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Product Detailed Parameters
- Description：IC REG BUCK ADJ 35A 34WQFN
- Series：-
- Mfr：onsemi
- 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)：4.5V
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：0.5V
- Voltage - Output (Max)：5.5V
- Current - Output：35A
- Frequency - Switching：200kHz ~ 1.8MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：34-PowerWFQFN
- Supplier Device Package：34-WQFN (5x7)
- Grade：-
- Qualification：-
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Overview
The FAN251030MNTXG is a synchronous buck regulator from onsemi, housed in a WQFN-34 package. It supports an input voltage range of 4.5 V to 18 V and delivers up to 35 A output current. The device provides adjustable output voltages between 500 mV and 5.5 V with a single output configuration. Operating frequencies are programmable from 200 kHz to 1.8 MHz. It functions within a temperature range of -40°C to +125°C and includes PMBus interface capabilities for digital control.
Feature Summary
- Integrates a PMBus interface for digital monitoring and control of the switching regulator
- Utilizes synchronous rectification topology to enhance power conversion efficiency
- Features programmable switching frequency to optimize external component size and performance
Applications
- Point-of-load (POL) regulation for high-current digital processors
- Power distribution networks in telecommunications infrastructure equipment
- Industrial automation systems requiring robust DC-DC conversion
Procurement Notes
Verify the specific suffix MNTXG against the manufacturer datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with PMBus communication protocols required by the system controller. Confirm thermal management requirements for the WQFN-34 package under maximum load conditions.
Selection Notes
Select this component when a high-current synchronous buck solution with digital control is required. The wide input voltage range accommodates various bus architectures. Evaluate the thermal dissipation capabilities of the WQFN-34 package against the expected ambient temperature and load profile to ensure reliable operation within the specified junction temperature limits.
Part Context
This part belongs to the FAN251030 series of synchronous buck regulators designed for high-performance applications. The series emphasizes digital control via PMBus, allowing for precise voltage regulation and system monitoring. It targets markets demanding efficient power delivery in compact form factors.
Replacement Considerations
Consult official substitution lists for equivalent current and voltage ratings. Verify pinout compatibility and thermal characteristics before replacing existing designs.
