Overview
The TPS3838L30DBVR, produced by Texas Instruments, is a part of the TPS3836, TPS3837, and TPS3838 family of supervisory circuits. These devices are designed to provide circuit initialization and timing supervision, primarily for digital signal processors (DSP) and processor-based systems. The TPS3838L30DBVR specifically features an active-low, open-drain RESET output and is optimized for low power consumption, making it suitable for a variety of applications requiring precise supply voltage monitoring and reset functionality.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Current | 220 nA (typical) |
| Precision Supply Voltage Supervision Range | 1.8 V, 2.5 V, 3.0 V, and 3.3 V |
| Power-on Reset Generator Delay Time | 10 ms or 200 ms (selectable) |
| RESET Output Type | Active-low, open-drain |
| Manual Reset | Available |
| Package Type | 5-pin SOT23 (DBV) |
| Operating Temperature Range | –40°C to 85°C |
| Threshold Voltage (VIT) | 2.64 V (for TPS3838L30DBVR) |
Key Features
- Precision supply voltage supervision with fixed-sense threshold voltage set by an internal voltage divider
- Power-on reset generator with selectable delay times of 10 ms or 200 ms
- Active-low, open-drain RESET output
- Manual reset capability
- Low power consumption with a typical supply current of 220 nA
- Compact packaging options including 5-pin SOT23 and 2-mm × 2-mm SON-6 packages
Applications
The TPS3838L30DBVR is suitable for various applications requiring precise supply voltage monitoring and reset functionality, including:
- Digital signal processors (DSP) and processor-based systems
- Low-power embedded systems
- Industrial control systems
- Automotive electronics
- Consumer electronics requiring reliable power-on reset and voltage supervision
Q & A
- What is the typical supply current of the TPS3838L30DBVR?
The typical supply current is 220 nA
- What are the available supply voltage supervision ranges for the TPS3838L30DBVR?
The device supports supply voltage supervision ranges of 1.8 V, 2.5 V, 3.0 V, and 3.3 V
- What are the selectable delay times for the power-on reset generator?
The delay times are 10 ms or 200 ms, selectable based on the connection of the CT pin
- What type of RESET output does the TPS3838L30DBVR have?
The TPS3838L30DBVR has an active-low, open-drain RESET output
- Is manual reset available on the TPS3838L30DBVR?
- What are the packaging options for the TPS3838L30DBVR?
The device is available in 5-pin SOT23 (DBV) and 2-mm × 2-mm SON-6 packages
- What is the operating temperature range of the TPS3838L30DBVR?
The operating temperature range is –40°C to 85°C
- What is the threshold voltage (VIT) for the TPS3838L30DBVR?
The threshold voltage (VIT) is 2.64 V for the TPS3838L30DBVR
- For which types of systems is the TPS3838L30DBVR primarily designed?
The device is primarily designed for digital signal processors (DSP) and processor-based systems
- How does the power-on reset generator work?
The power-on reset generator asserts RESET when the supply voltage VDD becomes higher than 1.1 V and keeps it active until VDD rises above the threshold voltage VIT. The delay time starts after VDD rises above VIT
