Overview
The NCP803SN293D3T1G is a cost-effective system supervisor circuit designed by onsemi. This 3-pin microprocessor reset monitor is optimized to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary. It is part of the NCP803 series, known for its low supply current and precision VCC monitoring capabilities. The device is available in SOT-23 packages and is Pb-free and RoHS compliant, making it suitable for a wide range of applications, including battery-powered equipment and critical microprocessor power supply monitoring.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Range | 1.0 | - | 5.5 | V |
| Supply Current (VCC = 3.3 V) | - | 0.5 | 1.2 | μA |
| Reset Voltage Threshold (VTH) | - | 2.93 | - | V |
| Reset Active TimeOut Period | 100 | - | 330 | ms |
| Operating Junction Temperature Range | -40 | - | 105 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
| Lead Temperature (Soldering, 10 Seconds) | - | - | 260 | °C |
Key Features
- Precision VCC monitoring for supplies from 1.5 V to 5.0 V, with options available in 100 mV steps from 1.2 V to 4.9 V.
- Low supply current of 0.5 μA (VCC = 3.2 V), making it suitable for battery-powered applications.
- No external components required.
- Open-drain active-low RESET output.
- VCC transient immunity to reject fast transient glitches on the power supply line.
- Four guaranteed minimum power-on reset pulse widths available (1 ms, 20 ms, 100 ms, and 140 ms).
- Wide operating temperature range: -40°C to 105°C.
- Pb-free and RoHS compliant.
Applications
- Computers and embedded systems.
- Battery-powered equipment.
- Critical microprocessor power supply monitoring.
Q & A
- What is the primary function of the NCP803SN293D3T1G?
The primary function is to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary.
- What are the available reset voltage thresholds for this device?
The device offers precision monitoring voltages from 1.2 V to 4.9 V in 100 mV steps, with the specific model NCP803SN293D3T1G having a threshold of 2.93 V.
- What is the typical supply current of the NCP803SN293D3T1G?
The typical supply current is 0.5 μA at VCC = 3.2 V.
- Does the NCP803SN293D3T1G require external components?
No, the device does not require any external components.
- What is the nature of the RESET output of the NCP803SN293D3T1G?
The RESET output is an open-drain active-low output.
- How does the device handle VCC transients?
The device has built-in VCC transient immunity to reject fast transient glitches on the power supply line.
- What are the available reset pulse widths for this device?
The device offers four guaranteed minimum power-on reset pulse widths: 1 ms, 20 ms, 100 ms, and 140 ms.
- What is the operating temperature range of the NCP803SN293D3T1G?
The operating temperature range is -40°C to 105°C.
- Is the NCP803SN293D3T1G Pb-free and RoHS compliant?
- What types of applications is the NCP803SN293D3T1G suitable for?
The device is suitable for computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
