XC9237B39D4R-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9237B39D4R-G is a synchronous step-down DC/DC converter from Torex Semiconductor. It provides a fixed output voltage of 3.9V with a maximum output current of 600mA. The device operates within an input voltage range of 2V to 6V and utilizes a switching frequency of 1.2MHz. It features a low operating supply current of 15µA. The component is housed in a compact 6-pin XDFN package with an exposed pad, suitable for surface-mount applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification topology for high efficiency
• Built-in driver transistor with low on-resistance
• Compact footprint for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems needing stable voltage regulation
• Embedded circuits utilizing low-power DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix D4R-G against official datasheets to confirm the 6-XDFN package configuration. Ensure compatibility with thermal requirements due to the exposed pad design. Cross-reference part numbers with manufacturer documentation to avoid confusion with similar series variants. Confirm RoHS compliance status through certified supplier channels before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.9V output is required from a 2V to 6V input source. The 600mA current capacity suits moderate load applications. Consider the 1.2MHz switching frequency for balancing component size and efficiency. The SOT-25 or XDFN packages offer different thermal and spatial trade-offs; verify the exact package code matches the PCB layout constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9237 series of synchronous step-down converters. The series includes various output voltage options and package types. The XC9237B39D4R-G specifically denotes the 3.9V fixed output variant in the XDFN-6 package. This series is designed for portable equipment requiring high efficiency and small form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other XC9237 series parts with identical output voltage and package, such as XC9237B39C4R-G if pinout compatibility is verified. Check for equivalent current ratings and switching frequencies. Ensure thermal performance matches the original design requirements when swapping components.