Overview
The NCP114ASN290T1G is a high-performance, 300 mA CMOS Low Dropout Linear Regulator produced by onsemi. This device is designed to deliver very high Power Supply Rejection Ratio (PSRR) of over 75 dB at 1 kHz and excellent dynamic performance during load and line transients. It features a very low quiescent current of typically 50 μA, making it highly suitable for battery-powered applications such as tablets, cellular phones, and wireless devices.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Operating Input Voltage (VIN) | - | 1.7 | 5.5 | V |
| Output Voltage (VOUT) | 2.9 | - | - | V |
| Output Current (IOUT) | - | - | 300 | mA |
| Quiescent Current (IQ) | 50 | - | - | μA |
| Dropout Voltage (VDO) at 300 mA | 135 | - | - | mV |
| Power Supply Rejection Ratio (PSRR) at 1 kHz | 75 | - | - | dB |
| Thermal Shutdown Temperature (TSD) | -160 | - | - | °C |
| Package Type | - | - | - | TSOP-5 |
Key Features
- Low Dropout Voltage: Typical 135 mV at 300 mA output current.
- High PSRR: Over 75 dB at 1 kHz, ensuring excellent noise rejection.
- Low Quiescent Current: Typically 50 μA, making it suitable for battery-powered devices.
- Enable/Disable Function: EN pin allows for device enable/disable and active discharge control.
- Thermal Shutdown Protection: Protects the device from overheating by disabling it when the die temperature exceeds 160°C.
- Output Current Limitation and Short Circuit Protection: Internally limited to 600 mA, with short circuit protection up to 630 mA.
- Robust Design: Protected against output overload, short circuit, and overheating conditions.
Applications
The NCP114ASN290T1G is particularly suited for various battery-powered applications, including:
- Tablets and cellular phones.
- Wireless devices.
- Other portable electronic devices requiring low power consumption and high efficiency.
Q & A
- What is the typical quiescent current of the NCP114ASN290T1G?
The typical quiescent current is 50 μA.
- What is the maximum output current of the NCP114ASN290T1G?
The maximum output current is 300 mA.
- What is the dropout voltage at 300 mA output current?
The dropout voltage is typically 135 mV at 300 mA.
- What is the Power Supply Rejection Ratio (PSRR) at 1 kHz?
The PSRR is over 75 dB at 1 kHz.
- How does the enable/disable function work?
The EN pin allows for device enable/disable and active discharge control. If the EN pin voltage is below 0.4 V, the device is disabled; if it is above 0.9 V, the device is enabled.
- What protection features does the NCP114ASN290T1G have?
The device has thermal shutdown protection, output current limitation, and short circuit protection.
- What is the recommended input capacitor value and type?
A 1 μF Ceramic X5R or X7R capacitor is recommended for the input.
- What is the recommended output capacitor value and type?
A 1 μF Ceramic X5R or X7R capacitor is recommended for the output.
- What package type is the NCP114ASN290T1G available in?
The device is available in a TSOP-5 package.
- What are some common applications for the NCP114ASN290T1G?
Common applications include tablets, cellular phones, wireless devices, and other battery-powered electronic devices.
