Overview
The MAX809SEUR+TG002 is a microprocessor supervisory circuit designed and manufactured by Analog Devices Inc./Maxim Integrated. This component is part of the MAX809 series, which is used to monitor power supplies in microprocessor and digital systems, providing a reset signal to the processor when the power supply voltage falls below a specified threshold.
The MAX809 is available in various configurations, including push-pull RESET output, and is known for its precision monitoring of power supply voltages such as +2.5V, +3V, +3.3V, and +5V. It is fully specified over temperature and requires no external components for operation.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| VCC Range | VCC | TA = -40°C to +105°C | 1.2 | 5.5 | V | |
| Supply Current (SOT23) | ICC | TA = -40°C to +85°C, VCC < 5.5V | 24 | 60 | 100 | µA |
| Reset Threshold | VTH | VCC = VTH (min), ISINK = 1.2mA | 0.3 | V | ||
| RESET Output Voltage High | VOH | VCC > VTH (max), ISOURCE = 500µA | 0.8VCC | V | ||
| RESET Output Voltage Low | VOL | VCC = VTH - 0.2V, ISINK = 0.5mA | 0.3 | V | ||
| Power-On-Reset Pulse Width | tRP | 140 | ms | |||
| Operating Temperature | TA | -40 | 105 | °C |
Key Features
- Precision monitoring of +2.5V, +3V, +3.3V, and +5V power supply voltages.
- Available in three output configurations: open-drain RESET output (MAX803), push-pull RESET output (MAX809), and push-pull RESET output (MAX810).
- Low supply current of 12µA (typical) at VCC < 5.5V.
- Guaranteed reset valid to VCC = +1V.
- No external components required.
- Power supply transient immunity.
- Available in 3-pin SC70 and SOT23 packages.
- AEC-Q100 qualified.
- Wide operating temperature range: -40°C to +105°C.
Applications
- Digital power system management.
- Hot swap controllers and hot plug applications.
- Power monitors and supervisory circuits.
- Battery-powered systems due to low supply current.
- Systems requiring precise power supply monitoring and reset functionality during power-up, power-down, and brownout/sag conditions.
Q & A
- What is the primary function of the MAX809SEUR+TG002?
The primary function of the MAX809SEUR+TG002 is to monitor the power supply voltage in microprocessor and digital systems and provide a reset signal to the processor when the voltage falls below a specified threshold.
- What are the available output configurations for the MAX809 series?
The MAX809 series is available in push-pull RESET output configuration.
- What is the typical supply current of the MAX809?
The typical supply current of the MAX809 is 12µA at VCC < 5.5V.
- What is the minimum power-on-reset pulse width for the MAX809?
The minimum power-on-reset pulse width for the MAX809 is 140ms.
- Does the MAX809 require any external components for operation?
No, the MAX809 does not require any external components for operation.
- What is the operating temperature range of the MAX809?
The operating temperature range of the MAX809 is -40°C to +105°C.
- Is the MAX809 suitable for battery-powered applications?
- What types of packages are available for the MAX809?
The MAX809 is available in 3-pin SC70 and SOT23 packages.
- Is the MAX809 AEC-Q100 qualified?
- How does the MAX809 handle power supply transients?
The MAX809 has built-in power supply transient immunity to reject fast transient glitches on the VCC line.
