Overview
The TLV803ZDBZR is a voltage supervisory circuit manufactured by Texas Instruments. It is part of the TLV8x3 family, which provides circuit initialization and timing supervision, primarily for DSPs and processor-based systems. This device is designed to monitor the supply voltage and generate a reset signal if the voltage drops below a predefined threshold, ensuring proper system operation and preventing damage from undervoltage conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 3-Pin SOT-23 | |
| Supply Current | 9 µA (Typical) | µA |
| Threshold Voltage Options | 2.25 V, 2.64 V, 2.93 V, 4.38 V | V |
| Power-On Reset Delay Time | 200 ms (Typical) | ms |
| Temperature Range | –40°C to +125°C | °C |
| RESET Output Type | Open-Drain | |
| Maximum Input Voltage Rating | 6 V | V |
| Low-Level Output Voltage | 0.3 V to 0.4 V | V |
| Output Leakage Current | 350 nA (Maximum) | nA |
Key Features
- Fixed Threshold Voltage: Provides reliable undervoltage detection with options for 2.25 V, 2.64 V, 2.93 V, and 4.38 V thresholds.
- Integrated Hysteresis: Prevents output chatter and ensures clean transitions between high and low states.
- Low Quiescent Current Consumption: Typical supply current of 9 µA, making it suitable for battery-powered applications.
- Power-On Reset Generator: Features a fixed delay time of 200 ms to ensure proper system reset.
- Pin-for-Pin Compatibility: Compatible with MAX803, offering a seamless replacement option.
- Wide Temperature Range: Operates over a temperature range of –40°C to +125°C).
- Open-Drain RESET Output: Allows for external pull-up resistor configuration).
Applications
- Factory Automation: Used in industrial control systems to ensure reliable operation).
- Portable and Battery-Powered Equipment: Ideal for devices such as smartphones and laptops due to its low power consumption).
- Set-Top Boxes and Servers: Monitors supply voltage to prevent system failures).
- Appliances and Electricity Meters: Ensures proper operation in consumer and utility devices).
- Building Automation and Automotive Systems: Suitable for use in various automated and vehicular systems).
Q & A
- Q: What is the primary function of the TLV803ZDBZR?
A: The TLV803ZDBZR is a voltage supervisory circuit that monitors the supply voltage and generates a reset signal if the voltage drops below a predefined threshold.
- Q: What are the available threshold voltage options for the TLV803ZDBZR?
A: The available threshold voltage options are 2.25 V, 2.64 V, 2.93 V, and 4.38 V.
- Q: What is the typical supply current of the TLV803ZDBZR?
A: The typical supply current is 9 µA.
- Q: What is the delay time for the power-on reset generator?
A: The delay time is typically 200 ms.
- Q: Is the TLV803ZDBZR pin-for-pin compatible with other devices?
A: Yes, it is pin-for-pin compatible with the MAX803.
- Q: What is the temperature range for the TLV803ZDBZR?
A: The operating temperature range is –40°C to +125°C.
- Q: What type of output does the TLV803ZDBZR have?
A: The TLV803ZDBZR has an open-drain RESET output.
- Q: Can the TLV803ZDBZR be used in automotive applications?
A: Yes, it is suitable for use in automotive applications that require undervoltage detection and shutdown.
- Q: What is the maximum input voltage rating for the TLV803ZDBZR?
A: The maximum input voltage rating is 6 V.
- Q: How does the TLV803ZDBZR handle fast transients on the VDD pin?
A: The TLV803ZDBZR has built-in rejection of fast transients on the VDD pin, ignoring transients that are fast duration/low amplitude or long duration/small amplitude.
