Overview
The TPS3808G30DBVR, produced by Texas Instruments, is a low-quiescent current microprocessor supervisory circuit. This device is designed to monitor system voltages and assert a RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin is driven low. The TPS3808 family is known for its high threshold accuracy and adjustable delay times, making it suitable for a wide range of applications, particularly in battery-powered and low-power systems.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package | SOT-23-6 | 6-pin Small Outline Transistor package |
| Operating Temperature | –40°C to 125°C (TJ) | Junction temperature range |
| Supply Voltage | 1.7 V to 6.5 V | Minimum and maximum supply voltage |
| Threshold Voltage | 2.79 V (for TPS3808G30DBVR) | Preset threshold voltage for this specific model |
| Quiescent Current | 2.4 μA typical | Low power consumption in standby mode |
| Reset Type | Active Low/Open Drain | Type of reset output signal |
| Reset Timeout | Adjustable/Selectable (1.25 ms to 10 s) | User-adjustable reset delay time |
| Number of Voltages Monitored | 1 | Single voltage monitoring channel |
| Mounting Type | Surface Mount | Type of mounting for the component |
Key Features
- Power-on Reset Generator: With adjustable delay time from 1.25 ms to 10 s.
- Low Quiescent Current: Typical 2.4 μA, making it suitable for battery-powered applications.
- High Threshold Accuracy: 0.5% typical for VIT ≤ 3.3 V.
- Fixed and Adjustable Threshold Voltages: Available for standard voltage rails from 0.9 V to 5 V and adjustable down to 0.4 V.
- Manual Reset (MR) Input: Allows for manual reset of the system.
- Open-Drain RESET Output: Compatible with various system configurations.
- Compact Packages: Available in SOT-23 and 2-mm × 2-mm WSON packages.
Applications
- DSP or Microcontroller Applications: Suitable for monitoring and resetting digital signal processors and microcontrollers.
- Notebook and Desktop Computers: Used in power management and reset circuits.
- PDAs and Hand-Held Products: Ideal for battery-powered devices requiring low power consumption.
- Portable and Battery-Powered Products: Enhances reliability in portable electronics.
- FPGA and ASIC Applications: Used in field-programmable gate arrays and application-specific integrated circuits.
Q & A
- What is the primary function of the TPS3808G30DBVR?
The primary function is to monitor system voltages and assert a RESET signal when the voltage drops below a preset threshold or when the manual reset pin is driven low.
- What is the typical quiescent current of the TPS3808G30DBVR?
The typical quiescent current is 2.4 μA.
- What are the available package types for the TPS3808G30DBVR?
The device is available in SOT-23 and 2-mm × 2-mm WSON packages.
- How can the reset delay time be adjusted?
The reset delay time can be adjusted by connecting the CT pin to an external capacitor, setting it to a fixed 300 ms by connecting CT to VDD with a resistor, or leaving CT open for a 20 ms delay.
- What is the operating temperature range of the TPS3808G30DBVR?
The operating temperature range is –40°C to 125°C (TJ).
- What is the threshold accuracy of the TPS3808G30DBVR?
The threshold accuracy is 0.5% typical for VIT ≤ 3.3 V.
- Can the threshold voltage be adjusted?
- What type of reset output does the TPS3808G30DBVR have?
The reset output is active low/open drain.
- In what types of applications is the TPS3808G30DBVR commonly used?
- Is the TPS3808G30DBVR RoHS compliant?
