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IR3859MTRPBF is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Infineon Technologies. Its product description is IC REG BUCK ADJ 9A 17PQFN. Review the specifications below when checking this part for your BOM.
Voltage Regulators - DC DC Switching Regulators specifications for IR3859MTRPBF
- Description：IC REG BUCK ADJ 9A 17PQFN
- Series：SupIRBuck®
- Mfr：Infineon Technologies
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：1.5V
- Voltage - Input (Max)：21V
- Voltage - Output (Min/Fixed)：0.7V
- Voltage - Output (Max)：18.9V
- Current - Output：9A
- Frequency - Switching：225kHz ~ 1.65MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：17-PowerVQFN
- Supplier Device Package：17-PQFN (4x5)
- Grade：-
- Qualification：-
Voltage Regulators - DC DC Switching Regulators datasheet and documents for IR3859MTRPBF
Voltage Regulators - DC DC Switching Regulators Overview
The IR3859MTRPBF is a synchronous buck switching regulator IC from Infineon Technologies, housed in a 17-PowerVQFN package. It delivers up to 9A output current with an adjustable voltage range of 0.7V to 0.9 times the input voltage. The device supports a wide input voltage range from 1.5V to 21V and operates at a switching frequency between 250 kHz and 1.5 MHz. It achieves greater than 95% maximum efficiency and functions within a junction temperature range of -40°C to +125°C.
Voltage Regulators - DC DC Switching Regulators Feature Summary
- Synchronous rectification for high efficiency
- Wide input voltage compatibility
- Adjustable output voltage configuration
Voltage Regulators - DC DC Switching Regulators Applications
- Point-of-load regulation
- Industrial equipment power supplies
- Telecommunications infrastructure
Voltage Regulators - DC DC Switching Regulators Procurement Notes
Verify component authenticity through authorized channels due to potential counterfeit risks. Confirm RoHS compliance status and moisture sensitivity level before assembly. Check for end-of-life notifications or discontinuation notices from Infineon. Ensure proper ESD handling procedures are followed during storage and installation to maintain device integrity.
Voltage Regulators - DC DC Switching Regulators Selection Notes
Select this component when a compact, high-efficiency solution is required for single-output applications. Consider the 17-PowerVQFN footprint for space-constrained designs. Evaluate thermal performance requirements against the specified operating temperature range. Compare switching frequency options against electromagnetic interference constraints in the target system.
Voltage Regulators - DC DC Switching Regulators Part Context
This part belongs to the SupIRBuck series, designed for high-density power conversion. It integrates high-side and low-side MOSFETs with control logic. The family targets applications requiring efficient step-down conversion from varying input sources to stable low-voltage outputs for sensitive digital loads.
Voltage Regulators - DC DC Switching Regulators Replacement Considerations
Consult official replacement guides for compatible alternatives if this part is discontinued. Verify pinout compatibility and electrical specifications before substitution.
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