Home > Industry Information > TPS3707-33DR
The TPS3707-33DR is a high-reliability, low-power window voltage supervisor / power-on reset IC from Texas Instruments. Belonging to the supervisor category within Power Management ICs, it is specifically designed to monitor the supply voltage of 3.3V systems. When the monitored voltage falls below its fixed threshold of 2.93V, it asserts a valid reset signal. After the supply recovers to a normal level, it maintains the reset signal for a minimum of 140ms, ensuring that microprocessors, microcontrollers, or digital systems can initialize reliably and begin stable operation. It is a critical component for enhancing system reliability during power-up and power-down events.
Category:Integrated Circuits (ICs);Power Management (PMIC);Supervisors
Manufacturer:Texas Instruments
Packaging:Tape & Reel (TR);Cut Tape (CT)
Part Status:Active
Type:Simple Reset/Power-On Reset
Number of Voltages Monitored:1
Voltage - Threshold:2.93V
Output:Push-Pull, Totem Pole
Reset Timeout:140ms Minimum
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
Base Product Number:TPS3707
Precise Fixed Threshold: The factory-preset threshold of 2.93V is optimized for monitoring 3.3V power rails, eliminating the need for external resistor divider networks, simplifying design, and saving space and cost.
Reliable Reset Timing: The reset output becomes active immediately when the voltage drops below the threshold. Upon power recovery, the built-in minimum 140ms delay ensures the monitored processor has ample time for a stable power-on reset and initialization sequence.
Push-Pull Output: The push-pull output stage can directly drive CMOS or TTL logic inputs, providing strong high and low levels without requiring an external pull-up resistor, enhancing noise immunity.
Low-Power Design: Consumes very low quiescent current during operation, making it ideal for battery-powered or always-on systems with minimal impact on overall system power consumption.
High Reliability: An industrial temperature range (-40°C to 85°C) ensures stable operation in harsh environments, making it a reliable choice for industrial and automotive applications.
Compact Package: Housed in a standard 8-pin SOIC package, facilitating soldering, automated assembly, and requiring small board area.
Microcontroller/Microprocessor Systems: Providing reliable power-on and undervoltage reset signals to MCUs/MPUs, preventing software crashes or data corruption.
Embedded Systems & Modules: Power supply monitoring in industrial control boards, data acquisition modules, and communication modules (e.g., Wi-Fi, Bluetooth).
Automotive Electronics: Monitoring power status for auxiliary processors in Body Control Modules and infotainment systems.
Networking & Communication Equipment: Providing reset functionality for control chips in routers, switches, and optical modules.
Consumer Electronics: Ensuring stable boot-up of the main controller in smart home devices, security cameras, and printers.
The TPS3707-33DR is a functionally dedicated and reliable power supply supervisor specifically for 3.3V systems. With its minimal external circuitry (often just a bypass capacitor) and fixed, precise threshold, it provides a “one-stop” solution for addressing power integrity issues in digital systems. Its core value lies in ensuring a deterministic, clean startup process for the system after a power anomaly, which is the foundation for long-term stable operation. For all embedded design engineers using 3.3V power supplies, the TPS3707-33DR is a fundamental, trustworthy chip that effectively enhances product robustness.
Industry Information
