Overview
The NCP303LSN44T1G from ON Semiconductor is a reliable and efficient voltage supervisor IC designed to monitor the supply voltage of a system. This device is particularly suited for keeping tabs on 3.3V or 5V power supplies commonly found in microcontroller-based systems. It provides a reset signal when the voltage drops below a certain level, ensuring smooth and proper system operation, and is essential for maintaining system stability.
The NCP303LSN44T1G is optimized for high-speed and low-voltage operations, offering excellent performance for analog and digital signal switching in various applications.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | onsemi | Package/Case | TSOP-5, SOT23-5 |
| Threshold Voltage | 4.4 V | Output Type | Active Low, Open Drain |
| Number of Inputs Monitored | 1 Input | Manual Reset | No Manual Reset |
| Watchdog Timers | No Watchdog | Battery Backup Switching | Backup |
| Reset Delay Time | Programmable | Supply Voltage - Max | 10 V |
| Minimum Operating Temperature | -40 °C | Maximum Operating Temperature | +125 °C |
| Accuracy | ±2% | Supply Current-Max (Isup) | 0.0013 mA |
| Overvoltage Threshold | 4.488 V | Undervoltage Threshold | 4.312 V |
| Operating Supply Current | 500 nA | Supply Voltage - Min | 0.8 V |
| Technology | CMOS | Terminal Finish | MATTE TIN |
| Terminal Form | GULL WING | Terminal Pitch | 0.95 mm |
Key Features
- Low Quiescent Current (1.6µA): The NCP303LSN44T1G consumes minimal power, making it suitable for battery-powered devices or applications where power consumption is a concern.
- Accurate ±2% Voltage Threshold: This feature ensures that the voltage detector accurately detects the desired threshold voltage, reducing errors and improving overall system performance.
- Fixed 4.4V Voltage Threshold: The NCP303LSN44T1G has a fixed voltage threshold of 4.4V, making it suitable for applications where a specific voltage level needs to be detected.
- Hysteresis for Noise Immunity: This feature helps the device reject noise and spurious signals, ensuring accurate detection even in noisy environments.
- Internal Soft-Start to Reduce Inrush Current: The NCP303LSN44T1G features an internal soft-start circuit that reduces inrush current when the device is powered on, minimizing stress on the power supply and improving overall system reliability.
- Wide Operating Voltage Range (1.5V to 6.0V): The NCP303LSN44T1G can operate over a wide range of input voltages, making it suitable for applications where the power supply voltage may vary.
Applications
- Electric Vehicles: The NCP303LSN44T1G is suitable for electric vehicle battery management systems, where accurate detection of battery voltages is crucial.
- Solar Power Systems: This device can be used in solar power systems to detect the output voltage of solar panels and ensure safe operation.
- Battery Management Systems: The NCP303LSN44T1G is suitable for battery management systems, where accurate detection of battery voltages is necessary to prevent overcharging or undercharging.
- Portable Electronics: This device can be used in portable electronic devices such as smartphones and laptops, where power consumption and noise immunity are critical concerns.
- Industrial Automation: The NCP303LSN44T1G is suitable for industrial automation applications, where accurate detection of voltage levels is necessary to ensure safe operation and prevent equipment damage.
Q & A
- What is the primary function of the NCP303LSN44T1G?
The NCP303LSN44T1G is a voltage supervisor IC designed to monitor the supply voltage of a system and provide a reset signal when the voltage drops below a certain level.
- What is the threshold voltage of the NCP303LSN44T1G?
The threshold voltage of the NCP303LSN44T1G is 4.4V.
- What is the operating temperature range of the NCP303LSN44T1G?
The operating temperature range of the NCP303LSN44T1G is from -40°C to +125°C.
- What is the maximum supply voltage for the NCP303LSN44T1G?
The maximum supply voltage for the NCP303LSN44T1G is 10V.
- Does the NCP303LSN44T1G have a watchdog timer?
No, the NCP303LSN44T1G does not have a watchdog timer.
- What is the quiescent current of the NCP303LSN44T1G?
The quiescent current of the NCP303LSN44T1G is approximately 1.6µA.
- What package type does the NCP303LSN44T1G come in?
The NCP303LSN44T1G comes in a TSOP-5 or SOT23-5 package.
- Is the NCP303LSN44T1G RoHS compliant?
Yes, the NCP303LSN44T1G is RoHS compliant.
- What are some common applications of the NCP303LSN44T1G?
Common applications include electric vehicles, solar power systems, battery management systems, portable electronics, and industrial automation.
- Does the NCP303LSN44T1G have an internal soft-start feature?
Yes, the NCP303LSN44T1G features an internal soft-start circuit to reduce inrush current when the device is powered on.
