BD3539FVM-TR

Special Purpose Regulators Overview

The BD3539FVM-TR is a DDR termination regulator manufactured by ROHM Semiconductor, designed for power supply applications in DDR1/2/3 and SDRAM systems. It operates within an input voltage range of 1 V to 5.5 V and provides a maximum output current of 1 A. The device functions with a quiescent supply current of 2 mA and supports an operating supply voltage of 2.7 V to 5.5 V. It is housed in an MSOP-8 package suitable for surface mount installation. The component is rated for a power dissipation of 580 mW and operates reliably across a temperature range from -30°C to +100°C.

Special Purpose Regulators Feature Summary

• Provides dedicated regulation for DDR memory termination circuits
• Supports multiple DDR generations including DDR1, DDR2, and DDR3 as well as SDRAM
• Operates with low quiescent current for efficient power management

Special Purpose Regulators Applications

• Power supply for DDR1 memory modules
• Power supply for DDR2 memory modules
• Power supply for DDR3 memory modules
• SDRAM termination circuitry

Special Purpose Regulators Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with the target design. Confirm that the MSOP-8 footprint matches the PCB layout requirements. Check for any recent lifecycle notifications or obsolescence warnings directly from the manufacturer before finalizing procurement plans.

Special Purpose Regulators Selection Notes

Select this component when designing power supplies for DDR1, DDR2, or DDR3 SDRAM applications requiring a termination regulator. Ensure the system input voltage falls within the 1 V to 5.5 V range and that the thermal environment allows for the specified operating temperature range. Verify that the 1 A output current capability meets the load requirements of the connected memory devices.

Special Purpose Regulators Part Context

This part belongs to the specialized PMIC category focusing on DDR termination regulators. It is distinct from general LDOs or switching regulators by its specific application in memory bus termination. The MSOP-8 package offers a compact solution for space-constrained designs involving high-speed memory interfaces.

Special Purpose Regulators Replacement Considerations

BD3539NUX-TR is a pin-compatible alternative offering the same functional specifications but utilizes a VSON-8 package instead of MSOP-8. Designers must verify footprint compatibility if considering this substitute.