Overview
The NCP303LSN31T1G 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 | 0.55 | - | 10 |
| Detector Threshold (Pin 2, Vin Decreasing) | V | 3.038 | 3.1 | 3.162 |
| Detector Threshold Hysteresis (Pin 2, Vin Increasing) | V | 0.093 | 0.155 | 0.217 |
| Supply Current (Pin 2) | μA | 0.25 | 0.50 | 1.0 |
| 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 | 1.49 | 2.01 | 2.53 |
Key Features
- Ultra-low quiescent current of 0.5 μA typical
- High accuracy undervoltage threshold with 2.0% tolerance
- Externally programmable time delay generator
- 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
- Complementary output configuration available in other models of the series
Applications
The NCP303LSN31T1G 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 NCP303LSN31T1G? The primary function is to act as a reset controller in microprocessor-based systems.
- What is the typical quiescent current of the NCP303LSN31T1G? The typical quiescent current is 0.5 μA.
- What is the operating voltage range of the NCP303LSN31T1G? The operating voltage range is from 0.8 V to 10 V.
- How is the time delay in the NCP303LSN31T1G programmed? The time delay is externally programmable using a capacitor.
- What type of output does the NCP303LSN31T1G have? The output is an open drain N-Channel with an active low reset.
- What is the temperature range for the NCP303LSN31T1G? The device is specified over the -40°C to +125°C temperature range.
- What is the detector threshold hysteresis for the NCP303LSN31T1G? The detector threshold hysteresis is between 0.093 V and 0.217 V.
- How does the NCP303LSN31T1G 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 NCP303LSN31T1G? Typical applications include handheld devices and other battery-powered equipment.
- What is the maximum junction temperature for the NCP303LSN31T1G? The maximum junction temperature is +150°C.
