Overview
The TPS3808G33DBVR is a power-on reset generator produced by Texas Instruments. This device is designed to provide a reliable and adjustable reset function for various electronic systems. It features a precision reference that ensures high accuracy in voltage threshold detection and reset timing. The TPS3808G33DBVR is particularly suited for battery-powered applications due to its very low quiescent current.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage (VDD) | 1.7 V to 6.5 V | - |
| Quiescent Current (IDD) | 2.4 μA (typical at VDD = 3.3 V) | RESET not asserted, MR, RESET, CT open |
| Power-up Reset Voltage (VPOR) | 0.8 V | VOL (max) = 0.2 V, I_RESET = 15 μA |
| Negative-going Input Threshold Accuracy (VIT) | ±0.5% for VIT ≤ 3.3 V | -40°C < TJ < 125°C |
| Reset Delay Time | 1.25 ms to 10 s (user-adjustable) | - |
| Package Options | SOT-23 (6-pin), 2-mm × 2-mm WSON (6-pin) | - |
| Operating Temperature Range | -40°C to 125°C (TJ) | - |
Key Features
- Power-on reset generator with adjustable delay time from 1.25 ms to 10 s.
- Very low quiescent current of 2.4 μA typical, making it suitable for battery-powered applications.
- Precision reference for high accuracy in voltage threshold detection (±0.5% for VIT ≤ 3.3 V).
- User-adjustable reset delay time using an external capacitor.
- Available in SOT-23 and 2-mm × 2-mm WSON packages.
- Fully specified over a temperature range of -40°C to 125°C (TJ).
Applications
- Battery-powered devices due to its low quiescent current.
- Embedded systems requiring reliable power-on reset functionality.
- Industrial control systems where precise reset timing is crucial.
- Automotive and aerospace applications where temperature stability is important.
- Consumer electronics requiring robust power management.
Q & A
- What is the primary function of the TPS3808G33DBVR?
The primary function of the TPS3808G33DBVR is to act as a power-on reset generator with adjustable delay time.
- What is the typical quiescent current of the TPS3808G33DBVR?
The typical quiescent current is 2.4 μA at VDD = 3.3 V.
- How can the reset delay time be adjusted?
The reset delay time can be adjusted by connecting the CT pin to an external capacitor or by using specific resistor configurations.
- What are the available package options for the TPS3808G33DBVR?
The device is available in SOT-23 (6-pin) and 2-mm × 2-mm WSON (6-pin) packages.
- What is the operating temperature range of the TPS3808G33DBVR?
The operating temperature range is -40°C to 125°C (TJ).
- What is the accuracy of the negative-going input threshold for VIT ≤ 3.3 V?
The accuracy is ±0.5% for VIT ≤ 3.3 V.
- How is the power-up reset voltage specified?
The power-up reset voltage (VPOR) is specified as 0.8 V with VOL (max) = 0.2 V and I_RESET = 15 μA.
- Can the TPS3808G33DBVR be used in automotive applications?
Yes, it can be used in automotive applications due to its temperature stability and robust power management capabilities.
- What types of systems benefit from the TPS3808G33DBVR's low quiescent current?
Battery-powered devices and other low-power systems benefit significantly from the TPS3808G33DBVR's low quiescent current.
- How does the TPS3808G33DBVR ensure high accuracy in voltage threshold detection?
The device uses a precision reference to ensure high accuracy in voltage threshold detection.
