Overview
The STM809LWX6F is a low-power supervisory device from STMicroelectronics, designed to monitor power supplies and ensure proper system operation. It is part of the STM809/810/811/812 series of microprocessor reset circuits. This device asserts a reset signal whenever the VCC supply voltage drops below a preset value and keeps it asserted until VCC has risen above the preset threshold for a minimum period of time (trec).
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT23-3 |
| Number of Supervisors | 1 |
| Output Driver | Active Low, Push-Pull |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C to 85°C (Industrial Grade) |
| Supply Voltage Range | 1V to 5.5V |
| Reset Pulse Width | 140 ms (min) |
| Supply Current | 6 µA (typ) |
| RoHS Compliance | Ecopack3 |
Key Features
- Lead-free, small SOT23 package
- Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages
- Guaranteed RST/RST assertion down to VCC = 1.0 V
- Low supply current - 6 µA (typ)
- Push-pull RST output configuration
- Operating temperature range: -40°C to 85°C (Industrial Grade)
Applications
- Communications equipment
- Computers and peripherals
- Industrial applications
Q & A
- What is the primary function of the STM809LWX6F?
The primary function of the STM809LWX6F is to monitor the power supply and assert a reset signal if the supply voltage drops below a preset threshold.
- What is the package type of the STM809LWX6F?
The package type of the STM809LWX6F is SOT23-3.
- What is the operating temperature range of the STM809LWX6F?
The operating temperature range of the STM809LWX6F is -40°C to 85°C (Industrial Grade).
- What is the typical supply current of the STM809LWX6F?
The typical supply current of the STM809LWX6F is 6 µA.
- What is the minimum reset pulse width of the STM809LWX6F?
The minimum reset pulse width of the STM809LWX6F is 140 ms.
- Is the STM809LWX6F RoHS compliant?
- What are the typical applications of the STM809LWX6F?
The STM809LWX6F is typically used in communications equipment, computers and peripherals, and industrial applications.
- What is the supply voltage range of the STM809LWX6F?
The supply voltage range of the STM809LWX6F is 1V to 5.5V.
- Does the STM809LWX6F have a push-button reset input?
No, the STM809LWX6F does not have a push-button reset input; this feature is available in the STM811/812 models.
- How does the STM809LWX6F ensure reliable operation?
The STM809LWX6F ensures reliable operation by asserting a reset signal whenever the VCC supply voltage drops below a preset threshold and keeping it asserted until VCC has risen above the preset threshold for a minimum period of time.
