NCP163AFCS120T2G

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

The NCP163AFCS120T2G is a fixed-output low dropout regulator from onsemi, providing a stable 1.2 V supply with a maximum output current of 250 mA. It operates within an input voltage range of 2.2 V to 5.5 V and features ultra-low noise performance, typically 7.73 µVRMS in the 10 Hz to 100 kHz bandwidth. The device offers high power supply rejection ratio (PSRR), reaching 91 dB at 100 Hz, and maintains ±2% accuracy across load and temperature variations. Packaged in a compact WLCSP4 format measuring 0.64 mm x 0.64 mm x 0.33 mm, it ensures stability with small ceramic capacitors.

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

• Ultra-low noise architecture designed for sensitive RF and analog circuitry
• High power supply rejection ratio ensuring clean power delivery
• Integrated active discharge function for rapid output voltage decay
• Soft-start capability prevents excessive input current during startup

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

• Battery-powered equipment requiring efficient power management
• Wireless LAN devices needing stable voltage rails
• Smartphones and tablets with space-constrained designs
• Cameras, DVRs, set-top boxes, and camcorders

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

Verify the specific suffix 'FCS' corresponds to the WLCSP4 package variant when sourcing. Confirm RoHS compliance and Pb-free status as indicated in the ordering information. Ensure the active discharge feature matches system requirements, as non-discharge variants exist within the same family. Cross-reference the marking code for date code verification upon receipt.

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

Select this component for applications demanding minimal footprint and low noise. The 1.2 V fixed output suits digital logic or reference supplies. Consider thermal dissipation limits based on PCB copper area if operating near maximum current. Verify that the input voltage remains above the dropout threshold under all load conditions to maintain regulation.

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

This part belongs to the NCP163 series of LDO regulators, which are engineered for high PSRR and ultra-low noise. The series supports various output voltages from 1.2 V to 5.3 V and is available in multiple packages including WLCSP4, XDFN4, and SOT23-5L. It targets portable electronics where battery life and signal integrity are critical.

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

Direct substitutes include other NCP163 variants with different output voltages or package types, such as NCP163AFCS180T2G for 1.8 V output. Non-active discharge versions like NCP163BFCS120T2G may replace this unit if fast discharge is not required. Ensure pin compatibility and thermal characteristics match the existing design.