Overview
The NCP803SN232T1G is a cost-effective system supervisor circuit designed by ON Semiconductor. This 3-pin microprocessor reset monitor is part of the NCP803 series, which is optimized for monitoring VCC in digital systems and providing a reset signal to the host processor when necessary. The device is known for its low supply current, precision voltage monitoring, and wide operating temperature range, making it suitable for various applications including computers, embedded systems, and battery-powered equipment.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Range | - | 1.2 | - | 5.5 | V |
| Supply Current (VCC = 3.3 V) | ICC | - | 0.5 | 1.2 | μA |
| Reset Threshold (Vin Decreasing) | - | 2.26 | 2.29 | 2.32 | V |
| Reset Active TimeOut Period | tRP | 1 | 20 | 100/140 | ms |
| Operating Temperature | - | -40 | - | 105 | °C |
| Package Type | - | - | - | SOT-23 | - |
Key Features
- Precision VCC monitoring from 1.2 V to 4.9 V in 100 mV steps
- Four guaranteed minimum power-on reset pulse widths (1 ms, 20 ms, 100 ms, and 140 ms)
- RESET output guaranteed to VCC = 1.0 V
- Low supply current of 0.5 μA (VCC = 3.3 V)
- VCC transient immunity to reject fast transient glitches
- No external components required
- Wide operating temperature range: -40°C to 105°C
- Pb-free packages available and RoHS compliant
Applications
- Computers
- Embedded Systems
- Battery Powered Equipment
- Critical Microprocessor Power Supply Monitoring
Q & A
- What is the primary function of the NCP803SN232T1G? The primary function is to monitor VCC in digital systems and provide a reset signal to the host processor when necessary.
- What are the available reset pulse widths for the NCP803SN232T1G? The available reset pulse widths are 1 ms, 20 ms, 100 ms, and 140 ms.
- What is the typical supply current of the NCP803SN232T1G at VCC = 3.3 V? The typical supply current is 0.5 μA.
- What is the operating temperature range of the NCP803SN232T1G? The operating temperature range is -40°C to 105°C.
- Does the NCP803SN232T1G require external components? No, it does not require any external components.
- What type of package is the NCP803SN232T1G available in? It is available in SOT-23 packages.
- Is the NCP803SN232T1G Pb-free and RoHS compliant? Yes, it is Pb-free and RoHS compliant.
- What are some typical applications for the NCP803SN232T1G? Typical applications include computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
- How does the NCP803SN232T1G handle VCC transients? It is designed to reject fast transient glitches on the VCC line.
- What is the reset threshold voltage for the NCP803SN232T1G? The reset threshold voltage is approximately 2.29 V.
