Overview
The MAX809STRG, 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 variants with different reset output configurations and threshold voltages. The MAX809STRG is optimized for low supply current and high reliability, making it suitable for a wide range of applications, including battery-powered equipment and critical microprocessor power supply monitoring.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Range | VCC | 1.0 | - | 5.5 | V |
| Supply Current (SOT23) | ICC | 17 | 24 | 60 | µA |
| Reset Threshold | VTH | 2.93 | - | - | V |
| VCC to Reset Delay | - | - | 10 | - | µs |
| Reset Active Timeout Period | tRP | 140 | - | 460 | ms |
| RESET Output Voltage Low | VOL | 0.3 | - | - | V |
| Operating Temperature | TA | -40 | - | 105 | °C |
| Package Type | - | - | - | SOT-23, SC-70 | - |
Key Features
- Precision VCC monitoring for 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V supplies.
- Precision monitoring voltages from 1.2 V to 4.9 V available in 100 mV steps.
- Four guaranteed minimum power-on reset pulse widths (1 ms, 20 ms, 100 ms, and 140 ms).
- RESET output guaranteed to VCC = 1.0 V.
- Low supply current of 0.5 µA (VCC = 3.3 V).
- VCC transient immunity.
- No external components required.
- Wide operating temperature range: -40°C to 105°C.
- Available in SOT-23 and SC-70 packages.
Applications
- Computers and embedded systems.
- Battery-powered equipment.
- Critical microprocessor power supply monitoring.
- Automotive electronics (body electronics, braking, infotainment, instrument cluster, navigation, occupant comfort, occupant protection, powertrain).
- Precision VCC monitoring for various supply voltages.
Q & A
- What is the primary function of the MAX809STRG?
The MAX809STRG is designed to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary.
- What are the available package types for the MAX809STRG?
The MAX809STRG is available in SOT-23 and SC-70 packages.
- What is the typical supply current of the MAX809STRG at VCC = 3.3 V?
The typical supply current is 0.5 µA at VCC = 3.3 V.
- What is the reset active timeout period for the MAX809STRG?
The reset active timeout period ranges from 140 ms to 460 ms.
- Does the MAX809STRG require any external components?
No, the MAX809STRG does not require any external components.
- What is the operating temperature range of the MAX809STRG?
The operating temperature range is -40°C to 105°C.
- What are some common applications of the MAX809STRG?
Common applications include computers, embedded systems, battery-powered equipment, and automotive electronics.
- How does the MAX809STRG handle VCC transient glitches?
The MAX809STRG is optimized to reject fast transient glitches on the VCC line.
- What is the reset threshold voltage for the MAX809STRG?
The reset threshold voltage for the MAX809STRG is 2.93 V.
- Is the MAX809STRG suitable for automotive applications?
Yes, the MAX809STRG, particularly the NCV version, is suitable for automotive applications and is AEC-Q100 qualified.
- What is the VCC to reset delay for the MAX809STRG?
The VCC to reset delay is 10 µs.
