NCP121AMX185TCG

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

The NCP121AMX185TCG is a high-accuracy, very low dropout voltage regulator from onsemi. It features a 150 mA output current capability and utilizes an NMOS pass transistor with a separate bias supply (VBIAS). The device provides a fixed 1.85 V output voltage with ±1.0% accuracy over line, load, and temperature conditions. Operating input voltage ranges from 0.8 V to 5.5 V, while the bias voltage range is 2.4 V to 5.5 V. It includes logic level enable control, active output discharge, and thermal shutdown protection within an XDFN6 package.

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

• Features a separate bias supply pin for optimized performance in battery-operated portable applications.
• Includes logic level enable input for ON/OFF control and active output discharge option.
• Stable with small ceramic capacitors, requiring only 1 µF effective capacitance.
• Provides ultra-low dropout voltage and very low bias input current.

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

• Battery-powered equipment
• Smartphones and tablets
• Cameras, DVRs, set-top boxes, and camcorders

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

Verify the specific ordering suffix TCG confirms the XDFN6 package and tape & reel shipping configuration. Confirm RoHS compliance status through official documentation. Ensure the marking code matches the 1.85 V output variant. Check for any recent product change notices or end-of-life announcements directly from the manufacturer before finalizing procurement plans.

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

Select this component when space-constrained designs require a stable, noise-sensitive power rail. The separate bias pin allows independent optimization of internal control circuitry versus the main input supply. Verify that the application can provide the required minimum bias voltage relative to the output voltage to maintain regulation and stability under all operating conditions.

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

This part belongs to the NCP121 series of high-accuracy VLDO regulators. The series offers various fixed output voltages ranging from 0.8 V to 2.1 V. All variants share the same XDFN6 package and core architecture, differing primarily in the nominal output voltage setting and corresponding marking codes.

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

Other NCP121 variants with different output voltages (e.g., NCP121AMX180TCG) may be considered if the system design allows for voltage adjustment. Ensure the replacement maintains the same package type and electrical characteristics regarding dropout voltage and current limits.