Overview
The TPS3808G12DRVR from Texas Instruments is a highly integrated voltage supervisor designed to monitor supply voltages and ensure dependable operation within electronic systems. This device is part of the TPS3808 family of microprocessor supervisory circuits, which are tailored for low-power applications. It effectively prevents system malfunction caused by insufficient voltage levels by providing a precise reset output signal for a range of digital circuits and microcontrollers.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 1.0V to 5.5V |
| Supply Current | 1.0µA typical |
| Voltage Threshold Accuracy | ±2.0% |
| Temperature Range | –40°C to +125°C |
| Reset Threshold Options | 1.0V, 1.2V, 1.8V, 2.5V, 3.0V, and 5.0V |
| Reset Delay Time | 2ms max |
| RESET Output Configuration | Open Collector |
| Package Types | SOT-23, 2-mm × 2-mm WSON |
Key Features
- Ultra-low supply current: 1.0µA typical, reducing overall power draw in battery-operated applications.
- Precision voltage monitoring: ±2.0% voltage threshold accuracy ensures reliable system operation.
- Multiple reset threshold options: Available for various standard voltage rails from 1.0V to 5.0V.
- Fast reset active output: Maximum delay time of 2ms for prompt system recovery.
- Open collector output: Allows for versatile application requirements.
- Buggy power-on reset and power-down reset for enhanced stability.
- Compact 5-pin configuration: Easy integration into various circuit designs.
Applications
- Microcontroller Power Supervisory Circuits
- Battery-Powered Devices
- Automotive Systems
- Industrial Control Systems
- Consumer Electronics
- Programmable Logic Controllers (PLCs)
- FPGA Voltage Monitoring
- Portable Medical Devices
Q & A
- What is the minimum operating voltage for the TPS3808G12DRVR? The minimum operating voltage is 1.0V.
- Can this device be used in automotive applications? Yes, the TPS3808G12DRVR is specified for a temperature range of –40°C to +125°C, making it suitable for automotive use.
- Is the reset output totem pole or open collector? The RESET output is an open collector configuration, allowing for greater circuit flexibility.
- How does the TPS3808G12DRVR achieve low power consumption? The device features a supply current as low as 1.0µA, which significantly reduces the overall power draw in battery-operated applications.
- What is the reset delay time for the TPS3808G12DRVR? The maximum reset delay time is 2ms, ensuring prompt system recovery upon voltage restoration.
- What are the available package types for the TPS3808G12DRVR? The device is available in SOT-23 and 2-mm × 2-mm WSON packages.
- How does the TPS3808G12DRVR monitor system voltages? The device continuously monitors the voltage level supplied to the system and triggers a reset signal when the supply voltage drops below a predefined threshold or when the manual reset (MR) pin drops to a logic low.
- What is the precision of the voltage threshold for the TPS3808G12DRVR? The device achieves a precision voltage threshold accuracy of ±2.0%.
- Can the reset delay time be adjusted? Yes, the reset delay time can be adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor.
- What are some alternative models if the TPS3808G12DRVR does not suit the application requirements? Alternative models include the TPS3808G12DRVT and the TPS3807 series, which offer similar functionality but with different reset thresholds and options.
