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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2.5A 8DFN
- 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)：2.7V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：5.5V
- Current - Output：2.5A
- Frequency - Switching：1.5MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 80°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WDFN Exposed Pad
- Supplier Device Package：8-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The AUR9718BGD is a synchronous step-down DC-DC converter manufactured by Diodes Incorporated. It operates with an input voltage range of 2.7V to 5.5V and provides an adjustable output voltage from 0.8V to 5.5V. The device delivers a continuous output current of 2.5A and utilizes a fixed switching frequency of 1.5MHz. It features a single positive output configuration and is housed in an 8-WDFN package with an exposed pad, measuring 3x3mm. The component supports surface mount installation and functions within a temperature range of -40°C to 80°C.
Feature Summary
- Synchronous rectification architecture for improved efficiency
- Adjustable output voltage capability via external resistors
- Integrated thermal protection mechanisms
Applications
- Point-of-load regulation for portable electronics
- Power supply stages for embedded systems
- Battery-powered device voltage conversion
Procurement Notes
Verify component authenticity through authorized channels as the part is obsolete. Confirm package integrity and pin alignment against the 8-WDFN specification. Review the manufacturer's End-of-Life notification dated November 7, 2018, for transition planning. Ensure replacement components meet identical electrical and mechanical requirements.
Selection Notes
Select this component for designs requiring a compact 2.5A buck solution with a 1.5MHz frequency. The 8-WDFN package suits space-constrained layouts. Verify that the required output voltage falls within the 0.8V to 5.5V adjustable range. Consider the limited operating temperature range when evaluating environmental conditions.
Part Context
This device belongs to the AUR9718 series of synchronous buck regulators. It is designed for applications needing efficient power conversion from a single-cell lithium-ion battery or similar 5V rail sources. The series emphasizes high power density and stable performance in small form factors.
Replacement Considerations
Officially documented substitutes include AP3441SHE-7B and AUR9719AGD. Verify compatibility regarding output current, package dimensions, and control interface before implementation.
