Overview
The TPS3103K33DBVR is a supervisory circuit from Texas Instruments, designed to provide circuit initialization and timing supervision primarily for DSP and processor-based systems. This ultra-low supply current voltage supervisor is part of the TPS310x and TPS311x families, which operate over a wide supply voltage range of 0.9 V to 3.6 V. The device is packaged in a 6-pin SOT-23 (DBV) package and is characterized for operation over a temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Description |
|---|---|
| Package | SOT-23 (DBV), 6 pins |
| Operating Temperature Range | –40°C to 125°C |
| Supply Voltage Range | 0.9 V to 3.6 V |
| Threshold Voltages | 0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, and 3.3 V |
| Trip-Point Accuracy | 0.75% |
| Supply Current | 1.2 µA (Typical) |
| RESET Output Type | Active-low, open-drain |
| Power-On Reset Delay Time | 130 ms |
| Manual Reset Input | Manual-reset pin (MR) to force outputs low |
| Power-Fail Input (PFI) | Integrated power-fail input with corresponding power-fail output (PFO) |
Key Features
- Precision supply voltage supervision with high trip-point accuracy of 0.75%.
- Ultra-low supply current of 1.2 µA (Typical).
- RESET defined with input voltages as low as 0.4 V.
- Power-on reset generator with a delay time of 130 ms.
- Push/pull or open-drain RESET outputs.
- Integrated power-fail input (PFI) and corresponding power-fail output (PFO) for monitoring other voltages.
- Manual reset pin (MR) to force the outputs low regardless of the sensed voltages.
Applications
- Systems using low-power DSPs, microcontrollers, or microprocessors.
- Portable and battery-powered equipment.
- Intelligent instruments.
- Wireless communication systems.
- Industrial equipment.
- Notebook and desktop computers.
Q & A
- What is the primary function of the TPS3103K33DBVR?
The primary function of the TPS3103K33DBVR is to provide circuit initialization and timing supervision for DSP and processor-based systems.
- What is the operating temperature range of the TPS3103K33DBVR?
The operating temperature range is –40°C to 125°C.
- What are the available threshold voltages for the TPS3103K33DBVR?
The available threshold voltages are 0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, and 3.3 V.
- What is the typical supply current of the TPS3103K33DBVR?
The typical supply current is 1.2 µA.
- What type of RESET output does the TPS3103K33DBVR have?
The TPS3103K33DBVR has an active-low, open-drain RESET output.
- What is the power-on reset delay time of the TPS3103K33DBVR?
The power-on reset delay time is 130 ms.
- Does the TPS3103K33DBVR have a manual reset feature?
Yes, it has a manual reset pin (MR) to force the outputs low regardless of the sensed voltages.
- What is the purpose of the power-fail input (PFI) and power-fail output (PFO) in the TPS3103K33DBVR?
The PFI and PFO are used for low-battery detection, power-fail warning, or for monitoring a power supply other than the main supply.
- In what package is the TPS3103K33DBVR available?
The TPS3103K33DBVR is available in a 6-pin SOT-23 (DBV) package.
- What are some common applications of the TPS3103K33DBVR?
Common applications include systems using low-power DSPs, microcontrollers, or microprocessors, portable and battery-powered equipment, intelligent instruments, wireless communication systems, industrial equipment, and notebook and desktop computers.
