XC9142E39DMR-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9142E39DMR-G is a synchronous step-up DC/DC converter manufactured by Torex Semiconductor. It operates within an input voltage range of 0.65V to 6V and provides a fixed output voltage of 3.9V. The device supports a maximum output current of 800mA and features a switching frequency of 3MHz. Quiescent current is specified at 26uA, with a typical operating supply current of 3mA. It functions reliably across a temperature range of -40°C to +85°C and utilizes a SOT-25-5 surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for enhanced power conversion efficiency
• Supports operation from extremely low input voltages starting at 0.65V
• Incorporates built-in protection mechanisms against overcurrent and thermal overload

Voltage Regulators - DC DC Switching Regulators Applications

• Power management for portable electronic devices requiring stable voltage regulation
• Battery-powered systems utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded circuits in consumer electronics needing compact power solutions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DMR-G' to confirm the fixed 3.9V output voltage and reel packaging configuration. Ensure compatibility with the required SOT-25-5 footprint during PCB layout. Cross-reference RoHS compliance status if environmental regulations apply to the target assembly. Confirm that the 3MHz switching frequency aligns with electromagnetic interference constraints in the final design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.9V output is required from a variable or low-voltage source up to 6V. The 800mA current capability suits moderate load applications. Consider the 3MHz frequency for smaller external passive components compared to lower-frequency alternatives. Evaluate the 26uA quiescent current impact on standby battery life for portable designs.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9142 series of synchronous step-up converters. The series is characterized by high efficiency and low quiescent current consumption. Variants within the family differ primarily in fixed output voltage settings and switching frequencies, allowing designers to tailor performance to specific voltage rails and size constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other XC9142 variants with identical pinouts but different output voltages, such as XC9142E33DMR-G or XC9142E42DMR-G, provided the system voltage requirement changes. Verify that alternative parts maintain the same 3MHz switching frequency and 800mA current rating to ensure circuit stability.