Overview
The NCP161AMX285TBG 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 ultra-low noise, high power supply rejection ratio (PSRR), and low quiescent current. It is capable of supplying up to 450 mA of output current and is available in various package options, including the UDFN-4 (1x1) package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage | 1.9 | 5.5 | V | |
| Output Voltage Range | 1.8 | 5.14 | V | |
| Output Voltage Accuracy | ±2% | % | ||
| Quiescent Current | 18 | 23 | μA | |
| Dropout Voltage at 450 mA | 150 | 255 | mV | |
| PSRR at 1 kHz | 98 | dB | ||
| Output Noise (10 Hz to 100 kHz) | 10 | μVRMS | ||
| Maximum Junction Temperature | 150 | °C | ||
| Package Options | WLCSP4, XDFN4, SOT23-5 |
Key Features
- Ultra-low noise: 10 μVRMS output voltage noise.
- High PSRR: Up to 98 dB at 1 kHz.
- Low quiescent current: Typical 18 μA.
- Low dropout voltage: 150 mV at 450 mA.
- Stable operation with small 1 μF ceramic capacitors.
- Chip enable pin for easy on/off control.
- Thermal shutdown and current limit protection.
- Pb-free and RoHS compliant.
Applications
- Battery-powered equipment.
- Wireless LAN devices.
- Smartphones and tablets.
- Cameras, DVRs, set-top boxes, and camcorders.
Q & A
- What is the maximum output current of the NCP161?
The NCP161 can supply up to 450 mA of output current.
- What is the operating input voltage range of the NCP161?
The operating input voltage range is from 1.9 V to 5.5 V.
- What are the package options available for the NCP161?
The NCP161 is available in WLCSP4, XDFN4, and SOT23-5 packages.
- How does the chip enable pin work on the NCP161?
The chip enable pin (EN) disables the regulator when VEN < 0.4 V and enables it when VEN > 1.2 V.
- What is the typical quiescent current of the NCP161?
The typical quiescent current is 18 μA.
- What is the dropout voltage at 450 mA for the NCP161?
The dropout voltage at 450 mA is typically between 150 mV to 255 mV depending on the output voltage.
- What is the PSRR of the NCP161 at 1 kHz?
The PSRR at 1 kHz is typically 98 dB.
- Is the NCP161 RoHS compliant?
Yes, the NCP161 is Pb-free and RoHS compliant.
- What are some typical applications for the NCP161?
Typical applications include battery-powered equipment, wireless LAN devices, smartphones, tablets, cameras, DVRs, set-top boxes, and camcorders.
- What is the maximum junction temperature for the NCP161?
The maximum junction temperature is 150 °C.
