Overview
The MAX803SQ463T1G is a microprocessor reset supervisory circuit manufactured by onsemi. This device is designed to monitor the power supply voltage in digital systems and provide a reset signal to the host processor when the voltage falls below a specified threshold. It is particularly suited for applications requiring low power consumption and high reliability.
The MAX803SQ463T1G is part of the MAX803/NCP803 series, known for their very low supply current, making them ideal for battery-powered devices. The device features an open-drain active-low RESET output and does not require any external components for operation.
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 |
| Supply Current (VCC = 5.5 V) | - | 1.8 | 2.5 | μA |
| Reset Threshold Voltage (VTH) | - | 4.63 | - | 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 |
Key Features
- Precision VCC monitoring for 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V supplies, 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).
- 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 reliable power supply monitoring and reset functionality.
Q & A
- What is the primary function of the MAX803SQ463T1G?
The primary function of the MAX803SQ463T1G is to monitor the power supply voltage 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 MAX803SQ463T1G at VCC = 3.3 V?
The typical supply current is 0.5 μA at VCC = 3.3 V.
- What are the available reset timeout periods for the MAX803SQ463T1G?
The available reset timeout periods are 1 ms, 20 ms, 100 ms, and 140 ms.
- Does the MAX803SQ463T1G require any external components for operation?
No, the MAX803SQ463T1G does not require any external components for operation.
- What is the operating temperature range of the MAX803SQ463T1G?
The operating temperature range is -40°C to 105°C.
- Is the MAX803SQ463T1G Pb-free and RoHS compliant?
- What types of applications are the MAX803SQ463T1G typically used in?
The MAX803SQ463T1G is typically used in computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
- How does the MAX803SQ463T1G handle transient glitches on the power supply line?
The MAX803SQ463T1G features VCC transient immunity to reject fast transient glitches on the power supply line.
- What is the reset threshold voltage for the MAX803SQ463T1G?
The reset threshold voltage (VTH) for the MAX803SQ463T1G is 4.63 V.
- What is the lead temperature for soldering the MAX803SQ463T1G?
The lead temperature for soldering is 260°C for 10 seconds.
