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Product Detailed Parameters
- Description：IC REG BUCK ADJ 6A 34PQFN
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.5V
- Voltage - Input (Max)：24V
- Voltage - Output (Min/Fixed)：0.6V
- Voltage - Output (Max)：5.5V
- Current - Output：6A
- Frequency - Switching：200kHz ~ 1.5MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：34-PowerTFQFN
- Supplier Device Package：34-PQFN (5.5x5)
- Grade：-
- Qualification：-
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Overview
The FAN2356AMPX is a synchronous step-down DC-DC converter manufactured by Fairchild Semiconductor, now part of onsemi. It operates with an input voltage range of 4.5V to 24V and provides an adjustable output voltage from 0.6V to 5.5V. The device supports a maximum output current of 6A and features a switching frequency range between 200 kHz and 1.5 MHz. It has a quiescent current of 24 uA and functions within a minimum operating temperature of -40°C. The component is housed in a 34-pin PQFN package.
Feature Summary
- Synchronous rectification for high efficiency
- Adjustable output voltage capability
- Wide input voltage range support
- Programmable switching frequency
Applications
- Point-of-load regulation
- Industrial power supplies
- Telecommunications equipment
Procurement Notes
Verify the manufacturer designation as onsemi due to the Fairchild Semiconductor integration. Confirm that the underscore character in original Fairchild part numbers has been replaced with a dash in current ordering systems. Check the official onsemi website for the most up-to-date ordering information and updated device numbers to ensure compatibility with modern supply chain requirements.
Selection Notes
Select this regulator when a compact solution is required for converting higher bus voltages down to lower logic or load levels. The wide input range accommodates various industrial and telecom standards. Ensure the application requires an adjustable output within the specified limits and can utilize the programmable frequency feature for EMI optimization or transient response tuning.
Part Context
This component belongs to the TinyBuck family of synchronous buck regulators designed for space-constrained applications. The 34-pin PQFN package allows for high power density in small footprints. As part of the transition from Fairchild to onsemi, this part represents the continuation of established power management solutions with updated branding and documentation standards.
Replacement Considerations
Check for updated part numbers where underscores are replaced by dashes per onsemi nomenclature rules. Verify if newer revisions of the TinyBuck series offer improved thermal performance or additional protection features while maintaining pin compatibility.
