Overview
The MAX809SEUR+T, produced by Analog Devices Inc./Maxim Integrated, is a 3-pin microprocessor supervisory circuit designed to monitor power supplies in microprocessor and digital systems. This component is part of the MAX803/MAX809/MAX810 family, which offers various output configurations to suit different application needs.
The MAX809 specifically features a push-pull RESET output, ensuring reliable reset signals during power-on and power-down sequences. It is fully specified over a wide temperature range and requires no external components, making it a compact and efficient solution for system design.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| VCC Range | VCC | TA = 0°C to +70°C | 1.0 | 5.5 | V | |
| VCC Range | VCC | TA = -40°C to +105°C (MAX8_ _ _EUR) | 1.2 | 5.5 | V | |
| Supply Current (SOT23) | ICC | TA = -40°C to +85°C, VCC < 5.5V, MAX8_ _L/M | 24 | 60 | µA | |
| Reset Threshold (SOT only) | VTH | MAX8_ _L, TA = +25°C | 4.56 | 4.63 | 4.70 | V |
| Power-On-Reset Pulse Width | 140 | ms | ||||
| RESET Output Voltage High | VOH | VCC > VTH (max), ISOURCE = 500µA | 0.8VCC | V |
Key Features
- Precision monitoring of +2.5V, +3V, +3.3V, and +5V power-supply voltages.
- Push-pull RESET output configuration.
- Guaranteed reset valid to VCC = +1V.
- Power supply transient immunity.
- No external components required.
- Available in 3-pin SC70 and SOT23 packages.
- AEC-Q100 qualified.
- Low supply current of 12µA.
- 140ms (min) power-on-reset pulse width.
Applications
- Microprocessor and digital system power supply monitoring.
- Embedded systems requiring reliable reset signals.
- Automotive and industrial control systems.
- Medical devices and equipment.
- Any system requiring precision voltage monitoring and reset functionality.
Q & A
- What is the primary function of the MAX809SEUR+T?
The primary function of the MAX809SEUR+T is to monitor the power supplies in microprocessor and digital systems, providing a reliable reset signal when the voltage falls below a specified threshold.
- What are the available output configurations for the MAX809 family?
The MAX809 family offers a push-pull RESET output configuration.
- What is the minimum power-on-reset pulse width for the MAX809SEUR+T?
The minimum power-on-reset pulse width is 140ms.
- What is the supply current range for the MAX809SEUR+T?
The supply current ranges from 17µA to 60µA depending on the temperature and VCC conditions.
- Is the MAX809SEUR+T AEC-Q100 qualified?
Yes, the MAX809SEUR+T is AEC-Q100 qualified.
- What are the available package types for the MAX809SEUR+T?
The MAX809SEUR+T is available in 3-pin SC70 and SOT23 packages.
- Does the MAX809SEUR+T require any external components?
No, the MAX809SEUR+T does not require any external components.
- What is the reset threshold voltage range for the MAX809SEUR+T?
The reset threshold voltage range varies depending on the version, but for example, the MAX8_ _L version has a reset threshold of 4.56V to 4.70V at +25°C.
- What is the typical supply current at room temperature for the MAX809SEUR+T?
The typical supply current at room temperature is around 60µA for the MAX8_ _L/M versions.
- Is the MAX809SEUR+T suitable for automotive applications?
Yes, the MAX809SEUR+T is suitable for automotive applications due to its AEC-Q100 qualification.
