Overview
The NCP303LSN45T1G is a second-generation ultra-low current voltage detector from onsemi, designed for use in 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 NCP303 series includes an open-drain N-Channel output with an active low reset output, making it suitable for a variety of applications requiring precise voltage monitoring.
Key Specifications
| Characteristic | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Input Power Supply Voltage (Pin 2) | V | 0.8 | - | 10 |
| Quiescent Current (Vin = 4.5 V) | μA | 0.33 | 0.52 | 1.0 |
| Detector Threshold (Vin Decreasing, TA = 25°C) | V | 4.410 | 4.500 | 4.590 |
| Detector Threshold Hysteresis | V | 0.135 | 0.225 | 0.315 |
| Reset Output Current (Active Low, VOUT = 0.05 V, Vin = 0.70 V) | mA | 0.01 | 1.0 | 2.0 |
| Delay Capacitor Pin Sink Current (Vin = 1.5 V, VCD = 0.5 V) | μA | 200 | 250 | 3600 |
| Operating Ambient Temperature Range | °C | -40 | - | 125 |
| Storage Temperature Range | °C | -55 | - | 150 |
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
- 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 NCP303LSN45T1G? The primary function is to act as a voltage detector with a programmable time delay generator for microprocessor-based systems.
- What is the typical quiescent current of the NCP303LSN45T1G? The typical quiescent current is 0.5 μA.
- What is the operating voltage range of the NCP303LSN45T1G? The operating voltage range is from 0.8 V to 10 V.
- What type of output does the NCP303LSN45T1G have? The NCP303LSN45T1G has an open-drain N-Channel output with an active low reset.
- What is the temperature range for the NCP303LSN45T1G? The device is specified over the -40°C to +125°C temperature range.
- Is the NCP303LSN45T1G suitable for automotive applications? Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other critical applications.
- Is the NCP303LSN45T1G Pb-free and RoHS compliant? Yes, the device is Pb-free and RoHS compliant.
- What are some typical applications of the NCP303LSN45T1G? Typical applications include microprocessor reset controllers, low battery detection, power fail indicators, and battery backup detection.
- How does the programmable time delay generator work? The time delay is programmable using an external capacitor connected to the CD pin, allowing for customizable delay times.
- What is the detector threshold hysteresis for the NCP303LSN45T1G? The detector threshold hysteresis is between 0.135 V and 0.315 V.
