Overview
The NCP803SN293T3G is a microprocessor reset supervisory circuit produced by onsemi. This device is part of the NCP803 series, designed to monitor the power supply in digital systems and provide a reset signal to the host processor when necessary. It is a cost-effective, 3-pin system supervisor that requires no external components for operation. The NCP803SN293T3G is optimized for low supply current and high transient immunity, making it suitable for battery-powered applications 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 Threshold Voltage (VTH) | - | 2.93 | - | V |
| Reset Active TimeOut Period | 140 | - | 460 | ms |
| RESET Output Voltage Low (VCC = VTH - 0.2 V, ISINK = 0.5 mA) | - | 0.3 | - | V |
| Operating Temperature | -40 | - | 105 | °C |
| Package Type | - | - | SOT-23 | - |
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 for operation.
- Open-drain active-low RESET output.
- Four guaranteed minimum power-on reset pulse widths available (1 ms, 20 ms, 100 ms, and 140 ms).
- High transient immunity to reject fast transient glitches on the VCC line.
- 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.
- Systems requiring reliable power supply monitoring and reset functionality.
Q & A
- What is the primary function of the NCP803SN293T3G?
The primary function is to monitor the power supply in digital systems and provide a reset signal to the host processor when necessary.
- What is the typical supply current of the NCP803SN293T3G?
The typical supply current is 0.5 μA at VCC = 3.2 V.
- What are the available reset threshold voltages for the NCP803 series?
The reset threshold voltages are available from 1.2 V to 4.9 V in 100 mV steps.
- What is the reset active timeout period for the NCP803SN293T3G?
The reset active timeout period is between 140 ms and 460 ms.
- Does the NCP803SN293T3G require external components for operation?
No, it does not require any external components for operation.
- What is the operating temperature range of the NCP803SN293T3G?
The operating temperature range is from -40°C to 105°C.
- Is the NCP803SN293T3G Pb-free and RoHS compliant?
- How does the NCP803SN293T3G handle transient glitches on the power supply line?
- What types of applications is the NCP803SN293T3G suitable for?
- What package type is the NCP803SN293T3G available in?
