NCP114AMX120TCG

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

The NCP114AMX120TCG is a 300 mA CMOS Low Dropout (LDO) linear voltage regulator manufactured by onsemi. It provides a fixed 1.2 V output with an operating input voltage range of 1.7 V to 5.5 V. The device features a typical quiescent current of 50 µA and standby current of 0.1 µA, utilizing dynamic adjustment for battery-powered applications. It offers high power supply ripple rejection of 75 dB at 1 kHz and ±1% accuracy at room temperature. The regulator includes thermal shutdown and current limit protections and is stable with a 1 µF ceramic output capacitor. It is housed in a UDFN-4 package.

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

• Dynamic quiescent current adjustment optimizes performance for battery-operated portable applications.
• Integrated active output discharge function activates when the enable pin is low.
• Stable operation guaranteed with minimum effective capacitance of 0.22 µF ceramic capacitors.
• Includes thermal shutdown and output current limit protections for robust design.

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

• PDAs and mobile phones
• GPS devices and smartphones
• Wireless LAN and Bluetooth modules
• Portable medical equipment

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

Verify the specific suffix 'TCG' confirms the inclusion of the active output discharge function, as distinct from the 'B' series which lacks this feature. Ensure the UDFN-4 package orientation matches the bottom view pinout diagram provided in the datasheet. Confirm RoHS compliance status through official manufacturer declarations prior to integration into final assemblies.

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

Select this component for space-constrained designs requiring low noise and high PSRR. The UDFN-4 package suits applications needing minimal footprint. Verify that the input voltage remains within the 1.7 V to 5.5 V range and that the load current does not exceed 300 mA. Consider thermal dissipation requirements based on the junction-to-air thermal resistance if operating near maximum limits.

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

This part belongs to the NCP114 family of 300 mA LDO regulators. The 'MX' suffix indicates the UDFN-4 package type, while '120' specifies the 1.2 V fixed output voltage. The 'TCG' suffix denotes the version with active output discharge functionality and Pb-free packaging. This family is designed for low-noise, high-accuracy applications in portable electronics.

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

NCP114AMX120TBG: Identical electrical specifications but lacks the active output discharge function.

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

What is the purpose of the EN pin threshold voltages?

Driving the EN pin above 0.9 V turns the regulator on, while driving it below 0.4 V activates shutdown mode and the active output discharge function.

Is the NCP114AMX120TCG stable with tantalum capacitors?

No, the datasheet recommends against using tantalum capacitors due to their large ESR and temperature-dependent resistance characteristics.