Overview
The MAX803SQ293D3T1G is a microprocessor reset supervisory circuit manufactured by onsemi. This device is part of the MAX803/NCP803 series, designed to monitor the power supply in digital systems and provide a reset signal to the host processor when necessary. It is a cost-effective, 3-pin system supervisor that does not require any external components. The MAX803SQ293D3T1G is optimized for low supply current, making it suitable for battery-powered applications, and it offers precision VCC monitoring with various threshold voltage options.
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) | - | 2.93 | - | V |
| Reset Active TimeOut Period | 100 | - | 330 | ms |
| RESET Output Voltage Low (VCC = VTH - 0.2 V, ISINK = 0.5 mA) | - | 0.3 | - | V |
| Operating Temperature | -40 | - | 105 | °C |
| Package Type | - | - | SC-70 (SOT-323) | - |
Key Features
- Precision VCC monitoring for supplies from 1.5 V to 5.0 V, 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 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.
Q & A
- What is the primary function of the MAX803SQ293D3T1G?
The MAX803SQ293D3T1G is designed to monitor the power supply in digital systems and provide a reset signal to the host processor when the supply voltage falls below a specified threshold.
- What is the typical supply current of the MAX803SQ293D3T1G?
The typical supply current is 0.5 μA at VCC = 3.2 V.
- What are the available reset timeout periods for the MAX803SQ293D3T1G?
The available reset timeout periods are 100 ms to 330 ms.
- Does the MAX803SQ293D3T1G require any external components?
No, the MAX803SQ293D3T1G does not require any external components.
- What is the operating temperature range of the MAX803SQ293D3T1G?
The operating temperature range is -40°C to 105°C.
- Is the MAX803SQ293D3T1G Pb-free and RoHS compliant?
- What type of package is the MAX803SQ293D3T1G available in?
The MAX803SQ293D3T1G is available in the SC-70 (SOT-323) package.
- How does the MAX803SQ293D3T1G handle transient glitches on the power supply line?
The MAX803SQ293D3T1G is designed to reject fast transient glitches on the power supply line, improving its reliability in noisy environments.
- What are some typical applications of the MAX803SQ293D3T1G?
Typical applications include computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
- Can the reset threshold voltage be customized for the MAX803SQ293D3T1G?
Contact your onsemi sales representative for other threshold voltage options.
