Overview
The NCP161AMX500TBG is a high-performance linear voltage regulator designed by onsemi, specifically tailored for RF and analog circuits. This device is capable of supplying up to 450 mA of output current and is distinguished by its ultra-low noise, high power supply rejection ratio (PSRR), and low quiescent current. The NCP161AMX500TBG is available in various package options, including ultra-small Chip Scale Package (CSP) and XDFN4, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage | 1.9 | 5.5 | V | |
| Output Voltage Accuracy | ±2% | % | ||
| Output Current | 450 | mA | ||
| Quiescent Current | 18 | 23 | μA | |
| Dropout Voltage (IOUT = 450 mA, VOUT = 5.0 V) | 105 | 190 | mV | |
| Power Supply Rejection Ratio (IOUT = 20 mA, f = 1 kHz) | 98 | dB | ||
| Output Voltage Noise (f = 10 Hz to 100 kHz, IOUT = 1 mA) | 14 | μVRMS | ||
| Thermal Shutdown Threshold | 160 | °C |
Key Features
- Ultra-low noise: 10 μVRMS typical output voltage noise.
- High PSRR: Up to 98 dB at 1 kHz.
- Low quiescent current: Typical 18 μA.
- Low dropout voltage: As low as 105 mV at 450 mA for VOUT = 5.0 V.
- Stable operation with small 1 μF ceramic capacitors.
- Available in various packages: WLCSP4, XDFN4, and SOT23-5.
- Pb-free and RoHS compliant.
- Integrated soft-start and current limit.
- Active output discharge resistance (Version A only).
Applications
- Battery-powered equipment.
- Wireless LAN devices.
- Smartphones and tablets.
- Cameras, DVRs, STBs, and camcorders.
Q & A
- What is the maximum output current of the NCP161AMX500TBG?
The maximum output current is 450 mA.
- What is the typical quiescent current of the NCP161AMX500TBG?
The typical quiescent current is 18 μA.
- What is the dropout voltage at 450 mA for a 5.0 V output?
The dropout voltage is typically 105 mV to 190 mV.
- What is the power supply rejection ratio (PSRR) at 1 kHz?
The PSRR is typically 98 dB at 1 kHz.
- What are the package options available for the NCP161AMX500TBG?
The device is available in WLCSP4, XDFN4, and SOT23-5 packages.
- Is the NCP161AMX500TBG Pb-free and RoHS compliant?
- What is the thermal shutdown threshold temperature?
The thermal shutdown threshold temperature is 160°C.
- How does the enable pin function?
The enable pin (VEN) disables the regulator when VEN < 0.4 V and enables it when VEN > 1.2 V.
- What is the typical output voltage noise?
The typical output voltage noise is 14 μVRMS from 10 Hz to 100 kHz at 1 mA output current.
- What are the recommended input and output capacitors?
The device is stable with 1 μF small case size ceramic capacitors for both input and output.
