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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 10DFN
- Series：-
- Mfr：MaxLinear, Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：5.5V ~ 40V
- Frequency - Switching：100kHz ~ 800kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, On Time Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-VFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The XR71211EH-F is a synchronous buck DC-DC switching controller from MaxLinear. It operates with an input voltage range of 5.5V to 40V and supports adjustable output voltages. The device features a programmable switching frequency between 100kHz and 800kHz. It utilizes a constant on-time control architecture for fast transient response. The component is housed in a compact 10-DFN (3x3) package.
Feature Summary
- Synchronous rectification topology for high efficiency
- Constant on-time control mode for stability
- Programmable switching frequency selection
- Wide input voltage capability
Applications
- Industrial power supplies
- Telecommunications equipment
- Point-of-load regulation modules
Procurement Notes
Verify the specific suffix against official documentation, as variations may exist within the family. Confirm RoHS compliance status through the manufacturer's current datasheet or product change notifications. Ensure the ordering part number matches the required package type and temperature grade before finalizing procurement orders.
Selection Notes
Select this controller when a wide input voltage range up to 40V is required for step-down conversion. The fixed 3x3mm footprint suits space-constrained designs. Consider the internal gate drivers and control loop characteristics for stability with external MOSFETs. Verify thermal performance requirements for the DFN package under maximum load conditions.
Part Context
This component belongs to the XR75100 series of synchronous buck controllers. The series is designed for applications requiring robust performance across varying input voltages. MaxLinear integrates these controllers into broader power management solutions for industrial and communication systems.
Replacement Considerations
Public documents indicate that XR71211EHMTR-F and XR71211EHTR-F are related variants within the same family. These parts share identical electrical specifications but differ in packaging format. Verify pinout compatibility before substitution.
