Overview
The NCV303LSN45T1G 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, emphasizing extended battery life. The NCV303LSN45T1G features a highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator, preventing erratic system reset operations.
Key Specifications
| Characteristic | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Input Power Supply Voltage (Pin 2) | V | 0.8 | - | 10 |
| Detector Threshold (Pin 2, Vin Decreasing) | V | 4.365 | 4.410 | 4.500 |
| Detector Threshold Hysteresis (Pin 2, Vin Increasing) | V | 0.135 | 0.225 | 0.315 |
| Supply Current (Pin 2) | μA | 0.33 | 0.52 | 1.4 |
| Reset Output Current (Pin 1, Active Low) | mA | 0.01 | 1.0 | 2.0 |
| Operating Ambient Temperature Range | °C | -40 | - | 125 |
| Delay Capacitor Pin Threshold Voltage (Pin 5) | V | 1.65 | 2.23 | 2.81 |
Key Features
- Ultra-low current consumption (typical quiescent current of 0.5 μA)
- High accuracy undervoltage threshold with hysteresis
- Externally programmable time delay generator
- Wide operating voltage range of 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 NCV303LSN45T1G is suitable for various applications, including:
- Portable microprocessor-based systems where extended battery life is crucial
- Automotive and industrial systems requiring robust voltage monitoring
- Consumer electronics needing reliable power management
- Medical devices that require precise voltage detection and reset functionality
Q & A
- What is the primary function of the NCV303LSN45T1G?
The primary function is to act as a reset controller with an undervoltage detector and programmable time delay generator in microprocessor-based systems.
- What is the typical quiescent current of the NCV303LSN45T1G?
The typical quiescent current is 0.5 μA.
- What is the operating voltage range of the NCV303LSN45T1G?
The operating voltage range is from 0.8 V to 10 V.
- What types of output configurations are available for the NCV303LSN45T1G?
The device is available with complementary or open drain output configurations.
- Can the time delay be programmed externally?
- What is the temperature range for the NCV303LSN45T1G?
The device is specified over the -40°C to +125°C temperature range.
- What is the detector threshold hysteresis for the NCV303LSN45T1G?
The detector threshold hysteresis ranges from 0.135 V to 0.315 V.
- How does the NCV303LSN45T1G 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 are some common applications for the NCV303LSN45T1G?
Common applications include portable microprocessor-based systems, automotive and industrial systems, consumer electronics, and medical devices.
- What is the maximum operating voltage for the NCV303LSN45T1G?
The maximum operating voltage is 10 V.
