Overview
The NCP115ASN180T2G is a high-performance Low Dropout (LDO) voltage regulator produced by onsemi. This device is designed to provide a stable and accurate output voltage with low noise, making it suitable for space-constrained and noise-sensitive applications. It is particularly optimized for battery-operated portable devices, featuring dynamic quiescent current adjustment to minimize power consumption at no-load conditions.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Operating Input Voltage Range | 1.7 to 5.5 | V |
| Output Voltage | 1.8 | V |
| Output Current | 300 | mA |
| Quiescent Current (IOUT = 0 mA) | 50 | μA |
| Standby Current Consumption | 0.1 | μA |
| Dropout Voltage (IOUT = 300 mA, VOUT = 2.8 V) | 250 | mV |
| Output Voltage Accuracy (Room Temperature) | ±1% | |
| Power Supply Ripple Rejection (1 kHz) | 70 dB | |
| Thermal Shutdown Threshold | 160°C | |
| Package Options | XDFN4, TSOP-5 |
Key Features
- Very low quiescent current of typically 50 μA to optimize battery life in portable applications.
- Soft start feature with two VOUT slew rate speed options to prevent inrush current and voltage overshoot.
- High power supply ripple rejection (PSRR) of 70 dB at 1 kHz for low noise output.
- Thermal shutdown and current limit protections to ensure robust operation.
- Stable operation with a 1 μF ceramic output capacitor.
- Enable pin for easy on/off control and active discharge function.
- Low dropout voltage of 250 mV typical at 300 mA output current.
Applications
- PDAs, mobile phones, GPS, and smartphones.
- Wireless handsets, wireless LAN, Bluetooth®, and Zigbee® devices.
- Portable medical equipment.
- Other battery-powered applications requiring low noise and high stability.
Q & A
- What is the operating input voltage range of the NCP115ASN180T2G?
The operating input voltage range is from 1.7 V to 5.5 V. - What is the typical output current of the NCP115ASN180T2G?
The typical output current is 300 mA. - What is the quiescent current of the NCP115ASN180T2G at no-load conditions?
The quiescent current is typically 50 μA. - Does the NCP115ASN180T2G have thermal shutdown protection?
Yes, it has thermal shutdown protection with a threshold of 160°C. - What are the package options available for the NCP115ASN180T2G?
The device is available in XDFN4 and TSOP-5 packages. - How does the enable pin function on the NCP115ASN180T2G?
The enable pin allows for on/off control of the regulator and includes an active discharge function when disabled. - What is the recommended output capacitor value for the NCP115ASN180T2G?
The recommended output capacitor value is 1 μF with an X7R or X5R dielectric. - Does the NCP115ASN180T2G have current limit and short circuit protection?
Yes, it has internal current limit and short circuit protection. - What is the power supply ripple rejection (PSRR) of the NCP115ASN180T2G?
The PSRR is 70 dB at 1 kHz. - Is the NCP115ASN180T2G suitable for noise-sensitive applications?
Yes, it is designed for noise-sensitive applications with low output noise and high PSRR.
