Overview
The NCP302LSN20T1G is a part of the NCP302 series, which are second-generation ultra-low current voltage detectors produced by onsemi. These devices are designed for use as reset controllers in portable microprocessor-based systems where extended battery life is crucial. The NCP302LSN20T1G features a highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator, preventing erratic system reset operations.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Detector Threshold (Vin Decreasing) | VDET− | 1.960 | 2.0 | 2.040 | V |
| Detector Threshold Hysteresis | VHYS | 0.060 | 0.100 | 0.140 | V |
| Supply Current | Iin | 0.23 | 0.48 | 0.7 | μA |
| Maximum Operating Voltage | Vin(max) | 10 | V | ||
| Minimum Operating Voltage | Vin(min) | 0.55 | 0.65 | 0.70 | V |
| Reset Output Current (Active Low) | IOUT | 0.01 | 1.0 | 2.0 | mA |
| Operating Ambient Temperature Range | TA | −40 | 125 | °C | |
| Storage Temperature Range | Tstg | −55 | 150 | °C |
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 from 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
- ESD protection exceeding Human Body Model 2000 V and Machine Model 200 V
Applications
The NCP302LSN20T1G 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. It is also suitable for automotive and industrial applications requiring robust voltage monitoring and reset control.
Q & A
- What is the primary function of the NCP302LSN20T1G?
The primary function of the NCP302LSN20T1G is to act as a reset controller in microprocessor-based systems, ensuring reliable system operation by monitoring the voltage and generating a reset signal if the voltage falls below a specified threshold.
- What is the typical quiescent current of the NCP302LSN20T1G?
The typical quiescent current of the NCP302LSN20T1G is 0.5 μA.
- What is the operating voltage range of the NCP302LSN20T1G?
The operating voltage range of the NCP302LSN20T1G is from 0.8 V to 10 V.
- How is the time delay for the reset signal programmed in the NCP302LSN20T1G?
The time delay for the reset signal in the NCP302LSN20T1G is externally programmable using a capacitor connected to the delay pin.
- What types of output configurations are available for the NCP302LSN20T1G?
The NCP302LSN20T1G is available with complementary output configurations (active high or active low) and open drain N-Channel output with an active low reset.
- What is the temperature range over which the NCP302LSN20T1G is specified?
The NCP302LSN20T1G is specified over the −40°C to +125°C temperature range.
- Does the NCP302LSN20T1G have ESD protection?
Yes, the NCP302LSN20T1G has ESD protection exceeding Human Body Model 2000 V and Machine Model 200 V.
- What are some typical applications for the NCP302LSN20T1G?
The NCP302LSN20T1G is typically used in portable microprocessor-based systems, handheld devices, battery-powered equipment, and in automotive and industrial applications.
- How does the NCP302LSN20T1G prevent erratic system reset operations?
The NCP302LSN20T1G prevents erratic system reset operations through its highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator.
- What is the detector threshold hysteresis for the NCP302LSN20T1G?
The detector threshold hysteresis for the NCP302LSN20T1G is between 0.060 V and 0.140 V.
- What is the maximum reset output current for the NCP302LSN20T1G?
The maximum reset output current for the NCP302LSN20T1G is 2.0 mA for active low devices.
