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Product Detailed Parameters
- Description：IC REG CTRLR BUCK U-QFN3535-14
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 26V
- Frequency - Switching：-
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, On Time Control, Phase Control, Power Good
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：14-VFQFN Exposed Pad
- Supplier Device Package：U-QFN3535-14
- Grade：-
- Qualification：-
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Overview
The AP3591FNTR-G1 is a single-phase synchronous buck controller manufactured by Diodes Incorporated. It operates within an input voltage range of 4.5V to 28V and supports output voltages adjustable from 0.6V to 20V. The device integrates high-side and low-side gate drivers for external N-channel MOSFETs, enabling efficient power conversion in compact designs.
Feature Summary
- Integrates dedicated high-side and low-side gate drivers for external N-channel MOSFETs
- Supports adjustable output voltage ranging from 0.6V to 20V
- Operates with input supply voltages between 4.5V and 28V
Applications
- Point-of-load (POL) regulation for industrial equipment
- Power distribution systems in telecommunications infrastructure
- Voltage regulation for embedded computing modules
Procurement Notes
Verify the specific suffix G1 against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Confirm availability as components may be subject to end-of-life notices or supply chain constraints. Ensure the ordering information matches the exact package type required for your PCB layout.
Selection Notes
Select this component when designing a synchronous buck converter requiring independent control of high-side and low-side FETs. It is suitable for applications needing wide input voltage ranges and programmable output levels. Evaluate thermal performance based on external MOSFET selection and PCB copper area.
Part Context
This part belongs to the AP359x series of synchronous buck controllers from Diodes Incorporated. These devices are designed to replace traditional PWM controllers by integrating gate drivers, reducing component count and board space while maintaining high efficiency in DC-DC conversion applications.
Replacement Considerations
Check for direct replacements within the AP359x family, such as the AP3595, which offers dual-phase capabilities. Verify that any substitute maintains the same U-QFN3535-14 package and electrical specifications to ensure mechanical and functional compatibility.
