal stress
Applications
- Automotive infotainment systems
- Distributed power management in vehicles
- High-efficiency DC/DC conversion modules
Procurement Notes
Verify the specific suffix '13' indicates the tape and reel packaging configuration as per official Diodes Incorporated documentation. Confirm that the component meets AEC-Q100 qualification standards required for automotive deployment. Ensure compatibility with the U-QFN4040-16 package dimensions during PCB layout. Cross-reference the exact part number with manufacturer datasheets to validate pinout and electrical specifications before integration.
Selection Notes
Select this component when a 3 A continuous load capability is required within a compact form factor. The integrated MOSFET design reduces external component count compared to discrete solutions. The wide input voltage range accommodates various automotive bus architectures. Current mode control simplifies compensation network design. Verify that the thermal requirements of the application are met by the U-QFN package's heat dissipation characteristics.
Part Context
This part belongs to the AP64203Q/AP64303Q family of high-performance synchronous buck converters designed for automotive environments. The AP64303 variant specifically provides 3 A output capacity, distinguishing it from the 2 A AP64203 model. Both devices share similar architectural features, including adjustable frequency and integrated power stages, tailored for space-constrained automotive electronics.
Replacement Considerations
The AP64203Q serves as a lower current alternative within the same family. Other automotive-grade buck converters from Diodes Incorporated may offer different current ratings or input voltage ranges. Verify pin-to-pin compatibility and electrical parameter alignment when considering substitutes from other manufacturers.
