Overview
The NCV303LSN25T1G is a part of the NCP303 series, which are second-generation ultra-low current voltage detectors produced by onsemi. These devices are designed for use as reset controllers in portable microprocessor-based systems, where extended battery life is crucial. The NCV303LSN25T1G features a highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator, preventing erratic system reset operations.
Key Specifications
| Characteristic | Unit | Typical | Minimum | Maximum |
|---|---|---|---|---|
| Detector Threshold (VDET−) | V | 2.45 | 2.40 | 2.50 |
| Detector Threshold Hysteresis (VHYS) | V | 0.075 | 0.065 | 0.085 |
| Supply Current (Iin) | μA | 0.25 | 0.20 | 0.50 |
| Operating Voltage Range (Vin) | V | 0.8 to 10 | 0.55 | 10 |
| Reset Output Current (IOUT) - Active Low | mA | 1.0 | 0.01 | 2.0 |
| Delay Capacitor Pin Threshold Voltage (VTCD) | V | 1.65 to 2.23 | 1.49 | 2.53 |
| Delay Pullup Resistance (RD) | MΩ | 1.0 | 0.5 | 2.0 |
| Operating Ambient Temperature Range | °C | -40 to +125 | -40 | +125 |
Key Features
- Ultra-low quiescent current of 0.5 μA typical
- High accuracy undervoltage threshold with 2.0% tolerance
- Externally programmable time delay generator
- Wide operating voltage range from 0.8 V to 10 V
- Complementary or open drain output configurations
- Active low or active high reset options
- Specified over the -40°C to +125°C temperature range
Applications
The NCV303LSN25T1G is ideal for use in portable microprocessor-based systems, such as handheld devices, battery-powered equipment, and other applications where low power consumption and reliable reset functionality are essential. It is also suitable for automotive and industrial applications requiring robust voltage monitoring and reset control.
Q & A
- What is the primary function of the NCV303LSN25T1G?
The primary function of the NCV303LSN25T1G is to act as a reset controller in microprocessor-based systems, ensuring reliable system operation by monitoring the voltage and generating a reset signal if the voltage falls below a specified threshold.
- What is the typical quiescent current of the NCV303LSN25T1G?
The typical quiescent current of the NCV303LSN25T1G is 0.5 μA.
- What is the accuracy of the undervoltage threshold?
The undervoltage threshold has a high accuracy with a tolerance of 2.0%.
- Can the time delay be programmed externally?
- What is the operating voltage range of the NCV303LSN25T1G?
The operating voltage range is from 0.8 V to 10 V.
- What types of output configurations are available?
The device is available with either complementary or open drain output configurations, and it can provide active low or active high reset signals.
- What is the temperature range for the NCV303LSN25T1G?
The device is specified to operate over the -40°C to +125°C temperature range.
- What are some typical applications for the NCV303LSN25T1G?
Typical applications include portable microprocessor-based systems, handheld devices, battery-powered equipment, automotive, and industrial applications.
- How does the device prevent erratic system reset operations?
The device prevents erratic system reset operations through its highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator.
- What is the significance of the NCV prefix in the part number?
The NCV prefix indicates that the device is suitable for automotive and other applications requiring unique site and control change requirements.
