Overview
The TPS3103H20DBVR is a power management integrated circuit (PMIC) from Texas Instruments, designed as a supervisory circuit or power-on reset (POR) controller. It is part of the TPS310x and TPS311x families, which provide circuit initialization and timing supervision primarily for DSP and processor-based systems. This device is particularly useful for monitoring a single voltage supply and ensuring proper system reset by asserting a reset signal when the voltage drops below a predetermined threshold.
The TPS3103H20DBVR operates over a wide temperature range of -40°C to 85°C, making it suitable for various applications including industrial and consumer electronics. Its small SOT-23-6 surface-mount package addresses the design challenge of limited board space in compact electronic devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBV) | |
| Pins | 6 | |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 0.9 V to 3.6 V | |
| Threshold Voltage | 1.84 V | |
| Supply Current | 1.2 µA (Typical) | |
| Reset Output Type | Active-Low, Open-Drain | |
| Reset Delay Time | 65 ms to 195 ms | |
| Manual Reset Input | Pull low to force a reset | |
| Power-Fail Input (PFI) | Compares to 0.551 V |
Key Features
- Precision Supply Voltage Supervision: The TPS3103H20DBVR monitors a single voltage supply with a high trip-point accuracy of 0.75%.
- Ultra-Low Supply Current: The device operates with a typical supply current of 1.2 µA, making it suitable for low-power applications.
- Reset Defined With Low Input Voltages: RESET is asserted low when the supply voltage (VDD) becomes higher than 0.4 V.
- Power-On Reset Generator: Includes a delay time of 130 ms to ensure proper system reset after the supply voltage surpasses the threshold voltage.
- Flexible Output Configuration: Offers push/pull or open-drain RESET outputs, allowing for easy integration with various system architectures.
- Manual Reset Pin: Allows forcing the outputs low regardless of the sensed voltages.
- Compact Package: Available in a small SOT-23-6 surface-mount package, ideal for compact electronic devices.
Applications
- Industrial Automation: Suitable for industrial equipment that requires reliable power-on reset functions.
- Medical Equipment: Used in medical devices where maintaining a reliable power-on reset is crucial.
- Consumer Electronics: Commonly used in consumer electronics that require simple and reliable power-on reset functions.
- Portable and Battery-Powered Equipment: Ideal for low-power DSPs, microcontrollers, or microprocessors in portable devices.
- Intelligent Instruments and Wireless Communication Systems: Used in various intelligent instruments and wireless communication systems.
- Notebook and Desktop Computers: Can be used in notebook and desktop computers for power-on reset functions.
Q & A
- What is the primary function of the TPS3103H20DBVR?
The primary function of the TPS3103H20DBVR is to monitor a single voltage supply and provide an active-low reset signal when the voltage drops below a predetermined threshold.
- What is the operating temperature range of the TPS3103H20DBVR?
The operating temperature range of the TPS3103H20DBVR is -40°C to 85°C.
- What is the typical supply current of the TPS3103H20DBVR?
The typical supply current of the TPS3103H20DBVR is 1.2 µA.
- What type of reset output does the TPS3103H20DBVR provide?
The TPS3103H20DBVR provides an active-low, open-drain reset output.
- What is the reset delay time of the TPS3103H20DBVR?
The reset delay time of the TPS3103H20DBVR ranges from 65 ms to 195 ms.
- Does the TPS3103H20DBVR have a manual reset feature?
Yes, the TPS3103H20DBVR has a manual reset pin that can be used to force the outputs low regardless of the sensed voltages.
- What is the package type and pin count of the TPS3103H20DBVR?
The TPS3103H20DBVR is available in a SOT-23-6 surface-mount package with 6 pins.
- What are some common applications of the TPS3103H20DBVR?
Common applications include industrial automation, medical equipment, consumer electronics, portable and battery-powered equipment, intelligent instruments, and wireless communication systems.
- Is the TPS3103H20DBVR compatible with various system architectures?
Yes, the open-drain or open-collector output configuration of the TPS3103H20DBVR allows for flexibility in connecting the output to a variety of logic inputs.
- What is the threshold voltage for the TPS3103H20DBVR?
The threshold voltage for the TPS3103H20DBVR is 1.84 V.
