Overview
The TLV809K33DBZR is a 3-pin supply voltage supervisor manufactured by Texas Instruments. This device is part of the TLV809 family, designed to provide circuit initialization and timing supervision. It features fixed detection thresholds and an active-low push-pull RESET output, ensuring that the power supply is above a certain voltage threshold before the system is allowed to operate. The TLV809K33DBZR is particularly suited for applications requiring reliable voltage monitoring and reset functionality.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 2.5 | 6 | V | |
| Threshold Voltage (VIT) | 2.87 | V | ||
| RESET Output Type | Active Low, Push-Pull | |||
| ESD Rating (Human-Body Model) | ±2000 | V | ||
| ESD Rating (Charged-Device Model) | ±500 | V | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | SOT-23 (DBZ) |
Key Features
- Supply Voltage Monitoring: The device actively monitors the supply voltage to ensure it is above a certain threshold voltage.
- Fixed Detection Thresholds: Available for various standard supply voltages, approximately 10% below the nominal voltage.
- RESET Output: Active-low push-pull output that asserts when the supply voltage is below the threshold and deasserts after a delay when the voltage rises above the threshold.
- Transient Rejection: Built-in rejection of fast transients on the VDD pin to prevent false resets.
- Low Power Consumption: Suitable for low-power applications with a simple and efficient design.
Applications
The TLV809K33DBZR is suitable for a variety of applications that require reliable voltage monitoring and reset functionality. These include:
- Embedded Systems: Ensures proper system initialization and prevents operation under invalid voltage conditions.
- Industrial Control Systems: Monitors power supply voltages to ensure reliable operation of control systems.
- Consumer Electronics: Protects against voltage drops and ensures stable operation of electronic devices.
- Automotive Systems: Provides robust voltage monitoring in automotive environments.
Q & A
- What is the primary function of the TLV809K33DBZR?
The primary function is to monitor the supply voltage and provide a reset signal if the voltage falls below a specified threshold. - What are the available threshold voltages for the TLV809 family?
The TLV809 family offers fixed detection thresholds approximately 10% below several standard supply voltages (2.5 V, 3.0 V, 3.3 V, 5.0 V). - What type of output does the TLV809K33DBZR have?
The device has an active-low push-pull RESET output. - How does the device handle power-up and power-down scenarios?
The device ensures the output is valid when VDD is greater than 1.1 V, and the output transistor turns off and becomes high impedance when VDD is less than 1.1 V. - What is the recommended bypass capacitor for the TLV809K33DBZR?
A 0.1-µF ceramic bypass capacitor is recommended near the supply pins. - What are the ESD ratings for the TLV809K33DBZR?
The device has an ESD rating of ±2000 V for the Human-Body Model and ±500 V for the Charged-Device Model. - What is the operating temperature range for the TLV809K33DBZR?
The operating temperature range is -40°C to 85°C. - In what package type is the TLV809K33DBZR available?
The device is available in a SOT-23 (DBZ) package. - How does the device reject transients on the VDD pin?
The device has built-in rejection of fast transients on the VDD pin to prevent false resets. - What are some common applications for the TLV809K33DBZR?
Common applications include embedded systems, industrial control systems, consumer electronics, and automotive systems.
