NCP161AFCTC280T2G

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The NCP161AFCTC280T2G is a fixed-output low dropout regulator from onsemi, providing a nominal 2.8 V output with a maximum current of 450 mA. It operates within an input voltage range of 1.9 V to 5.5 V and features ultra-low noise (10 µVRMS) and high power supply rejection ratio (98 dB typical). The device includes active discharge functionality and is housed in a WLCSP4 package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low noise performance suitable for RF and analog circuits
• Integrated active discharge function for rapid output voltage removal
• Backside coating for enhanced reliability and protection

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered equipment
• Wireless LAN devices
• Smartphones and tablets
• Cameras, DVRs, STB and camcorders

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering suffix 'C' which denotes backside coating when sourcing this component. Confirm that the active discharge feature aligns with system requirements, as non-active variants exist. Ensure compatibility with the WLCSP4 footprint during PCB layout. Cross-reference the marking code 'E' for correct identification upon receipt.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this variant when board space is constrained by the small WLCSP4 package size. The active discharge feature is critical if rapid power-down sequences are required. Consider the backside coating for applications demanding higher environmental robustness compared to standard versions. Ensure input and output capacitors meet stability requirements.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the NCP161 series of LDO regulators designed for high-performance analog and RF applications. The series offers various output voltages and packages, including XDFN4 and SOT23-5. The AFCTC suffix specifically identifies the 2.8 V fixed output version with active discharge and backside coating in the thinner WLCSP4 form factor.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

NCP161AFCT280T2G (Standard version without backside coating)

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the EN pin?

The EN pin enables or disables the regulator. Applying 1.2 V enables the device, while pulling it below 0.4 V disables it and activates the internal discharge transistor.

Does this device include active discharge?

Yes, the NCP161AFCTC280T2G includes an active discharge function that rapidly removes charge from the output capacitor when the device is disabled.