XC9237C33DMR-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9237C33DMR-G is a synchronous step-down DC/DC converter from the XC9237 series by Torex Semiconductor. It features a fixed output voltage of 3.3V and supports a maximum output current of 600mA. The device operates within an input voltage range of 1.8V to 6V and utilizes a 1.2MHz switching frequency. It is housed in a compact SOT-25 (SC-74A) package with five terminals. The component functions as a buck regulator with current-mode control, designed for high efficiency across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification topology utilizing built-in P-channel driver and N-channel switching transistors
• Manual selectable operation modes between PWM and automatic PWM/PFM switching
• Optimized internal soft start and current control circuits
• Built-in Under Voltage Lock Out (UVLO) function

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered equipment operating within specified voltage ranges
• Embedded systems utilizing ceramic capacitors for filtering
• Applications demanding low ripple and fast transient response

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DMR' against official Torex documentation to confirm pinout compatibility and package dimensions. Ensure the fixed 3.3V output aligns with system requirements, as adjustable variants exist within the same series. Confirm thermal performance specifications for the intended operating environment before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a fixed 3.3V output is required without external resistor programming. The D-type designation indicates a 1.8V minimum input voltage, suitable for single-cell lithium battery applications. Compare against XC9237B or C types if different input ranges or output voltages are needed. Verify that the 600mA current rating meets peak load demands.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the XC9235/XC9236/XC9237 series of 600mA synchronous step-down converters. The XC9237 variant specifically allows manual switching between PWM and PWM/PFM modes. It shares the series' characteristic low standby current and compatibility with small external components, distinguishing it from non-synchronous or fixed-frequency-only regulators.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers for XC9237C33DMR-G were not found in the provided source material. Cross-reference with other XC9237 series variants only if electrical parameters match exactly.