Overview
The TPS3307-18DR is a micropower supply voltage supervisor from Texas Instruments, designed primarily for circuit initialization in DSP and processor-based systems. This device is part of the TPS3307 family, which monitors multiple independent supply voltages to ensure proper system operation. The TPS3307-18DR is particularly suited for systems requiring more than one supply voltage, such as 3.3V, 1.8V, and an adjustable voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC-8 | |
| Operating Temperature Range | -40°C to +85°C | °C |
| Supply Voltage Range | 2V to 6V | V |
| Maximum Supply Current | 40µA | µA |
| Power-On Reset Delay Time | 200ms (typical) | ms |
| RESET Output Threshold Voltage | VDD ≥ 1.1V | V |
| Sense Voltage Inputs | SENSE1, SENSE2, SENSE3 | |
| Manual Reset Input | MR (active-low) | |
| RESET Output Types | Active-low and active-high |
Key Features
- Triple supervisory circuits for monitoring three independent supply voltages (e.g., 3.3V, 1.8V, and an adjustable voltage)
- Power-on reset generator with a fixed delay time of 200ms, no external capacitor needed
- Temperature-compensated voltage reference
- Maximum supply current of 40µA
- Defined RESET output from VDD ≥ 1.1V
- Available in MSOP-8 and SO-8 packages
- Manual reset input (MR) for manual system reset
- Active-low and active-high RESET output options
Applications
- Industrial Equipment
- Programmable Controls
- Automotive Systems
- Portable/Battery Powered Equipment
- Intelligent Instruments
- Wireless Communication Systems
- Notebook/Desktop Computers
- DSP and Microcontroller/Microprocessor-based systems
Q & A
- What is the primary function of the TPS3307-18DR?
The TPS3307-18DR is a micropower supply voltage supervisor designed for circuit initialization in DSP and processor-based systems, monitoring multiple independent supply voltages.
- What are the typical supply voltage configurations monitored by the TPS3307-18DR?
The device can monitor configurations such as 3.3V/1.8V/adj, 3.3V/2.5V/adj, or 3.3V/5V/adj, with an adjustable SENSE input for any supply voltage >1.25V.
- What is the power-on reset delay time of the TPS3307-18DR?
The power-on reset delay time is typically 200ms, which starts after all SENSE inputs have risen above the threshold voltage.
- Does the TPS3307-18DR require an external capacitor for the power-on reset?
No, the TPS3307-18DR does not require an external capacitor for the power-on reset.
- What are the package options available for the TPS3307-18DR?
The device is available in either 8-pin MSOP or standard 8-pin SO packages.
- What is the operating temperature range of the TPS3307-18DR?
The operating temperature range is -40°C to +85°C.
- How does the manual reset input (MR) function on the TPS3307-18DR?
A low level at the MR input causes the RESET output to become active.
- What types of RESET outputs are available on the TPS3307-18DR?
The device includes both active-low and active-high RESET output options.
- What is the maximum supply current of the TPS3307-18DR?
The maximum supply current is 40µA.
- What are some typical applications for the TPS3307-18DR?
Typical applications include industrial equipment, programmable controls, automotive systems, portable/battery-powered equipment, intelligent instruments, wireless communication systems, and notebook/desktop computers.
