Overview
The NCP303LSN25T1G 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 NCP303LSN25T1G 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 |
| Minimum Operating Voltage (Vin(min)) | V | 0.70 | 0.65 | 0.80 |
| Maximum Operating Voltage (Vin(max)) | V | - | - | 10 |
| Reset Output Current (IOUT) - Active Low | mA | 1.0 | 0.01 | 2.0 |
| Delay Capacitor Pin Threshold Voltage (VTCD) | V | 2.23 | 1.65 | 2.81 |
| Operating Ambient Temperature Range | °C | - | -40 | 125 |
Key Features
- Ultra-low current consumption of 0.5 μA typical, ensuring extended battery life in portable systems.
- Highly accurate undervoltage detector with hysteresis to prevent erratic system reset operations.
- Externally programmable time delay generator to customize the reset timing according to system requirements.
- Wide operating voltage range of 0.8 V to 10 V, making it versatile for various applications.
- Open drain N-Channel output with an active low reset output for the NCP303 series.
- Complementary output configuration available for NCP302 series with active high or active low reset options.
- Specified over the −40°C to +125°C temperature range, ensuring reliability in diverse environmental conditions.
Applications
- Portable microprocessor-based systems where low power consumption is critical.
- Battery-powered devices requiring reliable reset functionality.
- Automotive and industrial systems needing robust voltage monitoring and reset capabilities.
- Embedded systems and IoT devices that demand precise voltage detection and programmable delay.
Q & A
- What is the primary function of the NCP303LSN25T1G?
The primary function of the NCP303LSN25T1G is to act as a reset controller in microprocessor-based systems, providing undervoltage detection and programmable time delay.
- What is the typical supply current of the NCP303LSN25T1G?
The typical supply current of the NCP303LSN25T1G is 0.25 μA.
- What is the operating voltage range of the NCP303LSN25T1G?
The operating voltage range of the NCP303LSN25T1G is from 0.8 V to 10 V.
- How is the time delay programmable in the NCP303LSN25T1G?
The time delay in the NCP303LSN25T1G is programmable using an external capacitor connected to the delay pin.
- What type of output does the NCP303LSN25T1G have?
The NCP303LSN25T1G has an open drain N-Channel output with an active low reset output.
- What is the temperature range for the NCP303LSN25T1G?
The NCP303LSN25T1G is specified to operate over the −40°C to +125°C temperature range.
- What is the detector threshold hysteresis for the NCP303LSN25T1G?
The detector threshold hysteresis for the NCP303LSN25T1G is typically 0.075 V.
- Can the NCP303LSN25T1G be used in automotive applications?
Yes, the NCP303 series, including the NCP303LSN25T1G, can be used in automotive and other applications requiring unique site and control change requirements.
- How does the NCP303LSN25T1G prevent erratic system reset operations?
The NCP303LSN25T1G prevents erratic system reset operations through its highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator.
- What is the maximum output current for the NCP303LSN25T1G?
The maximum output current for the NCP303LSN25T1G is 2.0 mA for active low reset output.
