Overview
The NCP302LSN45T1G is a second-generation ultra-low current voltage detector from onsemi, designed for use 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, which prevents erratic system reset operations.
The NCP302 series, including the NCP302LSN45T1G, offers complementary output devices available with either active high or active low reset outputs. This specific model is part of the NCP302 series with an active low reset output.
Key Specifications
| Characteristic | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Input Power Supply Voltage (Pin 2) | V | 0.8 | - | 10 |
| Quiescent Current (Vin = 4.34 V) | μA | 0.33 | 0.52 | 1.0 |
| Detector Threshold (Pin 2, Vin Decreasing) at 25°C | V | 4.365 | 4.410 | 4.500 |
| Detector Threshold Hysteresis (Pin 2, Vin Increasing) | V | 0.135 | 0.225 | 0.315 |
| Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices) | 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
- Complementary or open drain output configurations
- Active low or active high reset options
- Specified over the -40°C to +125°C temperature range
- AEC-Q100 qualified and PPAP capable for automotive and other critical applications
- Pb-free and RoHS compliant
Applications
- Microprocessor reset controller
- Low battery detection
- Power fail indicator
- Battery backup detection
Q & A
- What is the primary function of the NCP302LSN45T1G?
The primary function of the NCP302LSN45T1G is to act as a voltage detector and reset controller in microprocessor-based systems, ensuring accurate and reliable system reset operations.
- What is the quiescent current of the NCP302LSN45T1G?
The quiescent current of the NCP302LSN45T1G is typically 0.5 μA.
- What is the operating voltage range of the NCP302LSN45T1G?
The operating voltage range of the NCP302LSN45T1G is from 0.8 V to 10 V.
- What types of output configurations are available for the NCP302 series?
The NCP302 series offers both complementary and open drain output configurations.
- What is the temperature range for the NCP302LSN45T1G?
The NCP302LSN45T1G is specified to operate over a temperature range of -40°C to +125°C.
- Is the NCP302LSN45T1G suitable for automotive applications?
- What is the detector threshold hysteresis for the NCP302LSN45T1G?
The detector threshold hysteresis for the NCP302LSN45T1G is between 0.135 V and 0.315 V.
- How is the time delay programmed in the NCP302LSN45T1G?
The time delay in the NCP302LSN45T1G is externally programmable using a capacitor connected to the delay pin.
- Is the NCP302LSN45T1G Pb-free and RoHS compliant?
- What are some typical applications for the NCP302LSN45T1G?
