XC9236B1DD4R-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9236B1DD4R-G is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor. It features a built-in P-channel MOS driver transistor and N-channel MOS switching transistor, supporting an input voltage range of 2.0V to 6.0V. The device provides a fixed output voltage of 1.25V with an accuracy of ±2.0% and delivers an output current of up to 600mA. It operates at a switching frequency of 3MHz and utilizes automatic PWM/PFM switching control for high efficiency across load ranges. The typical quiescent current is 21µA, and it functions within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates built-in P-channel MOS driver and N-channel MOS switching transistors to minimize external component count.
• Employs automatic PWM/PFM switching control to maintain high efficiency from light to heavy loads.
• Supports the use of ceramic capacitors due to integrated driver specifications.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered equipment utilizing single-cell lithium-ion or lithium-polymer batteries
• Embedded systems needing stable 1.25V logic supply rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix D4R against the official datasheet to confirm the fixed output voltage and package type. Ensure compatibility with the required 3MHz switching frequency and SOT-25-5 package dimensions. Cross-reference the manufacturer's ordering information to validate availability and lead times through authorized channels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.25V output is required from a 2V to 6V input source. It is suitable for applications prioritizing high efficiency under varying load conditions without the need for external feedback resistors. Consider the 3MHz frequency for smaller passive component sizes compared to lower-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9236 series of synchronous rectification type DC/DC converters. The series is designed to allow the use of ceramic capacitors and offers high efficiency with minimal external components. The B-type designation indicates a fixed output voltage configuration within the broader product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the official Torex Semiconductor replacement guide for verified substitutes. Ensure any alternative maintains the 600mA output current, 2V-6V input range, and compatible pinout.