Overview
The NCP303LSN30T1G 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 |
|---|---|---|---|---|
| Detector Threshold (VDET−) | V | 2.940 | 3.0 | 3.060 |
| Detector Threshold Hysteresis (VHYS) | V | 0.090 | 0.150 | 0.210 |
| Supply Current (Iin) | μA | 0.25 | 0.50 | 0.8 |
| Minimum Operating Voltage (Vin(min)) | V | 0.70 | - | - |
| Maximum Operating Voltage (Vin(max)) | V | - | - | 10 |
| Reset Output Current (IOUT), Active Low | mA | 0.01 | 1.0 | 2.0 |
| Operating Ambient Temperature Range | °C | -40 | - | 125 |
| Delay Capacitor Pin Threshold Voltage (VTCD) | V | 1.49 | 2.01 | 2.53 |
| Delay Capacitor Pin Sink Current (ICD) | μA | 2.0 | 200 | 3600 |
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
- Compliant with automotive and other applications requiring unique site and control change requirements (NCV prefix available)
Applications
- Portable microprocessor-based systems
- Battery-powered devices requiring extended battery life
- Automotive systems needing robust voltage monitoring
- Industrial and consumer electronics requiring reliable reset control
Q & A
- What is the primary function of the NCP303LSN30T1G?
The primary function of the NCP303LSN30T1G is to act as a reset controller in microprocessor-based systems, ensuring reliable operation by monitoring the voltage and generating a reset signal if the voltage drops below a specified threshold.
- What is the typical quiescent current of the NCP303LSN30T1G?
The typical quiescent current of the NCP303LSN30T1G is 0.5 μA.
- What is the operating voltage range of the NCP303LSN30T1G?
The operating voltage range of the NCP303LSN30T1G is from 0.8 V to 10 V.
- How is the time delay in the NCP303LSN30T1G programmed?
The time delay in the NCP303LSN30T1G is externally programmable using a capacitor connected to the delay pin.
- What type of output does the NCP303LSN30T1G have?
The NCP303LSN30T1G has an open drain N-Channel output with an active low reset.
- What is the temperature range over which the NCP303LSN30T1G is specified?
The NCP303LSN30T1G is specified over the -40°C to +125°C temperature range.
- Can the NCP303LSN30T1G be used in automotive applications?
- What is the detector threshold hysteresis of the NCP303LSN30T1G?
The detector threshold hysteresis (VHYS) of the NCP303LSN30T1G is between 0.090 V and 0.210 V.
- How does the NCP303LSN30T1G prevent erratic system reset operations?
The NCP303LSN30T1G prevents erratic system reset operations through its highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator.
- What is the maximum operating voltage of the NCP303LSN30T1G?
The maximum operating voltage of the NCP303LSN30T1G is 10 V.
- What is the minimum operating voltage of the NCP303LSN30T1G at 25°C?
The minimum operating voltage of the NCP303LSN30T1G at 25°C is 0.70 V.
