ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG BUCK 2.5V/3.3V/5V 10DFN
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：3.5V
- Voltage - Input (Max)：46V
- Voltage - Output (Min/Fixed)：2.5V, 3.3V, 5V
- Voltage - Output (Max)：-
- Current - Output：800mA
- Frequency - Switching：2.2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：Automotive
- Qualification：AEC-Q100
Download product information
Overview
The ARG81880KEJJTR is a synchronous step-down DC-DC switching regulator from Allegro MicroSystems, designed for automotive and industrial applications. It operates with a wide input voltage range and delivers up to 800mA output current. The device features fixed output voltages of 2.5V, 3.3V, or 5V and switches at a frequency of 2.2MHz. Packaged in a WFDFN-10 case, it integrates synchronous rectification for high efficiency.
Feature Summary
- Synchronous buck topology for enhanced power conversion efficiency
- Automotive-grade reliability compliant with AEC-Q100 standards
- Integrated synchronous rectifiers eliminate external diode requirements
Applications
- Automotive infotainment system power distribution
- Industrial control module voltage regulation
- Sensor node power supply conditioning
Procurement Notes
Verify the specific output voltage variant (2.5V, 3.3V, or 5V) required for your design, as these are distinct part numbers within the same series. Confirm that the WFDFN-10 package footprint matches your PCB layout constraints. Ensure thermal management strategies account for the power dissipation characteristics of this synchronous buck regulator under maximum load conditions.
Selection Notes
Select this component when a compact, high-efficiency solution is needed for low-to-medium current loads in space-constrained environments. The 2.2MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the fixed output options to simplify design if standard voltage rails suffice without requiring external feedback resistor networks.
Part Context
This regulator belongs to the ARG81800 series, which targets robust power management in harsh environments. It complements Allegro's portfolio of magnetic sensors and motor drivers by providing stable, clean power supplies for sensitive analog and digital circuits within automotive and industrial systems.
Replacement Considerations
Direct substitutes include other automotive-grade synchronous buck regulators from manufacturers such as Texas Instruments or Analog Devices offering similar current ratings and package dimensions. Verify pin compatibility and thermal performance before swapping.
