Overview
The NCP803SN463T1G is a microprocessor reset supervisory circuit designed and manufactured by onsemi. This device is part of the NCP803 series, which is optimized for monitoring power supplies in digital systems and providing 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 NCP803SN463T1G is particularly suited for applications requiring low supply current and high precision in voltage monitoring.
Key Specifications
| Parameter | 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) | - | 4.63 | - | V |
| Reset Active TimeOut Period | 140 | - | 460 | ms |
| VCC to Reset Delay | - | 10 | - | μs |
| Operating Junction Temperature Range | -40 | - | 105 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
| Lead Temperature (Soldering, 10 Seconds) | - | - | 260 | °C |
| Package Type | - | - | SOT-23, SC-70 | - |
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: 1 ms, 20 ms, 100 ms, and 140 ms.
- VCC transient immunity to reject fast transient glitches on the power supply 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 precise voltage monitoring and reset functionality during power-up, power-down, and brownout/sag conditions.
Q & A
- What is the primary function of the NCP803SN463T1G? The primary function is to monitor the power supply voltage (VCC) in digital systems and provide a reset signal to the host processor when the voltage falls below a specified threshold.
- What are the available reset timeout periods for the NCP803SN463T1G? The device offers reset timeout periods of 1 ms, 20 ms, 100 ms, and 140 ms.
- What is the typical supply current of the NCP803SN463T1G at 3.3 V? The typical supply current is 0.5 μA.
- What is the operating temperature range of the NCP803SN463T1G? The operating temperature range is -40°C to 105°C.
- Is the NCP803SN463T1G Pb-free and RoHS compliant? Yes, it is Pb-free and RoHS compliant.
- What types of packages are available for the NCP803SN463T1G? The device is available in SOT-23 and SC-70 packages.
- How does the NCP803SN463T1G handle transient glitches on the VCC line? The device has built-in VCC transient immunity to reject fast transient glitches on the power supply line.
- What is the reset voltage threshold for the NCP803SN463T1G? The reset voltage threshold (VTH) is 4.63 V.
- Does the NCP803SN463T1G require any external components for operation? No, it does not require any external components.
- What is the maximum lead temperature for soldering the NCP803SN463T1G? The maximum lead temperature for soldering is 260°C for 10 seconds.
