Overview
The STM6905PWEDS6F is a quintuple, ultralow voltage supervisor IC produced by STMicroelectronics. This device is designed to monitor up to five system power supply voltages, making it highly versatile for various applications. It features a low supply current and operates over a wide voltage range, from 0.8 V to 5.5 V. The STM6905PWEDS6F includes a push-button reset input and provides an open-drain reset output, ensuring reliable system operation under diverse voltage conditions.
Key Specifications
| Parameter | Description | Value | Unit |
|---|---|---|---|
| Supply Voltage (VCC) | Operating voltage range | 0.8 to 5.5 | V |
| Reset Thresholds (VRST1, VRST2) | Fixed reset thresholds for VCC and V2IN | VRST1: 2.866 V, VRST2: 1.683 V | V |
| Adjustable Thresholds (V3IN, V4IN, V5IN) | Externally adjustable reset thresholds | Using 600 mV internal reference | V |
| Reset Delay Time (tREC) | Power-on reset delay time | 210 ms (typ) | ms |
| Supply Current | Typical supply current | 12 µA | µA |
| Operating Temperature | Industrial operating temperature range | -40 °C to 85 °C | °C |
| Package | Package type | 8-pin MSOP (TSSOP) |
Key Features
- Quintuple voltage monitoring: Monitors up to five system power supply voltages.
- Accurate voltage thresholds: ±1.8% across temperature, ±1% at 25 °C.
- Fixed and adjustable reset thresholds: Two fixed thresholds for VCC and V2IN, and three externally adjustable thresholds for V3IN, V4IN, and V5IN.
- Push-button reset input: Manual reset input (MR) with internal pull-up resistor.
- Open-drain reset output: Requires an external pull-up resistor.
- Low supply current: Typical current of 12 µA.
- Wide operating voltage range: 0.8 V to 5.5 V.
- RoHS compliant: Available in green package.
Applications
- Set-top boxes (STBs): Ideal for monitoring multiple voltage levels in STBs.
- Multi-voltage systems: Suitable for systems requiring multiple voltage monitoring.
- Cable/satellite applications: Used in cable and satellite systems for reliable voltage monitoring.
- Computer systems: Applicable in various computer systems for power supply monitoring.
- Data storage equipment: Used in data storage devices to ensure stable power supply conditions.
Q & A
- What is the primary function of the STM6905PWEDS6F?
The primary function is to monitor up to five system power supply voltages and provide a reset signal if any of the monitored voltages fall below their respective thresholds.
- What are the fixed reset thresholds for VCC and V2IN?
The fixed reset thresholds are 2.866 V for VCC and 1.683 V for V2IN.
- How are the reset thresholds for V3IN, V4IN, and V5IN set?
The reset thresholds for V3IN, V4IN, and V5IN are set using an external resistor-divider network based on a 600 mV internal reference.
- What is the typical reset delay time (tREC) after power-on?
The typical reset delay time (tREC) is 210 ms.
- What is the typical supply current of the STM6905PWEDS6F?
The typical supply current is 12 µA.
- What is the operating temperature range of the STM6905PWEDS6F?
The operating temperature range is -40 °C to 85 °C.
- What type of package is the STM6905PWEDS6F available in?
The device is available in an 8-pin MSOP (TSSOP) package.
- Does the STM6905PWEDS6F have a manual reset feature?
- Is the reset output of the STM6905PWEDS6F open-drain or push-pull?
The reset output is open-drain and requires an external pull-up resistor.
- Is the STM6905PWEDS6F RoHS compliant?
