Overview
The MAX809SEUR+T10 is a microprocessor supervisory circuit produced by Analog Devices Inc./Maxim Integrated. This component is designed to monitor power supplies in microprocessor and digital systems, ensuring reliable operation by providing a reset signal when the power supply voltage falls below a predetermined threshold. Available in a compact 3-pin SC70 or SOT23 package, it is ideal for applications requiring precision voltage monitoring and reset functionality.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| VCC Range | 1.0 to 5.5 | V |
| Monitored Voltages | +2.5V, +3V, +3.3V, +5V | V |
| Undervoltage Threshold | 2.89 V (for 3V version) | V |
| Supply Current (SOT23) | 12 μA (typical at VCC < 5.5V) | μA |
| RESET Output Type | Push-Pull, Active Low | |
| Power-On-Reset Pulse Width | 140 ms (minimum) | ms |
| Package Type | SC70-3, SOT23-3 | |
| Operating Temperature Range | -40°C to +105°C | °C |
Key Features
- Precision monitoring of +2.5V, +3V, +3.3V, and +5V power-supply voltages
- Fully specified over temperature
- Available in push-pull RESET output configuration
- No external components required
- Low supply current (12 μA typical)
- Guaranteed reset valid to VCC = +1V
- Power supply transient immunity
- AEC-Q100 qualified
Applications
- Microprocessor and digital system power supply monitoring
- Embedded systems requiring reliable reset functionality
- Industrial control systems
- Automotive electronics (AEC-Q100 qualified)
- Telecommunications and networking equipment
Q & A
- What is the primary function of the MAX809SEUR+T10? The primary function is to monitor power supplies in microprocessor and digital systems, providing a reset signal when the voltage falls below a predetermined threshold.
- What are the monitored voltages for the MAX809SEUR+T10? The component monitors +2.5V, +3V, +3.3V, and +5V power-supply voltages.
- What is the typical supply current of the MAX809SEUR+T10? The typical supply current is 12 μA.
- What is the minimum power-on-reset pulse width? The minimum power-on-reset pulse width is 140 ms.
- What package types are available for the MAX809SEUR+T10? The component is available in SC70-3 and SOT23-3 packages.
- Is the MAX809SEUR+T10 AEC-Q100 qualified? Yes, it is AEC-Q100 qualified.
- What is the operating temperature range of the MAX809SEUR+T10? The operating temperature range is -40°C to +105°C.
- Does the MAX809SEUR+T10 require external components? No, it does not require external components.
- What type of RESET output does the MAX809SEUR+T10 have? The component has a push-pull, active low RESET output.
- What is the undervoltage threshold for the 3V version of the MAX809SEUR+T10? The undervoltage threshold for the 3V version is 2.89 V.
