Overview
The NCP302HSN27T1G is a second-generation ultra-low current voltage detector from onsemi, designed for use as a reset controller in portable 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, preventing erratic system reset operations.
Key Specifications
| Characteristic | Unit | Typical | Minimum | Maximum |
|---|---|---|---|---|
| Detector Threshold (VDET-) | V | 2.7 | 2.64 | 2.70 |
| Detector Threshold Hysteresis (VHYS) | V | 0.135 | 0.081 | 0.189 |
| Supply Current (Iin) | μA | 0.25 | 0.23 | 1.3 |
| Quiescent Current | μA | 0.5 | - | - |
| Operating Voltage Range (Vin) | V | - | 0.8 | 10 |
| Reset Output Current (IOUT) - Active Low | mA | - | 0.01 | 3.5 |
| Reset Output Current (IOUT) - Active High | mA | - | 6.3 | 11 |
| Delay Capacitor Pin Threshold Voltage (VTCD) | V | 1.49 | 1.10 | 1.87 |
| Delay Capacitor Pin Sink Current (ICD) | μA | - | 2.0 | 3600 |
| Operating Ambient Temperature Range (TA) | °C | - | -40 | 125 |
Key Features
- Highly accurate undervoltage detector with hysteresis.
- Externally programmable time delay generator.
- Ultra-low quiescent current of 0.5 μA typical.
- 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.
Applications
The NCP302HSN27T1G 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.
Q & A
- What is the primary function of the NCP302HSN27T1G?
The primary function is to act as a reset controller in microprocessor-based systems, ensuring reliable system reset operations.
- What is the typical quiescent current of the NCP302HSN27T1G?
The typical quiescent current is 0.5 μA.
- What is the operating voltage range of the NCP302HSN27T1G?
The operating voltage range is from 0.8 V to 10 V.
- What types of output configurations are available for the NCP302HSN27T1G?
The device is available with complementary or open drain output configurations.
- Can the time delay be programmed externally?
- What is the temperature range over which the device is specified?
The device is specified over the -40°C to +125°C temperature range.
- What is the detector threshold hysteresis for the NCP302HSN27T1G?
The detector threshold hysteresis (VHYS) is typically 0.135 V.
- How does the reset output current vary for active low and active high configurations?
For active low configurations, the reset output current ranges from 0.01 mA to 3.5 mA, while for active high configurations, it ranges from 6.3 mA to 11 mA.
- What is the maximum junction temperature for the NCP302HSN27T1G?
The maximum junction temperature is +150°C.
- What are some typical applications for the NCP302HSN27T1G?
Typical applications include handheld devices, battery-powered equipment, and other portable microprocessor-based systems.
