Overview
The NCV303LSN30T1G 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 NCV303LSN30T1G 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 | Max | |
|---|---|---|---|---|
| Input Power Supply Voltage (Pin 2) | V | 0.8 | - | 10 |
| Detector Threshold (Pin 2, Vin Decreasing) | V | 2.940 | 3.0 | 3.060 |
| Detector Threshold Hysteresis (Pin 2, Vin Increasing) | V | 0.090 | 0.150 | 0.210 |
| Quiescent Current | μA | - | 0.5 | - |
| Output Voltage (Pin 1) | V | -0.3 | - | Vin + 0.3 |
| Output Current (Pin 1) | mA | - | - | 70 |
| Operating Ambient Temperature Range | °C | -40 | - | 125 |
| Delay Capacitor Pin Threshold Voltage (Pin 5) | V | 1.49 | 2.01 | 2.53 |
| Delay Pullup Resistance (Pin 5) | MΩ | 0.5 | 1.0 | 2.0 |
Key Features
- Ultra-low quiescent current of 0.5 μA typical, ensuring extended battery life in portable systems.
- High accuracy undervoltage threshold with a tolerance of ±2.0%.
- Externally programmable time delay generator to customize the reset timing.
- Wide operating voltage range from 0.8 V to 10 V.
- Open drain N-Channel output with an active low reset output.
- Complementary output configuration available in other models of the series.
- Specified over the -40°C to +125°C temperature range.
- NCV prefix available for automotive and other applications requiring unique site and control change requirements.
Applications
- Portable microprocessor-based systems where extended battery life is critical.
- Automotive systems requiring robust and reliable voltage detection.
- Industrial control systems needing accurate and stable voltage monitoring.
- Consumer electronics such as handheld devices, wearables, and IoT devices.
- Medical devices that require precise voltage detection for safety and reliability.
Q & A
- What is the primary function of the NCV303LSN30T1G?
The primary function of the NCV303LSN30T1G is to act as a reset controller in microprocessor-based systems, ensuring the system resets correctly when the voltage drops below a certain threshold.
- What is the quiescent current of the NCV303LSN30T1G?
The quiescent current of the NCV303LSN30T1G is typically 0.5 μA.
- What is the operating voltage range of the NCV303LSN30T1G?
The operating voltage range of the NCV303LSN30T1G is from 0.8 V to 10 V.
- How is the time delay for the reset output programmed?
The time delay for the reset output is externally programmable using a capacitor connected to the delay pin.
- What type of output does the NCV303LSN30T1G have?
The NCV303LSN30T1G has an open drain N-Channel output with an active low reset output.
- What is the temperature range over which the NCV303LSN30T1G is specified?
The NCV303LSN30T1G is specified over the -40°C to +125°C temperature range.
- Can the NCV303LSN30T1G be used in automotive applications?
- What is the detector threshold hysteresis of the NCV303LSN30T1G?
The detector threshold hysteresis of the NCV303LSN30T1G is between 0.090 V and 0.210 V.
- How does the delay pullup resistance affect the operation of the NCV303LSN30T1G?
The delay pullup resistance, which ranges from 0.5 MΩ to 2.0 MΩ, influences the timing of the reset output by affecting the charging rate of the external capacitor connected to the delay pin.
- What is the maximum output current of the NCV303LSN30T1G?
The maximum output current of the NCV303LSN30T1G is 70 mA.
