Overview
The MAX809SEUR+TG05 is a microprocessor supervisory circuit produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX803/MAX809/MAX810 family, designed to monitor the power supplies in microprocessor and digital systems. It ensures reliable operation by providing a reset signal when the power supply voltage falls below a predetermined threshold or during power-up.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| VCC Range | TA = 0°C to +70°C | 1.0 | 5.5 | V | |
| VCC Range | TA = -40°C to +105°C (MAX8_ _ _EUR) | 1.2 | 5.5 | V | |
| Supply Current (SOT23) | TA = -40°C to +85°C, VCC < 5.5V, MAX8_ _L/M | 24 | 60 | µA | |
| Supply Current (SOT23) | TA = -40°C to +85°C, VCC < 3.6V, MAX8_ _R/S/T/Z | 17 | 50 | µA | |
| Reset Threshold (SOT only) | MAX8_ _L, TA = +25°C | 4.56 | 4.63 | 4.70 | V |
| RESET Output Voltage High (push-pull active low, MAX809) | VCC > VTH (max), ISOURCE = 500µA | 0.8VCC | V | ||
| RESET Pulse Width | 140ms | ms | |||
| Package | SC70-3/SOT23-3 |
Key Features
- Precision monitoring of +2.5V, +3V, +3.3V, and +5V power-supply voltages.
- Fully specified over temperature.
- Available in three output configurations: open-drain RESET output (MAX803), push-pull RESET output (MAX809), and push-pull RESET output (MAX810).
- 140ms (minimum) power-on-reset pulse width.
- Low supply current: 12µA typical.
- Guaranteed reset valid to VCC = +1V.
- Power supply transient immunity.
- No external components required.
- AEC-Q100 qualified.
Applications
- Microprocessor and digital systems requiring power supply monitoring.
- Embedded systems where reliable reset functionality is crucial.
- Automotive and industrial control systems.
- Medical devices and other critical systems needing robust power monitoring.
Q & A
- What is the primary function of the MAX809SEUR+TG05?
The MAX809SEUR+TG05 is a microprocessor supervisory circuit designed to monitor the power supplies in microprocessor and digital systems, providing a reset signal when the power supply voltage falls below a predetermined threshold or during power-up.
- What are the available output configurations for the MAX809?
The MAX809 is available with a push-pull RESET output configuration.
- What is the minimum power-on-reset pulse width of the MAX809SEUR+TG05?
The minimum power-on-reset pulse width is 140ms.
- What is the typical supply current of the MAX809SEUR+TG05?
The typical supply current is 12µA.
- Is the MAX809SEUR+TG05 AEC-Q100 qualified?
- What are the package options for the MAX809SEUR+TG05?
The MAX809SEUR+TG05 is available in SC70-3 and SOT23-3 packages.
- Does the MAX809SEUR+TG05 require any external components?
No, the MAX809SEUR+TG05 does not require any external components.
- What is the operating temperature range for the MAX809SEUR+TG05?
The operating temperature range is from -40°C to +105°C for the EUR version.
- What are some common applications for the MAX809SEUR+TG05?
Common applications include microprocessor and digital systems, embedded systems, automotive and industrial control systems, and medical devices.
- What is the reset threshold voltage for the MAX809SEUR+TG05?
The reset threshold voltage varies depending on the version, but for the MAX809L, it is typically around 4.63V at 25°C.
