Overview
The NCP115ASN250T2G is a high-performance 300 mA Low Dropout Linear Regulator (LDO) produced by onsemi. This device is designed to provide a very stable, accurate voltage with low noise, making it suitable for space-constrained, 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 | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage (VIN) | 1.7 | 5.5 | V | |
| Output Voltage (VOUT) | 0.8 | 3.6 | V | |
| Quiescent Current (IQ) | 50 | 95 | μA | |
| Dropout Voltage (VDO) at 300 mA | 250 | 320 | mV (VOUT = 2.8 V) | |
| Output Voltage Accuracy | ±1% | % (at Room Temperature) | ||
| Power Supply Ripple Rejection (PSRR) | 70 | dB (at 1 kHz) | ||
| Thermal Shutdown Temperature (TSD) | 160 | °C | ||
| Output Current Limit (ICL) | 300 | 600 | mA | |
| Shutdown Current (IDIS) | 0.01 | 1 | μA | |
| EN Pin Threshold Voltage | 0.4 | 0.9 | V |
Key Features
- Very low quiescent current of typical 50 μA, with dynamic quiescent current adjustment for no-load conditions.
- Soft Start feature with two VOUT slew rate speeds: normal (190 mV/μs) and slow (20 mV/μs) options.
- Standby current consumption as low as 0.1 μA.
- High Power Supply Ripple Rejection (PSRR) of 70 dB at 1 kHz.
- Thermal shutdown and current limit protections for robust design.
- Available in XDFN4 and TSOP-5 packages.
- Stable with a 1 μF ceramic output capacitor.
- Active output discharge function in certain versions (NCP115A and NCP115C).
Applications
- PDAs, mobile phones, GPS, and smartphones.
- Wireless handsets, wireless LAN, Bluetooth®, and Zigbee® devices.
- Portable medical equipment.
- Other battery-powered applications.
Q & A
- What is the operating input voltage range of the NCP115ASN250T2G?
The operating input voltage range is from 1.7 V to 5.5 V.
- What is the typical quiescent current of the NCP115ASN250T2G?
The typical quiescent current is 50 μA.
- What are the available output voltage options for the NCP115?
The NCP115 is available in fixed voltage options ranging from 0.8 V to 3.6 V.
- What is the dropout voltage at 300 mA for a 2.8 V output?
The dropout voltage at 300 mA for a 2.8 V output is typically 250 mV.
- Does the NCP115 have thermal shutdown protection?
- What is the power supply ripple rejection (PSRR) of the NCP115?
The PSRR is 70 dB at 1 kHz.
- What are the package options for the NCP115?
The NCP115 is available in XDFN4 and TSOP-5 packages.
- Is the NCP115 stable with a 1 μF ceramic output capacitor?
- Does the NCP115 have an active output discharge function?
- What are some typical applications for the NCP115?
