Overview
The MAX803SQ120T1G is a cost-effective system supervisor circuit designed by onsemi to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary. This device is part of the MAX803 series and is optimized for low power consumption and high reliability. It is particularly suitable for battery-powered applications due to its low supply current of 0.5 μA at 3.2 V. The MAX803SQ120T1G is available in a compact SC-70-3 package, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VCC Range | 1.0 to 5.5 | V |
| Supply Current (VCC = 3.3 V) | 0.5 to 1.2 | μA |
| Reset Threshold Voltage | 1.20 | V |
| Reset Timeout Period | 140 to 460 ms | ms |
| VCC to Reset Delay | 10 μs | μs |
| Operating Temperature | -40°C to 105°C | °C |
| Package Type | SC-70-3 | |
| RESET Output Type | Open Drain Active-Low |
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
- 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 MAX803SQ120T1G?
The primary function is to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary. - What is the typical supply current of the MAX803SQ120T1G at 3.3 V?
The typical supply current is 0.5 μA. - What are the available reset timeout periods for the MAX803SQ120T1G?
The reset timeout periods available are 140 to 460 ms. - What is the operating temperature range of the MAX803SQ120T1G?
The operating temperature range is -40°C to 105°C. - Is the MAX803SQ120T1G Pb-Free and RoHS Compliant?
Yes, it is Pb-Free and RoHS Compliant. - What type of package is the MAX803SQ120T1G available in?
The MAX803SQ120T1G is available in a SC-70-3 package. - Does the MAX803SQ120T1G require external components?
No, it does not require external components. - What is the reset threshold voltage for the MAX803SQ120T1G?
The reset threshold voltage is 1.20 V. - How does the MAX803SQ120T1G handle VCC transients?
The device is optimized to reject fast transient glitches on the VCC line. - What are some typical applications of the MAX803SQ120T1G?
Typical applications include computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
