Overview
The NCP803SN160T1G is a system supervisor circuit designed by onsemi, optimized for monitoring the power supply voltage (VCC) in digital systems and providing a reset signal to the host processor when necessary. This device is part of the NCP803 series, known for its low supply current and precision VCC monitoring capabilities, making it suitable for battery-powered applications and other power-sensitive designs.
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) | 1.58 | 1.60 | 1.62 | V |
| Reset Active TimeOut Period | 140 | - | 460 | ms |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
| Lead Temperature (Soldering, 10 Seconds) | - | - | 260 | °C |
| Package Type | - | - | SOT-23 | - |
Key Features
- Precision VCC Monitor for 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies
- Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps
- Four Guaranteed Minimum Power-On Reset Pulse Width Available (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 = 3.2 V)
- VCC Transient Immunity
- No External Components Required
- Wide Operating Temperature: -40°C to 105°C
- Pb-Free and RoHS Compliant
Applications
- Computers
- Embedded Systems
- Battery Powered Equipment
- Critical Microprocessor Power Supply Monitoring
Q & A
- What is the primary function of the NCP803SN160T1G?
The primary function of the NCP803SN160T1G 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 is the typical supply current of the NCP803SN160T1G?
The typical supply current of the NCP803SN160T1G is 0.5 μA at VCC = 3.2 V.
- What are the available reset pulse widths for the NCP803SN160T1G?
The available reset pulse widths are 1 ms, 20 ms, 100 ms, and 140 ms.
- What is the operating temperature range of the NCP803SN160T1G?
The operating temperature range is -40°C to 105°C.
- Is the NCP803SN160T1G Pb-Free and RoHS compliant?
- What package types are available for the NCP803SN160T1G?
The device is available in SOT-23 and SC-70 packages.
- How does the NCP803SN160T1G handle VCC transients?
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 NCP803SN160T1G?
The reset voltage threshold (VTH) for the NCP803SN160T1G is 1.60 V.
- Does the NCP803SN160T1G require external components?
No, the NCP803SN160T1G does not require any external components.
- How long does the reset output remain active after VCC rises above the reset threshold?
The reset output remains active for a timeout period, which can be 140-460 ms depending on the device configuration.
