Overview
The MAX809SEUR+TG24 is a microprocessor supervisory circuit produced by Analog Devices Inc./Maxim Integrated. This component is designed to monitor the 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.
It is part of the MAX803/MAX809/MAX810 family, which offers various configurations to suit different system requirements. The MAX809 specifically features a push-pull RESET output, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|
| VCC Range | TA = -40°C to +105°C | 1.2 | - | 5.5 | V |
| Supply Current (SOT23) | TA = -40°C to +85°C, VCC < 5.5V | 24 | 60 | 100 | µA |
| Reset Threshold (SOT only) | TA = +25°C | 4.31 | 4.38 | 4.45 | V |
| RESET Output Voltage High | VCC > VTH (max), ISOURCE = 500µA | 0.8VCC | - | - | V |
| RESET Output Voltage Low | VCC > VTH (max), ISINK = 1.2mA | 0.3 | - | - | V |
| Power-On-Reset Pulse Width | - | 140ms | - | - | ms |
| Package | - | - | - | - | SOT23-3, SC70-3 |
Key Features
- Precision Monitoring: Monitors +2.5V, +3V, +3.3V, and +5V power-supply voltages with high accuracy.
- Push-Pull RESET Output: Provides a push-pull active-low RESET output, suitable for driving both CMOS and TTL logic.
- Low Supply Current: Consumes only 12µA of supply current, making it power-efficient.
- Guaranteed Reset Valid to VCC = +1V: Ensures the reset signal is valid even at low supply voltages.
- Power Supply Transient Immunity: Resistant to power supply transients, ensuring stable operation.
- No External Components Required: Operates without the need for external components, simplifying the design process.
- Compact Packages: Available in 3-pin SOT23 and SC70 packages, ideal for space-constrained designs.
- AEC-Q100 Qualified: Meets the stringent requirements of the automotive industry.
Applications
- Microprocessor and Microcontroller Systems: Ideal for monitoring power supplies in μP and digital systems to ensure reliable operation.
- Automotive Systems: AEC-Q100 qualified, making it suitable for use in automotive electronics.
- Industrial Control Systems: Used in industrial control systems where reliable power monitoring is critical.
- Medical Devices: Applicable in medical devices that require precise power supply monitoring.
- Consumer Electronics: Used in various consumer electronics to ensure stable and reliable operation.
Q & A
- What is the primary function of the MAX809SEUR+TG24?
The primary function is to monitor the power supplies in microprocessor and digital systems, providing a reset signal when the power supply voltage falls below a predetermined threshold.
- What types of power supply voltages can the MAX809SEUR+TG24 monitor?
The MAX809SEUR+TG24 can monitor +2.5V, +3V, +3.3V, and +5V power-supply voltages.
- What is the typical supply current of the MAX809SEUR+TG24?
The typical supply current is 12µA.
- Does the MAX809SEUR+TG24 require external components to operate?
No, it does not require any external components to operate.
- What are the available package types for the MAX809SEUR+TG24?
The MAX809SEUR+TG24 is available in 3-pin SOT23 and SC70 packages.
- Is the MAX809SEUR+TG24 qualified for automotive applications?
Yes, it is AEC-Q100 qualified, making it suitable for automotive applications.
- What is the minimum power-on-reset pulse width of the MAX809SEUR+TG24?
The minimum power-on-reset pulse width is 140ms.
- How does the MAX809SEUR+TG24 handle power supply transients?
The MAX809SEUR+TG24 is designed with power supply transient immunity to ensure stable operation.
- What is the operating temperature range of the MAX809SEUR+TG24?
The operating temperature range is from -40°C to +105°C.
- Can the MAX809SEUR+TG24 be used in medical devices?
Yes, it can be used in medical devices where precise power supply monitoring is required.
