Overview
The STM6719TGWB6F is a part of the STM6717/18/19/20 and STM6777/78/79/80 family of low-voltage/low-supply current processor supervisors designed by STMicroelectronics. These supervisors are engineered to monitor two or three system power supply voltages, making them ideal for various applications such as set-top boxes (STBs), portable battery-powered systems, networking, and communication systems. The device features a push-button-type manual reset input and optional delayed manual reset functionality with an external capacitor.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOT23-6L |
| Grade | Industrial |
| RoHS Compliance | Ecopack3 |
| Operating Temperature | –40 °C to 85 °C |
| Primary Supply (VCC1) Monitor | Fixed (factory-programmed) reset thresholds: 4.63 V to 1.58 V |
| Secondary Supply (VCC2) Monitor | Fixed (factory-programmed) reset thresholds: 3.08 V to 0.79 V |
| Tertiary Supply Monitor | Externally adjustable RSTIN: 0.626 V internal reference |
| Reset Output (RST) | Push-pull or open drain; state guaranteed if VCC1 or VCC2 ≥ 0.8 V |
| Reset Delay Time (trec) | 13.2 ms, 210 ms, 900 ms (typ) |
| Manual Reset Input (MR) | Push-button-type manual reset input |
| Optional Delayed Manual Reset Input (MRC) | With external capacitor (typical 4 s delay with a 3.3 μF capacitor) |
| Supply Current | 11 μA (typ), VCC1 = VCC2 = 3.6 V |
Key Features
- Primary supply (VCC1) monitor with fixed (factory-programmed) reset thresholds.
- Secondary supply (VCC2) monitor with fixed (factory-programmed) reset thresholds.
- Tertiary supply monitor using an externally adjustable RSTIN threshold.
- RST outputs (push-pull or open drain) with guaranteed state if VCC1 or VCC2 ≥ 0.8 V.
- Manual reset input (MR) and optional delayed manual reset input (MRC) with external capacitor.
- Low supply current of 11 μA (typ) at VCC1 = VCC2 = 3.6 V.
- Operating temperature range of –40 °C to 85 °C.
Applications
The STM6719TGWB6F is suitable for a variety of applications, including:
- Set-top boxes (STBs).
- Portable, battery-powered systems.
- Networking and communication systems.
Q & A
- What is the primary function of the STM6719TGWB6F?
The primary function is to monitor two or three system power supply voltages and provide a reset signal if any of the monitored voltages drop below their respective thresholds. - What are the package options for the STM6719TGWB6F?
The device is available in a standard 5-pin or 6-pin SOT23 package. - What is the operating temperature range of the STM6719TGWB6F?
The operating temperature range is –40 °C to 85 °C. - How does the manual reset input work?
The device features a push-button-type manual reset input (MR), and some versions also include an optional delayed manual reset input (MRC) with an external capacitor. - What are the typical reset delay times?
The reset delay times are 13.2 ms, 210 ms, and 900 ms (typ). - What is the supply current of the STM6719TGWB6F?
The supply current is typically 11 μA at VCC1 = VCC2 = 3.6 V. - Is the STM6719TGWB6F RoHS compliant?
Yes, the device is RoHS compliant with an Ecopack3 rating. - What types of applications is the STM6719TGWB6F suited for?
The device is suited for set-top boxes, portable battery-powered systems, and networking and communication systems. - How does the tertiary supply monitor work?
The tertiary supply monitor uses an externally adjustable RSTIN threshold with a 0.626 V internal reference. - What are the fixed reset thresholds for VCC1 and VCC2?
The fixed reset thresholds for VCC1 are 4.63 V to 1.58 V, and for VCC2, they are 3.08 V to 0.79 V.
