NCP3520DMR2G

Overview

The NCP3520DMR2G is an LDO regulator controller with a fixed 1.2 V output voltage, packaged in Micro8 (SMD/SMT). It operates within a supply voltage range of 4.5 V to 5.5 V and supports up to 3 A output current when paired with an external NMOS FET. The device features a sleep mode operating current below 10 µA and a run mode supply current of approximately 1.2 mA. It includes Non Rush Current on Startup (NRCS) for controlled slew rates, short circuit protection, and thermal shutdown.

Feature Summary

• Fixed 1.2 V output voltage option with 1% tolerance
• Non Rush Current on Startup (NRCS) controls output voltage slew rate
• Integrated short circuit detection and protection logic
• Low standby current consumption in sleep mode

Applications

• Set-Top Boxes
• Gaming Consoles
• LCD Televisions
• FPGA Power Supplies
• Networking Equipment

Procurement Notes

Verify the specific ordering suffix DMR2G corresponds to the Micro8 package and tape & reel shipping configuration. Confirm that the fixed 1.2 V output variant matches the system design requirements, as the NCP3521 offers a 1.5 V alternative. Ensure the external NMOS FET selection aligns with the required current handling and ESR specifications for stability.

Selection Notes

Select this component for applications requiring high-current regulation with ultra-low dropout characteristics. The use of an external NMOS driver allows customization of current capability beyond internal limits. Consider the NRCS pin for managing startup inrush currents and the EN pin for system power management sleep states. Validate external capacitor ESR values to ensure loop stability under varying load conditions.

Part Context

This part belongs to the NCP3520/NCP3521 family of LDO regulator controllers designed for consumer electronics and networking hardware. It serves as a drop-in replacement for certain Rohm BD3520/BD3521 devices. The controller architecture relies on an external NFET to handle the primary load current, providing flexibility in thermal and performance optimization for dense PCB layouts.

Replacement Considerations

Functionally equivalent to Rohm BD3501FVM and BD3502FVM. Direct drop-in replacement for Rohm BD3520FVM and BD3521FVM.