Overview
The TPS3838K33DBVTG4, produced by Texas Instruments, is a nano-power supervisory circuit designed for circuit initialization and timing supervision in digital signal processors (DSP) and processor-based systems. This device is part of the TPS3836, TPS3837, and TPS3838 family, each differing in their reset output configurations. The TPS3838K33DBVTG4 specifically features an active-low, open-drain reset output. It is optimized for low-power applications, making it suitable for battery-powered and portable devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Current | 220 nA | |
| Precision Supply Voltage Supervision Range | 1.8 V, 2.5 V, 3.0 V, 3.3 V | |
| Power-on Reset Generator Delay Time | 10 ms or 200 ms | |
| Reset Output Type | Active-low, open-drain | |
| Manual Reset | Available | |
| Package Options | 5-pin SOT23, 2-mm × 2-mm SON-6 | |
| Temperature Range | –40°C to 85°C |
Key Features
- Nano-Power Consumption: The device operates with a typical supply current of 220 nA, making it highly efficient for battery-powered devices.
- Precision Supply Voltage Supervision: Monitors supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V with a fixed-sense threshold voltage set by an internal voltage divider.
- Selectable Reset Delay: Offers reset delay times of 10 ms or 200 ms, depending on the connection of the CT pin.
- Manual Reset Capability: Allows for manual system reset through the MR pin.
- Compact Packaging: Available in 5-pin SOT23 and 2-mm × 2-mm SON-6 packages.
- Broad Temperature Range: Operates over a temperature range of –40°C to 85°C.
Applications
- Digital Signal Processors (DSP) and Microcontrollers: Ideal for systems requiring precise voltage monitoring and reset functions.
- Portable and Battery-Powered Equipment: Suitable for devices where low power consumption is critical.
- Intelligent Instruments: Used in various measurement and control devices that require reliable power-on reset and voltage supervision.
- Wireless Communication Systems: Applicable in wireless devices that need efficient power management.
- Notebook Computers and Automotive Systems: Can be used in these applications due to its robust temperature range and low power consumption.
Q & A
- What is the typical supply current of the TPS3838K33DBVTG4?
The typical supply current is 220 nA.
- What are the available precision supply voltage supervision ranges for the TPS3838K33DBVTG4?
The device monitors supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- How can the reset delay time be adjusted on the TPS3838K33DBVTG4?
The reset delay time can be set to 10 ms or 200 ms by connecting the CT pin to GND or VDD, respectively.
- Does the TPS3838K33DBVTG4 have a manual reset feature?
- In what packages is the TPS3838K33DBVTG4 available?
- What is the operating temperature range of the TPS3838K33DBVTG4?
- What type of reset output does the TPS3838K33DBVTG4 have?
- Is the TPS3838K33DBVTG4 suitable for safety-critical applications?
- Can the TPS3838K33DBVTG4 be used in automotive systems?
- What is the power-on reset voltage for the TPS3838K33DBVTG4?
