Overview
The NCP161AMX280TBG is a linear low-dropout (LDO) voltage regulator produced by onsemi. This device is designed to meet the stringent requirements of RF and analog circuits, offering exceptional performance in terms of noise, power supply rejection ratio (PSRR), and load/line transients. The NCP161 can supply up to 450 mA of output current and is available in various package options, including ultra-small Chip Scale Package (CSP) and XDFN4 packages.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage | 1.9 | 5.5 | V | |
| Output Voltage Range | 1.8 | 5.14 | V | |
| Output Current | 450 | mA | ||
| Output Voltage Accuracy | -2% | +2% | % | |
| Quiescent Current | 18 | 23 | µA | |
| Dropout Voltage (at 450 mA) | 150 | 480 | mV | |
| PSRR (at 1 kHz, 20 mA) | 98 | dB | ||
| Output Noise (10 Hz to 100 kHz, 1 mA) | 14 | µVRMS | ||
| Thermal Shutdown Threshold | 160 | °C |
Key Features
- Ultra-low noise: 10 µVRMS (10 Hz to 100 kHz)
- High PSRR: Typically 98 dB at 1 kHz and 20 mA
- Low quiescent current: Typically 18 µA
- Low dropout voltage: 150 mV at 450 mA
- Very good load and line transients
- Stable with small 1 µF ceramic capacitors
- Available in various packages: WLCSP4, XDFN4, and SOT23-5
- Pb-free and RoHS compliant
- Thermal shutdown and current limit protection
Applications
The NCP161AMX280TBG is particularly suited for applications requiring low noise and high stability, such as:
- RF circuits
- Analog circuits
- Wireless communication devices
- Audio and video equipment
- Medical devices
- Industrial control systems
Q & A
- What is the maximum output current of the NCP161AMX280TBG?
The maximum output current is 450 mA.
- What is the typical quiescent current of the NCP161AMX280TBG?
The typical quiescent current is 18 µA.
- What is the dropout voltage at 450 mA output current?
The dropout voltage ranges from 150 mV to 480 mV depending on the output voltage setting.
- What is the PSRR at 1 kHz and 20 mA output current?
The PSRR is typically 98 dB at 1 kHz and 20 mA.
- What are the package options available for the NCP161AMX280TBG?
The device is available in WLCSP4, XDFN4, and SOT23-5 packages.
- Is the NCP161AMX280TBG Pb-free and RoHS compliant?
Yes, the device is Pb-free and RoHS compliant.
- What is the thermal shutdown threshold of the NCP161AMX280TBG?
The thermal shutdown threshold is 160°C.
- How stable is the output voltage with respect to temperature changes?
The output voltage remains stable over a wide temperature range with an accuracy of ±2% over load and temperature.
- What is the typical output noise of the NCP161AMX280TBG?
The typical output noise is 14 µVRMS over the frequency range of 10 Hz to 100 kHz.
- Does the NCP161AMX280TBG have built-in protection features?
Yes, it includes thermal shutdown and current limit protection.
