Overview
The MAX803SQ293D2T1G is a microprocessor reset supervisory circuit produced by onsemi. This device is designed 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. It is a cost-effective, low-power solution that does not require any external components. The MAX803SQ293D2T1G is available in SOT-23 and SC-70 packages, making it suitable for a variety of applications, including computers, embedded systems, and battery-powered equipment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage Detector Threshold (VTH) | 2.93 | V |
| Reset Timeout Period | 20-66 | ms |
| Supply Current (VCC = 3.3 V) | 0.5-1.2 | μA |
| Operating Temperature Range | -40 to +105 | °C |
| RESET Output Voltage (Low State) | 0.3 | V |
| RESET Leakage Current | 1 | μA |
| Package Type | SOT-23, SC-70 | |
| ESD Protection | Human Body Model (HBM): 2000 V, Machine Model (MM): 200 V |
Key Features
- Precision VCC monitoring for supplies from 1.2 V to 4.9 V in 100 mV steps.
- 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.
- 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 MAX803SQ293D2T1G?
The primary function is to monitor the power supply voltage (VCC) and provide a reset signal to the host processor when the voltage falls below a specified threshold. - What are the available package types for the MAX803SQ293D2T1G?
The device is available in SOT-23 and SC-70 packages. - What is the typical supply current of the MAX803SQ293D2T1G at VCC = 3.3 V?
The typical supply current is 0.5 μA to 1.2 μA. - Does the MAX803SQ293D2T1G require any external components?
No, it does not require any external components. - What is the operating temperature range of the MAX803SQ293D2T1G?
The operating temperature range is -40°C to 105°C. - What is the RESET output type of the MAX803SQ293D2T1G?
The RESET output is an open-drain active-low output. - How does the MAX803SQ293D2T1G handle VCC transients?
The device has built-in VCC transient immunity to reject fast transient glitches on the power supply line. - Is the MAX803SQ293D2T1G Pb-free and RoHS compliant?
Yes, it is Pb-free and RoHS compliant. - What are some typical applications of the MAX803SQ293D2T1G?
Typical applications include computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring. - What is the ESD protection rating of the MAX803SQ293D2T1G?
The ESD protection rating is Human Body Model (HBM): 2000 V, Machine Model (MM): 200 V.
