Overview
The TPS3809K33DBVTG4 is a 3-pin supply voltage supervisor from Texas Instruments, designed to provide circuit initialization and timing supervision primarily for DSPs and processor-based systems. This device is part of the TPS3809 family and is characterized by its precision supply voltage monitoring capabilities. Although the TPS3809 series has been discontinued, it remains relevant for existing designs and legacy systems. The TPS3809K33DBVTG4 is specifically tailored for a nominal supply voltage of 3.3V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBV) | |
| Body Size | 2.90 mm × 1.60 mm | |
| Supply Voltage (VDD) | 2 to 6 | V |
| Threshold Voltage (VIT) | 2.93 V (typical) | V |
| Supply Current (IDD) | 9 μA (typical) at VDD = 2 V | μA |
| Operating Temperature Range | –40°C to +85°C | °C |
| Reset Delay Time (td) | 120 to 280 ms | ms |
| Maximum Low-Output Current (IOL) | 5 mA | mA |
| Maximum High-Output Current (IOH) | –5 mA | mA |
Key Features
- Precision supply voltage monitoring for 3.3V.
- 3-pin SOT-23 package.
- Low supply current of 9 μA (typical).
- Pin-for-pin compatible with MAX809.
- No external components required.
- Internal timer for proper system reset.
- Active low RESET output with push-pull stage.
- Operating temperature range: –40°C to +85°C.
Applications
- Factory automation.
- Wireless speakers.
- Motor drives.
- Servers.
- Appliances.
- Electricity meters.
- Building automation.
Q & A
- What is the primary function of the TPS3809K33DBVTG4?
The primary function is to provide circuit initialization and timing supervision for DSPs and processor-based systems by monitoring the supply voltage.
- What is the nominal supply voltage for the TPS3809K33DBVTG4?
The nominal supply voltage is 3.3V.
- What is the typical supply current of the TPS3809K33DBVTG4?
The typical supply current is 9 μA.
- What is the operating temperature range of the TPS3809K33DBVTG4?
The operating temperature range is –40°C to +85°C.
- Does the TPS3809K33DBVTG4 require external components for operation?
No, it does not require external components.
- What is the reset delay time of the TPS3809K33DBVTG4?
The reset delay time is between 120 ms to 280 ms.
- What is the maximum low-output current of the TPS3809K33DBVTG4?
The maximum low-output current is 5 mA.
- Is the TPS3809K33DBVTG4 still in production?
No, the TPS3809 series has been discontinued by Texas Instruments.
- What alternative device can be used in place of the TPS3809K33DBVTG4?
The TLV809E is an alternative device with the same pins, functions, and electrical parameters.
- What are some common applications of the TPS3809K33DBVTG4?
Common applications include factory automation, wireless speakers, motor drives, servers, appliances, electricity meters, and building automation.
