Overview
The TPS3307-33DRG4 is a micropower supply voltage supervisor from Texas Instruments, designed primarily for circuit initialization in DSP and processor-based systems that require monitoring of multiple supply voltages. This component is part of the TPS3307 family, which is known for its low power consumption and robust monitoring capabilities. The TPS3307-33DRG4 is particularly suited for applications that need to monitor three independent supply voltages, such as 5V, 3.3V, and an adjustable voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2 to 6 | V |
| Number of Voltages Monitored | 3 | |
| Package Type | 8-SOIC (0.154", 3.90mm Width) | |
| Operating Temperature Range | -40°C to +85°C | °C |
| Maximum Supply Current | 40 µA | µA |
| RESET Output Assertion | When VDD ≥ 1.1 V | |
| Threshold Voltages | SENSE1: 4.55 V, SENSE2: 2.93 V, SENSE3: Adjustable >1.25 V | V |
Key Features
- Power-On Reset Generator with a fixed delay time of 200 ms, no external capacitor needed.
- Temperature-compensated voltage reference.
- Adjustable SENSE input for monitoring any supply voltage greater than 1.25 V.
- Low power consumption with a maximum supply current of 40 µA.
- Defined RESET output from VDD ≥ 1.1 V.
- Available in MSOP-8 and SO-8 packages.
Applications
- DSP and processor-based systems requiring multiple supply voltage monitoring.
- Military applications using DSPs, microcontrollers, or microprocessors.
- Industrial equipment and programmable controls.
- Military systems and other critical applications where reliable power-on reset and voltage monitoring are essential.
Q & A
- What is the primary function of the TPS3307-33DRG4? The primary function is to monitor multiple supply voltages and provide a power-on reset in DSP and processor-based systems.
- What are the typical supply voltages monitored by the TPS3307-33DRG4? The component monitors 5V, 3.3V, and an adjustable voltage greater than 1.25 V.
- What is the operating temperature range of the TPS3307-33DRG4? The operating temperature range is -40°C to +85°C.
- What is the maximum supply current of the TPS3307-33DRG4? The maximum supply current is 40 µA.
- Does the TPS3307-33DRG4 require an external capacitor for the power-on reset? No, it does not require an external capacitor for the power-on reset.
- In what packages is the TPS3307-33DRG4 available? It is available in MSOP-8 and SO-8 packages.
- What is the threshold voltage for the SENSE1 input of the TPS3307-33DRG4? The threshold voltage for SENSE1 is typically 4.55 V.
- Can the TPS3307-33DRG4 be used in military applications? Yes, it is suitable for military applications due to its robust and reliable performance.
- How does the RESET output work on the TPS3307-33DRG4? The RESET output is asserted when the supply voltage VDD becomes higher than 1.1 V and remains active as long as the SENSE inputs are below their respective threshold voltages.
- What is the purpose of the adjustable SENSE input on the TPS3307-33DRG4? The adjustable SENSE input allows for the monitoring of any supply voltage greater than 1.25 V using an external resistor divider.
