XC9237G18D4R-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9237G18D4R-G is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor. It features a built-in driver transistor with an on-resistance of 0.42Ω, supporting a maximum output current of 600mA. The device operates within an input voltage range of 1.8V to 6V and provides a fixed output voltage of 1.8V. It utilizes a 1.2MHz switching frequency and maintains a low quiescent current of 15µA. The component is housed in a compact 6-pin XDFN package (XDFN-B, 1.6x1.2mm) and functions reliably across an operating temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-efficiency synchronous rectification with a built-in N-channel driver FET to minimize conduction losses.
• Maintains stable regulation through internal compensation, reducing the requirement for external components.
• Incorporates comprehensive protection mechanisms including over-current protection and thermal shutdown to ensure operational safety.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management from single-cell lithium-ion batteries
• Embedded systems utilizing microcontrollers or sensors powered by 1.8V logic levels
• Battery-operated consumer electronics needing extended runtime through low standby current consumption

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix D4R-G corresponds to the required tape-and-reel packaging configuration and marking code. Confirm that the 1.8V fixed output variant aligns with the target circuit design requirements. Ensure compatibility with the specified XDFN-B footprint during PCB layout verification to prevent assembly errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8V output is required from a 1.8V to 6V input source. The 600mA current capacity suits moderate load applications. Consider the 1.2MHz frequency for balancing component size and efficiency. Verify that the 15µA quiescent current meets system standby specifications. Ensure the thermal performance of the XDFN-B package supports the expected power dissipation in the final enclosure.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9237 series of synchronous step-down converters. The series offers various output voltage options and package types to accommodate diverse design constraints. The G-series designation typically indicates specific package and pinout configurations distinct from other series variants like A or C.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Cross-reference with XC9237G18CER-G or XC9237G18CMR-G if different package footprints are acceptable. Verify electrical equivalence for input/output voltages and current ratings before substitution.