Overview
The NCP303LSN29T1G is a second-generation ultra-low current voltage detector from onsemi, designed for use as a reset controller in portable microprocessor-based systems. This device is part of the NCP303 series, which features an open-drain N-Channel output with an active low reset output. It is optimized for applications where extended battery life is crucial.
Key Specifications
| Characteristic | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Input Power Supply Voltage (Pin 2) | V | 0.80 | - | 10 |
| Minimum Operating Voltage (Pin 2) at TA = 25°C | V | 0.70 | - | - |
| Minimum Operating Voltage (Pin 2) at TA = -40°C to 125°C | V | 0.80 | - | - |
| Detector Threshold (Pin 2, Vin Decreasing) at TA = 25°C | V | 2.842 | 2.9 | 2.958 |
| Detector Threshold Hysteresis (Pin 2, Vin Increasing) | V | 0.087 | 0.145 | 0.203 |
| Quiescent Current (Vin = 2.9 V) | μA | 0.25 | 0.50 | 0.80 |
| Output Voltage (Pin 1) - Open Drain | V | -0.3 | - | Vin + 0.3 |
| Output Current (Pin 1) - Nch Sink Current | mA | 0.01 | 1.0 | 2.0 |
| Delay Capacitor Pin Threshold Voltage (Pin 5) | V | 1.65 | 2.23 | 2.81 |
| Delay Pullup Resistance (Pin 5) | MΩ | 0.5 | 1.0 | 2.0 |
| Operating Ambient Temperature Range | °C | -40 | - | 125 |
Key Features
- Ultra-low quiescent current of 0.5 μA typical, ensuring extended battery life.
- High accuracy undervoltage threshold with a tolerance of ±2.0%.
- Externally programmable time delay generator to prevent erratic system reset operations.
- Wide operating voltage range from 0.8 V to 10 V.
- Open-drain N-Channel output with an active low reset output.
- Complementary output configuration available in other models of the series.
- Specified over the -40°C to +125°C temperature range.
- NCV prefix available for automotive and other applications requiring unique site and control change requirements.
Applications
- Portable microprocessor-based systems where extended battery life is critical.
- Automotive systems requiring robust voltage detection and reset capabilities.
- Industrial control systems needing reliable undervoltage detection.
- Consumer electronics such as handheld devices, smartphones, and tablets.
- Medical devices requiring precise voltage monitoring and reset functions.
Q & A
- What is the primary function of the NCP303LSN29T1G?
The primary function of the NCP303LSN29T1G is to act as a reset controller in microprocessor-based systems, providing undervoltage detection and a programmable time delay.
- What is the quiescent current of the NCP303LSN29T1G?
The quiescent current of the NCP303LSN29T1G is typically 0.5 μA.
- What is the operating voltage range of the NCP303LSN29T1G?
The operating voltage range of the NCP303LSN29T1G is from 0.8 V to 10 V.
- How is the time delay in the NCP303LSN29T1G programmed?
The time delay in the NCP303LSN29T1G is externally programmable using a capacitor connected to the delay pin.
- What type of output does the NCP303LSN29T1G have?
The NCP303LSN29T1G has an open-drain N-Channel output with an active low reset output.
- What is the temperature range over which the NCP303LSN29T1G is specified?
The NCP303LSN29T1G is specified over the -40°C to +125°C temperature range.
- What are some common applications for the NCP303LSN29T1G?
Common applications include portable microprocessor-based systems, automotive systems, industrial control systems, consumer electronics, and medical devices.
- How accurate is the undervoltage threshold of the NCP303LSN29T1G?
The undervoltage threshold of the NCP303LSN29T1G has a high accuracy with a tolerance of ±2.0%.
- What is the maximum output current of the NCP303LSN29T1G?
The maximum output current of the NCP303LSN29T1G is up to 2.0 mA for Nch sink current.
- Does the NCP303LSN29T1G have any special prefixes for specific applications?
Yes, the NCP303LSN29T1G can have an NCV prefix for automotive and other applications requiring unique site and control change requirements.
