Overview
The NCP114ASN300T1G is a high-performance, 300 mA Low Dropout Linear Regulator (LDO) 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 and a standby current consumption of typically 0.1 μA, making it highly suitable for battery-powered applications such as tablets, cellular phones, and wireless devices. The regulator is fully protected against output overload, output short circuit, and overheating, ensuring robust operation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage (VIN) | 1.7 | - | 5.5 | V |
| Output Voltage (VOUT) | - | 3 | - | V |
| Output Current (IOUT) | - | 300 | - | mA |
| Dropout Voltage | - | 135 | - | mV @ 300 mA |
| Quiescent Current | - | 50 | - | μA |
| Standby Current | - | 0.1 | - | μA |
| Power Supply Rejection Ratio (PSRR) | - | 75 dB @ 1 kHz | - | - |
| Thermal Shutdown Threshold | - | 160°C | - | - |
| Package Type | - | TSOP-5 | - | - |
Key Features
- Very low quiescent current of typically 50 μA and standby current consumption of typically 0.1 μA.
- High Power Supply Rejection Ratio (PSRR) of over 75 dB at 1 kHz.
- Low dropout voltage of typically 135 mV at 300 mA.
- Internal current limit and short circuit protection.
- Thermal shutdown protection to prevent overheating.
- Enable pin for device enable/disable and active discharge function.
- Recommended input and output capacitors (1 μF, X5R or X7R) for stability and performance.
Applications
The NCP114ASN300T1G is suitable for various battery-powered applications, including:
- Tablets and cellular phones.
- Wireless devices.
- Other portable electronic devices requiring low power consumption and high PSRR.
Q & A
- What is the typical quiescent current of the NCP114ASN300T1G?
The typical quiescent current is 50 μA. - What is the maximum output current of the NCP114ASN300T1G?
The maximum output current is 300 mA. - What is the dropout voltage of the NCP114ASN300T1G at 300 mA?
The dropout voltage is typically 135 mV at 300 mA. - What is the Power Supply Rejection Ratio (PSRR) of the NCP114ASN300T1G?
The PSRR is over 75 dB at 1 kHz. - Does the NCP114ASN300T1G have thermal shutdown protection?
Yes, it has thermal shutdown protection with a typical threshold of 160°C. - How do I enable or disable the NCP114ASN300T1G?
The device can be enabled or disabled using the EN pin. A voltage greater than 0.9 V enables the device, while a voltage less than 0.4 V disables it. - What type of capacitors are recommended for input and output decoupling?
Ceramic capacitors with X5R or X7R dielectric, 1 μF value, are recommended. - Is the NCP114ASN300T1G protected against short circuits?
Yes, it has internal current limit and short circuit protection. - What is the package type of the NCP114ASN300T1G?
The package type is TSOP-5. - What are some typical applications for the NCP114ASN300T1G?
Typical applications include tablets, cellular phones, wireless devices, and other portable electronic devices.
