Overview
The TPS3803-01DCKRG4 is a supervisory circuit from Texas Instruments, designed to provide circuit initialization and timing supervision primarily for DSPs, microcontrollers, and processor-based systems. This device is part of the TPS3803 family and is available in a 5-pin SC-70 package. It offers adjustable voltage detection, making it versatile for various supply voltage requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Threshold Voltage Accuracy | ±1.5% | % |
| Supply Current at VDD = 3.3 V | 3 µA (Typical) | µA |
| Reset Output Type | Open-Drain | |
| Temperature Range | −40°C to +85°C | °C |
| Package Type | 5-Pin SC-70 | |
| Power-up Reset Voltage | 0.8 V | V |
| Input Current at SENSE | −25 to 25 nA | nA |
| High-Level Output Current at RESET | 300 nA (Typical) | nA |
| Input Capacitance | 1 pF | pF |
Key Features
- Adjustable Voltage Detection: The TPS3803-01DCKRG4 allows for adjustable voltage detection using external resistors, making it suitable for monitoring various supply voltages.
- Dual Voltage Monitoring: In addition to monitoring the supply voltage (VDD), it can also monitor a second adjustable voltage at the SENSE input.
- Low Supply Current: The device has a typical supply current of 3 µA at VDD = 3.3 V, which is beneficial for power-sensitive applications.
- Open-Drain Reset Output: The reset output is open-drain, allowing it to be connected to other logic signals.
- High Threshold Voltage Accuracy: The device offers high ±1.5% threshold voltage accuracy, ensuring reliable operation.
- Wide Temperature Range: Operates over a temperature range of −40°C to +85°C.
Applications
- Applications Using DSPs, Microcontrollers, or Microprocessors: Ideal for systems that require precise voltage monitoring and reset functions.
- Wireless Communication Systems: Suitable for battery-powered and wireless communication devices.
- Portable/Battery-Powered Equipment: Low power consumption makes it suitable for portable devices.
- Programmable Controls: Used in programmable logic controllers and other control systems.
- Intelligent Instruments: Applicable in intelligent instruments that require reliable voltage monitoring.
- Industrial Equipment: Used in various industrial applications requiring robust voltage supervision.
- Notebook/Desktop Computers: Can be used in computer systems to ensure proper voltage levels.
- Automotive Systems: Qualified for automotive applications, including advanced driver assistance systems and automotive infotainment systems.
Q & A
- What is the primary function of the TPS3803-01DCKRG4?
The primary function is to provide circuit initialization and timing supervision for DSPs, microcontrollers, and processor-based systems. - What type of reset output does the TPS3803-01DCKRG4 have?
The reset output is open-drain. - How is the threshold voltage set for the TPS3803-01DCKRG4?
The threshold voltage can be set using external resistors connected to the SENSE input. - What is the typical supply current of the TPS3803-01DCKRG4 at VDD = 3.3 V?
The typical supply current is 3 µA. - What is the temperature range for the TPS3803-01DCKRG4?
The device operates over a temperature range of −40°C to +85°C. - What package type is the TPS3803-01DCKRG4 available in?
The device is available in a 5-pin SC-70 package. - What is the power-up reset voltage for the TPS3803-01DCKRG4?
The power-up reset voltage is 0.8 V. - Can the TPS3803-01DCKRG4 monitor multiple voltages?
Yes, it can monitor both the supply voltage (VDD) and a second adjustable voltage at the SENSE input. - What are some common applications for the TPS3803-01DCKRG4?
Common applications include DSPs, microcontrollers, wireless communication systems, portable/battery-powered equipment, and automotive systems. - How accurate is the threshold voltage of the TPS3803-01DCKRG4?
The threshold voltage accuracy is ±1.5%.
