Overview
The NCP170AMX285TCG is a ultra-low quiescent current, CMOS low dropout (LDO) regulator from onsemi, designed specifically for portable battery-powered applications. This device is part of the NCP170 series and is known for its high efficiency and long battery life. It features a dynamic transient boost for improved transient response, particularly in wireless communication applications.
Key Specifications
| Parameter | Typical Value | Min Value | Max Value | Unit |
|---|---|---|---|---|
| Operating Input Voltage | 2.2 to 5.5 | 2.2 | 5.5 | V |
| Output Voltage | 2.8 | 2.772 | 2.828 | V |
| Output Current | 150 | - | - | mA |
| Quiescent Current | 0.5 | - | 0.9 | μA |
| Dropout Voltage | 170 | - | 240 | mV |
| Line Regulation | 0.05 | - | 0.20 | %/V |
| Load Regulation | 1 | -20 | 20 | mV |
| Power Supply Rejection Ratio | 30 | - | - | dB |
| Thermal Resistance (Junction-to-Air) | 250 | - | - | °C/W |
Key Features
- Ultra-low quiescent current of typically 0.5 μA, ensuring long battery life.
- Dynamic transient boost feature for improved transient response in wireless communication applications.
- Low dropout voltage of typically 170 mV at 150 mA output current.
- High output voltage accuracy of ±1%.
- Stable operation with ceramic capacitors as small as 1 μF.
- Over-current protection and thermal shutdown protection for enhanced reliability.
- Chip enable pin (active high) for easy power management.
- Available in small packages: 1 × 1 mm XDFN4, SOT-563, and TSOP-5.
Applications
The NCP170AMX285TCG is suitable for a variety of applications, including:
- Portable battery-powered devices such as smartphones, tablets, and handheld games.
- Wireless communication devices, including Bluetooth and Wi-Fi modules.
- IoT devices requiring low power consumption and high efficiency.
- Medical devices and wearables that need long battery life.
- Automotive systems where low quiescent current is crucial.
Q & A
- What is the typical quiescent current of the NCP170AMX285TCG?
The typical quiescent current is 0.5 μA. - What is the output voltage range of the NCP170AMX285TCG?
The output voltage is fixed at 2.8 V. - What is the maximum output current of the NCP170AMX285TCG?
The maximum output current is 150 mA. - What is the dropout voltage at 150 mA output current?
The dropout voltage is typically 170 mV at 150 mA. - Does the NCP170AMX285TCG have over-current protection?
Yes, it has over-current protection and thermal shutdown protection. - What are the available package options for the NCP170AMX285TCG?
The device is available in 1 × 1 mm XDFN4, SOT-563, and TSOP-5 packages. - What is the thermal resistance (junction-to-air) for the XDFN4 package?
The thermal resistance is 250 °C/W. - What is the power supply rejection ratio (PSRR) at 1 kHz?
The PSRR is typically 30 dB. - Is the NCP170AMX285TCG stable with ceramic capacitors?
Yes, it is stable with ceramic capacitors as small as 1 μF. - What is the chip enable pin function?
The chip enable pin is active high, allowing for easy power management.
