Overview
The MAX803SQ293T1G is a cost-effective system supervisor circuit designed by onsemi to monitor the power supply voltage (VCC) in digital systems and provide a reset signal to the host processor when necessary. This device is part of the MAX803/NCP803 series and is optimized for low supply current and high transient immunity, making it suitable for battery-powered applications.
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 Active TimeOut Period | 140 | - | 460 | ms |
| RESET Output Voltage Low (VCC = VTH - 0.2 V, ISINK = 0.5 mA) | - | 0.3 | 2.1 | V |
| Operating Junction Temperature Range | -40 | - | 105 | °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.
- 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 VCC line.
- Wide operating temperature range: -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 MAX803SQ293T1G?
The MAX803SQ293T1G is designed to monitor the power supply voltage (VCC) in digital systems and provide a reset signal to the host processor when necessary.
- What are the available reset pulse widths for the MAX803SQ293T1G?
The device offers four guaranteed minimum power-on reset pulse widths: 1 ms, 20 ms, 100 ms, and 140 ms.
- What is the supply current of the MAX803SQ293T1G at VCC = 3.3 V?
The supply current is typically 0.5 μA at VCC = 3.3 V.
- Does the MAX803SQ293T1G require any external components?
No, the MAX803SQ293T1G does not require any external components to function.
- What is the operating temperature range of the MAX803SQ293T1G?
The operating temperature range is -40°C to 105°C.
- Is the MAX803SQ293T1G Pb-free and RoHS compliant?
- What type of output does the MAX803SQ293T1G have?
The device has an open-drain active-low RESET output.
- How does the MAX803SQ293T1G handle transient glitches on the VCC line?
The device is optimized to reject fast transient glitches on the VCC line, providing VCC transient immunity.
- What are some typical applications for the MAX803SQ293T1G?
Typical applications include computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
- What is the storage temperature range for the MAX803SQ293T1G?
The storage temperature range is -65°C to 150°C.
- What is the lead temperature for soldering the MAX803SQ293T1G?
The lead temperature for soldering is 260°C for 10 seconds.
