Overview
The onsemi NCP161ASN180T1G is a high-performance linear low-dropout (LDO) voltage regulator designed to meet the stringent requirements of RF and analog circuits. This regulator is capable of supplying up to 450 mA of output current and is distinguished by its ultra-low noise and high power supply rejection ratio (PSRR). The NCP161ASN180T1G is available in a compact SOT-23-5 package, making it suitable for space-constrained applications. It operates over an input voltage range of 1.9 V to 5.5 V and provides a fixed output voltage of 1.8 V with ±2% accuracy over load and temperature.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (Min) | 1.9 | V |
| Input Voltage (Max) | 5.5 | V |
| Output Voltage (Fixed) | 1.8 | V |
| Dropout Voltage (Max) | 0.48 | V |
| Output Voltage Tolerance | ±2% | |
| Operating Temperature Range | -40°C to +125°C | |
| Regulator Topology | Fixed | |
| Quiescent Current | 18 µA | |
| Number of Outputs | 1 | |
| Package Type | SOT-23-5 | |
| Mounting Type | Surface Mount | |
| Line Regulation | 0.02 %/V | |
| Load Regulation | 0.008 %/mA | |
| PSRR (Typical at 1 kHz) | 98 dB | |
| Output Noise (RMS) | 10 µVRMS |
Key Features
- Ultra-Low Noise: The NCP161ASN180T1G features ultra-low output noise, making it suitable for noise-sensitive RF and analog applications.
- High PSRR: High power supply rejection ratio (PSRR) ensures that the regulator can effectively reject noise from the input power supply.
- Low Quiescent Current: The regulator has a low quiescent current of 18 µA, which is beneficial for power-efficient designs.
- Low Dropout Voltage: A maximum dropout voltage of 0.48 V allows for efficient voltage regulation even at low input voltages.
- Stable with Small Capacitors: The regulator is stable with small 1 µF ceramic input and output capacitors, which helps in reducing the overall component count and board space.
- Thermal Shutdown and Soft-Start: Integrated thermal shutdown and soft-start features enhance the reliability and startup behavior of the regulator.
- Pb-Free and RoHS Compliant: The device is lead-free and compliant with RoHS standards, making it suitable for environmentally friendly designs.
Applications
- RF Circuits: The ultra-low noise and high PSRR make this regulator ideal for RF circuits where signal integrity is crucial.
- Analog Circuits: Suitable for analog circuits that require low noise and stable voltage regulation.
- Wireless Communication Devices: Used in wireless communication devices such as mobile phones, tablets, and other portable electronics.
- Audio Equipment: Applicable in audio equipment where low noise is essential for maintaining sound quality.
- Medical Devices: Can be used in medical devices that require precise and stable voltage regulation.
Q & A
- What is the maximum output current of the NCP161ASN180T1G?
The maximum output current is 450 mA.
- What is the input voltage range for the NCP161ASN180T1G?
The input voltage range is from 1.9 V to 5.5 V.
- What is the fixed output voltage of the NCP161ASN180T1G?
The fixed output voltage is 1.8 V.
- What is the typical quiescent current of the NCP161ASN180T1G?
The typical quiescent current is 18 µA.
- What is the package type of the NCP161ASN180T1G?
The package type is SOT-23-5.
- Is the NCP161ASN180T1G Pb-free and RoHS compliant?
Yes, the device is Pb-free and RoHS compliant.
- What is the operating temperature range of the NCP161ASN180T1G?
The operating temperature range is from -40°C to +125°C.
- What is the typical PSRR at 1 kHz for the NCP161ASN180T1G?
The typical PSRR at 1 kHz is 98 dB.
- What is the output noise (RMS) of the NCP161ASN180T1G?
The output noise (RMS) is 10 µVRMS.
- Does the NCP161ASN180T1G have thermal shutdown and soft-start features?
Yes, the regulator has integrated thermal shutdown and soft-start features.
