IXD3263A75DMR-G

Voltage Regulators - DC DC Switching Regulators Overview

The IXD3263A75DMR-G is a synchronous step-down DC/DC converter manufactured by Zilog. It operates with an input voltage range up to 18V and provides a fixed output voltage of 1.5V. The device delivers a maximum output current of 500mA and utilizes a switching frequency of 2.2MHz. It features auto-switching between PFM and PWM modes for optimized efficiency across load conditions. The component is housed in a SC-74A (SOT-753) surface-mount package and is rated for an operating temperature range of -40°C to 105°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for enhanced conversion efficiency
• Automatic transition between Pulse Frequency Modulation and Pulse Width Modulation modes based on load demand
• Integrated power switch and control logic within a compact surface-mount footprint

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered electronic devices requiring efficient voltage regulation
• Embedded systems utilizing microcontrollers or digital signal processors
• Communication equipment needing stable low-voltage power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix DMR-G against official Zilog documentation to confirm the SC-74A package type and tape-and-reel configuration. Ensure compatibility with existing PCB footprints, as SOT-753 dimensions vary slightly from standard SC-70 packages. Cross-reference thermal requirements with system design constraints given the 105°C junction temperature rating. Confirm availability through authorized distributors due to potential supply chain fluctuations for legacy PMIC components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.5V output is required from higher voltage rails up to 18V. The 500mA current capability suits moderate-load applications where space is constrained. Consider the 2.2MHz switching frequency for balancing component size and electromagnetic interference. Verify that the automatic PFM/PWM mode switching aligns with the application's efficiency targets under varying load profiles.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the IXD32xx series of synchronous buck converters from Zilog, designed for portable electronics. The series typically offers high efficiency and small form factors. The IXD3263 variant specifically integrates synchronous rectifiers to reduce external component count and improve performance compared to non-synchronous alternatives.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other 1.5V synchronous buck regulators with similar current ratings and packaging, such as parts from TI or Analog Devices. Verify pinout compatibility and thermal characteristics before substitution.