Overview
The NCP115ASN180T1G is a 300 mA Low Dropout (LDO) regulator produced by ON Semiconductor. This device is designed to provide a stable, accurate 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 | Value | Unit |
|---|---|---|
| Operating Input Voltage Range | 1.7 to 5.5 | V |
| Output Voltage Options | 0.8 to 3.6 (fixed), other options available upon request | V |
| Output Current | 300 | mA |
| Quiescent Current | Typ. 50 | μA |
| Standby Current Consumption | Typ. 0.1 | μA |
| Low Dropout Voltage | Typ. 250 mV @ 300 mA @ 2.8 V | mV |
| Voltage Accuracy | ±1% at Room Temperature | % |
| Power Supply Ripple Rejection | 70 dB at 1 kHz | dB |
| Thermal Shutdown Threshold | Typ. 160°C | °C |
| Package Options | XDFN4, TSOP-5 |
Key Features
- Soft Start feature with two VOUT slew rate speeds
- High Power Supply Ripple Rejection (PSRR) of 70 dB at 1 kHz
- Thermal Shutdown and Current Limit Protections
- Active output discharge function (in NCP115A and NCP115C devices)
- Stable with a 1 μF Ceramic Output Capacitor
- Pb-Free devices
- Dynamic quiescent current adjustment for low IQ consumption at no-load
- Internal pull-down current source on the EN pin
Applications
- PDAs, Mobile phones, GPS, Smartphones
- Wireless Handsets, Wireless LAN, Bluetooth®, Zigbee®
- Portable Medical Equipment
- Other Battery Powered Applications
Q & A
- What is the operating input voltage range of the NCP115ASN180T1G?
The operating input voltage range is from 1.7 V to 5.5 V.
- What are the available output voltage options for the NCP115ASN180T1G?
The device is available in fixed voltage options from 0.8 V to 3.6 V. Other voltage options are available upon request.
- What is the typical quiescent current of the NCP115ASN180T1G?
The typical quiescent current is 50 μA.
- What is the thermal shutdown threshold of the NCP115ASN180T1G?
The thermal shutdown threshold is typically 160°C.
- What are the package options for the NCP115ASN180T1G?
The device is available in XDFN4 and TSOP-5 packages.
- Does the NCP115ASN180T1G have built-in protection features?
Yes, it includes thermal shutdown and current limit protections, as well as short circuit protection.
- How does the soft start feature work on the NCP115ASN180T1G?
The device has two VOUT slew rate speeds, providing flexibility in startup times, which is particularly useful for sensitive devices like camera sensors.
- What is the recommended output capacitor for the NCP115ASN180T1G?
A 1 μF ceramic capacitor is recommended for stability.
- Is the NCP115ASN180T1G suitable for battery-powered applications?
Yes, it is optimized for battery-operated portable devices with dynamic quiescent current adjustment to minimize power consumption.
- How does the enable (EN) pin function on the NCP115ASN180T1G?
The EN pin has an internal pull-down current source; driving EN over 0.9 V turns on the regulator, and driving it below 0.4 V puts the regulator into shutdown mode.
