Overview
The TPS3847108DBVR is a high-performance, ultralow-power voltage monitor from Texas Instruments, optimized for portable and battery-operated devices. With its advanced features, including ultralow quiescent current (380 nA), wide supply voltage range (4.5 V to 18 V), and high threshold accuracy (±2.5%), this device ensures robust power supply monitoring for sensitive electronics.
The TPS3847 family consists of wide operating voltage, ultralow-current devices that monitor the voltage at the supply pin. The device asserts an active-low reset signal whenever the VCC supply voltage drops below the factory-trimmed reset threshold voltage. The reset output remains asserted for 20 ms(max)after the VCC voltage rises above the threshold voltage.
The ultralow current consumption f 380 nA combined with 18-V capability makes the TPS3847 ideal for use in low-power and portable applications.
The TPS3847 features precision, factory-trimmed threshold voltages and extremely low-power operation. The TPS3847 is available in an industry. standard, 5-pin, SOT package.
Key Features
· Ultralow Supply Current: Operating at 380 nA, ideal for energy-constrained systems.
· Wide Voltage Range: Supports 4.5 V to 18 V, suitable for diverse power configurations.
· High Threshold Accuracy: Factory-trimmed thresholds with ±2.5% precision.
· Push-Pull Output: Eliminates the need for external pull-up resistors.
· Built-in Hysteresis: Enhances noise immunity for stable operation.
· Extended Temperature Range: Functional up to 105°C, ideal for industrial conditions.
· 20-ms Maximum Reset Delay: Ensures reliable system resets during power transitions.
Applications
· Portable Devices: Power monitoring for wearables, handheld electronics, and IoT sensors.
· Computing Systems: Ensures stable operation for desktops, notebooks, and ultrabooks.
· Industrial Systems: Reliable monitoring in harsh environments and factory automation.
· Servers and Networking: Protects critical infrastructure during power anomalies.
· Security Systems: Maintains uninterrupted operation for alarms and surveillance devices.
Compatible Component Series for TPS3847108DBVR
1.TPS6212 (Step-Down DC-DC Converter)
· Category: Power management ICs.
· Parameters: Supports input voltage from 3 V to 17 V with a low quiescent current of 11 µA.
· Applications: Ideal for enabling/disabling power converters in battery-operated devices.
· Recommended Model: TPS62120DSGR.
· Integration: The TPS3847108DBVR can disable the TPS62120 when supply voltage drops below the threshold, conserving battery power.
2.ADS1115 (Precision ADC)
· Category: Analog-to-Digital Converter.
· Parameters: 16-bit resolution, operates from 2 V to 5.5 V.
· Applications: Monitoring voltage levels in industrial sensors and battery systems.
· Recommended Model: ADS1115IRUGT.
· Integration: Monitored by TPS3847108DBVR to ensure precise ADC operation during power fluctuations.
3.LM2936 (Low Dropout Regulator)
· Category: Voltage regulators.
· Parameters: Input range 5.5 V to 40 V, ultra-low quiescent current (15 µA).
· Applications: Maintains stable voltage for low-power systems.
· Recommended Model: LM2936Z-5.0.
· Integration: Paired with TPS3847108DBVR to monitor input power stability.
4.MSP430 (Microcontroller)
· Category: Microcontrollers.
· Parameters: Operates from 1.8 V to 3.6 V, ultralow-power modes.
· Applications: Controls and processes system data in portable electronics.
· Recommended Model: MSP430FR6989.
· Integration: TPS3847108DBVR ensures a proper reset mechanism for safe MCU operation.
5.INA333 (Instrumentation Amplifier)
· Category: Precision amplifiers.
· Parameters: Operates with supply voltages as low as 1.8 V.
· Applications: Biomedical and sensor signal amplification.
· Recommended Model: INA333AIDR.
· Integration: TPS3847108DBVR ensures the amplifier operates under optimal power conditions.
About Texas Instruments
Texas Instruments Incorporated (TI) is an American multinational semiconductor company founded in 1951 and headquartered in Dallas, Texas. It is one of the top 10 semiconductor companies in the world by sales. The company focuses on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces digital light processing (DLP) technology and educational technology products, including calculators, microcontrollers, and multi-core processors. In the stock market, Texas Instruments is often viewed as an indicator of the entire semiconductor and electronics industry, as the company sells products to more than 100,000 customers.
