Overview
The MAX809SQ263T1G, produced by onsemi, is a cost-effective system supervisor circuit designed to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary. This device is part of the MAX809 series, which includes the MAX809 and MAX810 models. The MAX809SQ263T1G is optimized for low supply current and is suitable for battery-powered applications. It features precision VCC monitoring and provides a reset signal without the need for external components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC to GND) | -0.3 to 6.0 | V |
| RESET Output Voltage (CMOS) | -0.3 to (VCC + 0.3) | V |
| Input Current, VCC | 20 | mA |
| Output Current, RESET | 20 | mA |
| Supply Current (VCC = 3.3 V) | 0.5 | µA |
| Reset Voltage Threshold (VTH) | 2.63 | V |
| Reset Timeout Period | 1 ms, 20 ms, 100 ms, 140 ms | ms |
| Operating Temperature | -40°C to 105°C | °C |
| Package Type | SC-70 (SOT-323) |
Key Features
- Precision VCC Monitoring: For supplies of 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V, with options available in 100 mV steps from 1.2 V to 4.9 V.
- Low Supply Current: 0.5 µA at VCC = 3.3 V, making it suitable for battery-powered applications.
- No External Components Required: The device operates without the need for external components.
- RESET Output Configurations: The MAX809SQ263T1G has a push-pull RESET output that is active-low.
- VCC Transient Immunity: Optimized to reject fast transient glitches on the VCC line.
- Wide Operating Temperature Range: -40°C to 105°C.
- Small Package Options: Available in SOT-23 and SC-70 packages.
- Guaranteed Reset Valid to VCC = 1.0 V: Ensures the reset signal remains valid even at low VCC levels.
Applications
- Computers and Embedded Systems: Ideal for monitoring power supplies in various computing environments.
- Battery-Powered Equipment: Suitable for portable and battery-powered devices due to its low supply current.
- Critical Microprocessor Power Supply Monitoring: Ensures reliable operation in critical systems.
- Automotive Systems: Used in body electronics, braking, infotainment, instrument clusters, navigation, occupant comfort, and occupant protection systems.
- Intelligent Instruments and Controllers: Applicable in various industrial and consumer electronics.
Q & A
- What is the primary function of the MAX809SQ263T1G?
The primary function is to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary.
- What are the available reset timeout periods for the MAX809SQ263T1G?
The reset timeout periods are 1 ms, 20 ms, 100 ms, and 140 ms.
- What is the typical supply current of the MAX809SQ263T1G at VCC = 3.3 V?
The typical supply current is 0.5 µA.
- Does the MAX809SQ263T1G require external components to operate?
No, the device does not require external components to operate.
- What is the operating temperature range of the MAX809SQ263T1G?
The operating temperature range is -40°C to 105°C.
- What types of packages are available for the MAX809SQ263T1G?
The device is available in SOT-23 and SC-70 packages.
- How does the MAX809SQ263T1G handle VCC transients?
The device is optimized to reject fast transient glitches on the VCC line.
- Is the MAX809SQ263T1G suitable for automotive applications?
Yes, it is suitable for various automotive applications, including body electronics and infotainment systems.
- What is the reset voltage threshold for the MAX809SQ263T1G?
The reset voltage threshold (VTH) is 2.63 V.
- How long does the reset output remain active after VCC rises above the reset threshold?
The reset output remains active for the specified timeout period, which can be 1 ms, 20 ms, 100 ms, or 140 ms.
