Overview
The NCP303LSN26T1G 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 NCP303 series features an open-drain N-Channel output with an active low reset output, making them ideal for applications requiring precise voltage monitoring and reset functionality.
Key Specifications
| Characteristic | Unit | Min | Max | |
|---|---|---|---|---|
| Input Power Supply Voltage (Pin 2) | V | 0.8 | - | 10 |
| Detector Threshold (Pin 2, Vin Decreasing) | V | 2.548 | 2.6 | 2.652 |
| Detector Threshold Hysteresis (Pin 2, Vin Increasing) | V | 0.078 | 0.13 | 0.182 |
| Supply Current (Pin 2) | μA | 0.25 | 0.50 | 1.0 |
| 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 | 1.65 | 2.23 | 2.81 |
Key Features
- Ultra-Low Current Consumption: Typical quiescent current of 0.5 μA, ensuring extended battery life in portable systems.
- High Accuracy Undervoltage Detection: Detector threshold accuracy of ±2.0% over the operating temperature range.
- Externally Programmable Time Delay Generator: Allows for customizable delay times using an external capacitor.
- Wide Operating Voltage Range: Operates from 0.8 V to 10 V, making it versatile for various applications.
- Open Drain N-Channel Output: Provides an active low reset output, suitable for systems requiring this configuration.
- Temperature Stability: Specified over the -40°C to +125°C temperature range, ensuring reliable operation in diverse environments.
Applications
- Portable Microprocessor-Based Systems: Ideal for battery-powered devices where low power consumption is critical.
- Reset Controllers: Used to ensure proper system reset in case of undervoltage conditions.
- Automotive and Industrial Systems: Suitable for applications requiring robust voltage monitoring and reset functionality.
- Consumer Electronics: Applicable in devices such as handheld gadgets, wearables, and other low-power consumer electronics.
Q & A
- What is the typical quiescent current of the NCP303LSN26T1G?
The typical quiescent current is 0.5 μA.
- What is the operating voltage range of the NCP303LSN26T1G?
The device operates from 0.8 V to 10 V.
- What type of output does the NCP303LSN26T1G have?
The device has an open-drain N-Channel output with an active low reset.
- How is the time delay generator programmed in the NCP303LSN26T1G?
The time delay is programmable using an external capacitor connected to the delay capacitor pin.
- What is the detector threshold accuracy of the NCP303LSN26T1G?
The detector threshold accuracy is ±2.0% over the operating temperature range.
- What is the maximum output current of the NCP303LSN26T1G?
The maximum output current is 70 mA.
- What is the operating temperature range of the NCP303LSN26T1G?
The device operates over a temperature range of -40°C to +125°C.
- Can the NCP303LSN26T1G be used in automotive applications?
Yes, the device is suitable for automotive and other applications requiring robust voltage monitoring and reset functionality.
- What is the purpose of the delay capacitor pin in the NCP303LSN26T1G?
The delay capacitor pin is used to program the time delay for the reset output using an external capacitor.
- How does the NCP303LSN26T1G prevent erratic system reset operation?
The combination of a highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator prevents erratic system reset operation.
