Overview
The NCP302HSN45T1G is a supervisory circuit produced by ON Semiconductor, designed for use as a reset controller in portable microprocessor-based systems where extended battery life is crucial. This device is part of the NCP302 series, which features second-generation ultra-low current voltage detectors with programmable time delay generators. The NCP302HSN45T1G is specifically configured with a 4.5V detector threshold and offers both active high and active low reset outputs, making it versatile for various system requirements.
Key Specifications
| Characteristic | Unit | Typical | Minimum | Maximum |
|---|---|---|---|---|
| Input Power Supply Voltage (Vin) | V | - | 0.8 | 10 |
| Output Voltage (Vout) | V | - | -0.3 | Vin + 0.3 |
| Output Current (Iout) | mA | - | - | 70 |
| Quiescent Current (Iin) | μA | 0.5 | - | 1.4 |
| Detector Threshold (Vdet) | V | 4.365 | 4.365 | 4.590 |
| Detector Threshold Hysteresis (Vhys) | V | 0.225 | 0.135 | 0.315 |
| Operating Ambient Temperature Range | °C | - | -40 | 125 |
| Storage Temperature Range | °C | - | -55 | 150 |
Key Features
- Ultra-low quiescent current of 0.5 μA typical, ensuring extended battery life in portable systems.
- High accuracy undervoltage detector with a threshold of 4.5V and hysteresis to prevent erratic system reset operations.
- Externally programmable time delay generator to customize the reset timing according to system requirements.
- Complementary output configuration available with either active high or active low reset outputs.
- Wide operating voltage range from 0.8 V to 10 V, making it suitable for various power supply conditions.
- Specified over a temperature range of -40°C to +125°C, ensuring reliability in diverse environmental conditions.
- PbFree and RoHS compliant, meeting environmental and regulatory standards.
Applications
- Microprocessor Reset Controller: Ensures proper system reset in microprocessor-based systems.
- Low Battery Detection: Monitors battery voltage levels to prevent system malfunction due to low battery conditions.
- Power Fail Indicator: Detects power failures and initiates appropriate system responses.
- Battery Backup Detection: Monitors the status of battery backup systems to ensure continuous operation.
Q & A
- What is the primary function of the NCP302HSN45T1G?
The NCP302HSN45T1G is primarily used as a reset controller in portable microprocessor-based systems to ensure proper system reset and prevent erratic operations due to undervoltage conditions.
- What is the typical quiescent current of the NCP302HSN45T1G?
The typical quiescent current is 0.5 μA, which is ultra-low and helps in extending battery life in portable systems.
- What is the detector threshold voltage for the NCP302HSN45T1G?
The detector threshold voltage is 4.5V with a hysteresis to prevent erratic system reset operations.
- Can the time delay for the reset be customized?
- What are the available output configurations for the NCP302HSN45T1G?
The device is available with either active high or active low reset outputs, providing flexibility in system design.
- What is the operating temperature range for the NCP302HSN45T1G?
The device operates over a temperature range of -40°C to +125°C.
- Is the NCP302HSN45T1G PbFree and RoHS compliant?
- What are some common applications of the NCP302HSN45T1G?
- What is the maximum output current of the NCP302HSN45T1G?
The maximum output current is 70 mA.
- What is the storage temperature range for the NCP302HSN45T1G?
The storage temperature range is -55°C to +150°C.
