Overview
The MAX809JTRG, produced by onsemi, is a cost-effective system supervisor circuit designed to monitor the supply voltage (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, and is optimized for low supply current and high reliability. The MAX809JTRG is particularly suited for battery-powered applications and critical microprocessor power supply monitoring due to its low power consumption and robust transient immunity.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Supply Voltage (VCC) | VCC | - | -0.3 | - | 6.0 | V |
| Reset Threshold Voltage | VTH | TA = +25°C | 3.93 | 4.00 | 4.06 | V |
| Supply Current (VCC = 3.3V) | ICC | TA = -40°C to +85°C | - | 0.5 | - | µA |
| Reset Active Timeout Period | tRP | TA = -40°C to +85°C | 140 | 240 | 560 | ms |
| RESET Output Voltage Low | VOL | VCC = VTH (min), ISINK = 1.2mA | - | 0.3 | - | V |
| Operating Temperature | TA | - | -40 | - | 105 | °C |
| Package Type | - | - | - | - | SOT-23, SC-70 | - |
Key Features
- Precision VCC monitoring for 1.5V, 2.5V, 3.0V, 3.3V, and 5.0V supplies, with voltages available in 100mV steps from 1.2V to 4.9V.
- Four guaranteed minimum power-on reset pulse widths: 1ms, 20ms, 100ms, and 140ms.
- RESET output guaranteed to VCC = 1.0V.
- Low supply current of 0.5µA (VCC = 3.3V), making it suitable for battery-powered applications.
- VCC transient immunity to reject fast transient glitches.
- No external components required.
- Wide operating temperature range: -40°C to 105°C.
- Available in SOT-23 and SC-70 packages.
- AEC-Q100 qualified for automotive applications.
Applications
- Computers and embedded systems.
- Battery-powered equipment.
- Critical microprocessor power supply monitoring.
- Automotive systems, including body electronics, braking, infotainment, instrument clusters, navigation, occupant comfort, occupant protection, and powertrain.
- Portable and battery-powered devices.
- Intelligent instruments and controllers.
Q & A
- What is the primary function of the MAX809JTRG?
The MAX809JTRG is designed to monitor the supply voltage (VCC) in digital systems and provide a reset signal to the host processor when necessary.
- What are the available reset threshold voltages for the MAX809JTRG?
The MAX809JTRG offers precision monitoring voltages from 1.2V to 4.9V in 100mV steps, including specific thresholds for 1.5V, 2.5V, 3.0V, 3.3V, and 5.0V supplies.
- What is the typical supply current of the MAX809JTRG at VCC = 3.3V?
The typical supply current is 0.5µA at VCC = 3.3V.
- What are the available reset pulse widths for the MAX809JTRG?
The device offers four guaranteed minimum power-on reset pulse widths: 1ms, 20ms, 100ms, and 140ms.
- Is the MAX809JTRG suitable for battery-powered applications?
Yes, the low supply current makes it highly suitable for battery-powered applications.
- What is the operating temperature range of the MAX809JTRG?
The operating temperature range is -40°C to 105°C.
- What packages are available for the MAX809JTRG?
The device is available in SOT-23 and SC-70 packages.
- Does the MAX809JTRG require external components?
No, the MAX809JTRG does not require any external components.
- Is the MAX809JTRG AEC-Q100 qualified?
Yes, the MAX809JTRG is AEC-Q100 qualified, making it suitable for automotive applications.
- What is the RESET output configuration of the MAX809JTRG?
The MAX809JTRG has an active-low RESET output.
