Overview
The NCP303LSN46T1G is a second-generation ultra-low current voltage detector from onsemi, designed for use as a reset controller in portable microprocessor-based systems where extended battery life is crucial. This device 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 | 4.510 | 4.600 | 4.690 |
| Detector Threshold Hysteresis (Pin 2, Vin Increasing) | V | 0.135 | 0.225 | 0.315 |
| Quiescent Current | μA | 0.25 | 0.50 | 1.3 |
| Output Voltage (Pin 1) | V | -0.3 | - | Vin + 0.3 |
| 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
- Highly accurate undervoltage detector with hysteresis
- Externally programmable time delay generator
- Ultra-low quiescent current of 0.5 μA typical
- Wide operating voltage range of 0.8 V to 10 V
- Open drain N-Channel output with active low reset
- Specified over the -40°C to +125°C temperature range
Applications
The NCP303LSN46T1G 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.
Q & A
- What is the primary function of the NCP303LSN46T1G?
The primary function is to act as a reset controller in microprocessor-based systems, ensuring reliable system reset operations. - What is the typical quiescent current of the NCP303LSN46T1G?
The typical quiescent current is 0.5 μA. - What is the operating voltage range of the NCP303LSN46T1G?
The operating voltage range is from 0.8 V to 10 V. - How is the time delay programmable in the NCP303LSN46T1G?
The time delay is programmable using an external capacitor connected to the delay capacitor pin. - What type of output does the NCP303LSN46T1G have?
The output is an open drain N-Channel with an active low reset. - What is the temperature range for the NCP303LSN46T1G?
The device is specified over the -40°C to +125°C temperature range. - What is the detector threshold hysteresis for the NCP303LSN46T1G?
The detector threshold hysteresis is between 0.135 V and 0.315 V. - How does the NCP303LSN46T1G prevent erratic system reset operations?
It prevents erratic system reset operations through its highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator. - What are some typical applications for the NCP303LSN46T1G?
Typical applications include handheld devices, battery-powered equipment, and other portable microprocessor-based systems. - What is the maximum output current for the active low reset output?
The maximum output current for the active low reset output is up to 2.0 mA.
