Overview
The NCP303LSN20T1G is a second-generation ultra-low current voltage detector produced by onsemi. This device is specifically designed for use as a reset controller in portable microprocessor-based systems where extended battery life is crucial. It features a highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator, which helps prevent erratic system reset operations.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Detector Threshold (Vin Decreasing) | VDET− | 1.94 | 2.00 | 2.06 | V |
| Detector Threshold Hysteresis | VHYS | 0.135 | 0.225 | 0.315 | V |
| Quiescent Current | Iin | 0.33 | 0.52 | 1.0 | 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, ensuring extended battery life in portable systems.
- Highly accurate undervoltage detector with hysteresis to prevent erratic system reset operations.
- Externally programmable time delay generator for customizable reset timing.
- Open drain N-Channel output with active low reset output (for NCP303 series).
- Wide operating voltage range of 0.8 V to 10 V.
- Specified over the -40°C to +125°C temperature range.
- ESD protection exceeding Human Body Model 2000 V per MIL-STD-883, Method 3015.
Applications
- Portable microprocessor-based systems where extended battery life is critical.
- Reset controllers in handheld devices, such as smartphones and tablets.
- Automotive and industrial systems requiring precise voltage monitoring and reset control.
- Battery-powered devices, including wearables and IoT devices.
Q & A
- What is the primary function of the NCP303LSN20T1G?
The primary function is to act as a reset controller with an undervoltage detector and programmable time delay generator in microprocessor-based systems.
- What is the typical quiescent current of the NCP303LSN20T1G?
The typical quiescent current is 0.5 μA.
- What is the operating voltage range of the NCP303LSN20T1G?
The operating voltage range is from 0.8 V to 10 V.
- What type of output does the NCP303 series have?
The NCP303 series has an open drain N-Channel output with an active low reset output.
- Is the NCP303LSN20T1G ESD protected?
- What is the temperature range for the NCP303LSN20T1G?
The operating ambient temperature range is -40°C to +125°C, and the storage temperature range is -55°C to +150°C.
- Can the time delay be programmed externally?
- What are some common applications for the NCP303LSN20T1G?
- Is the NCP303LSN20T1G still in production?
- Where can I find substitutes for the NCP303LSN20T1G?
