XC9237B2FDMR-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9237B2FDMR-G is a synchronous step-down DC/DC converter from Torex Semiconductor, featuring a built-in 0.42Ω P-channel MOS driver and 0.52Ω N-channel switching transistor. It operates within an input voltage range of 2.0V to 6.0V and delivers up to 600mA output current. The device supports selectable switching frequencies of 1.2MHz or 3.0MHz and allows manual switching between PWM and automatic PWM/PFM modes for optimized efficiency across load ranges. Fixed output voltage options are available with ±2.0% accuracy.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports manual switching between PWM control and automatic PWM/PFM modes for high efficiency across full load ranges
• Integrates low-resistance internal driver and switching transistors to enable use of ceramic capacitors
• Features high-speed soft-start capability for rapid turn-on times
• Includes under-voltage lockout function to protect against unstable input conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronic devices requiring efficient power management
• Embedded systems utilizing single-cell lithium-ion battery inputs
• Low-voltage digital logic circuits needing stable regulated supply rails
• IoT modules operating in space-constrained SOT-25-5 packages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix codes against official datasheets to confirm fixed output voltage values and switching frequency selections. Ensure compatibility with external component ratings for the chosen topology. Confirm RoHS compliance status through manufacturer documentation prior to integration into final assemblies.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Choose this model when manual mode selection is required for precise ripple control. Compare against XC9236 series if automatic light-load efficiency is preferred without user intervention. Verify that the fixed output voltage meets system requirements, as adjustable versions require external resistors. Check thermal performance limits for the intended ambient temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the XC9237 series of synchronous rectification type DC/DC converters. The series is designed for applications demanding high efficiency and compact solutions using minimal external components. It complements other Torex regulators by offering flexible control modes suitable for varying load profiles.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other XC9237 variants with different fixed output voltages or switching frequencies. Cross-reference pinouts and electrical characteristics carefully when considering alternative manufacturers' buck converters.