Overview
The TPS3809K33DBVT 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 available in a 3-pin SOT-23 package. It is characterized by its precision supply voltage monitoring capabilities for various voltage levels, including 2.5 V, 3 V, 3.3 V, and 5 V. The TPS3809K33DBVT is specifically set for a 3.3 V nominal supply voltage with a threshold voltage of 2.93 V. The device ensures proper system reset through an internal timer and does not require any external components for operation.
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) | 2.87 to 2.99 | V |
| Supply Current (IDD) | 9 to 25 | μA |
| Operating Temperature Range | –40°C to +85°C | |
| Delay Time (td) | 120 to 280 ms | |
| Low-Level Output Voltage (VOL) | 0.3 to 0.4 | V |
| High-Level Output Voltage (VOH) | VDD – 0.2 to VDD – 0.4 | V |
Key Features
- Precision supply voltage monitoring for 3.3 V with a fixed sense-threshold voltage.
- 3-pin SOT-23 package for compact design.
- Low supply current of 9 μA (typical).
- Internal timer for ensuring proper system reset.
- No external components required for operation.
- Pin-for-pin compatible with MAX 809.
- Operating temperature range of –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 TPS3809K33DBVT?
The primary function is to provide circuit initialization and timing supervision for DSPs and processor-based systems by monitoring the supply voltage and ensuring proper system reset.
- What is the package type and size of the TPS3809K33DBVT?
The device is packaged in a 3-pin SOT-23 package with a body size of 2.90 mm × 1.60 mm.
- What is the threshold voltage for the TPS3809K33DBVT?
The threshold voltage is 2.93 V for the TPS3809K33DBVT.
- What is the typical supply current of the TPS3809K33DBVT?
The typical supply current is 9 μA.
- Does the TPS3809K33DBVT require any external components for operation?
No, the device does not require any external components for operation.
- What is the operating temperature range of the TPS3809K33DBVT?
The operating temperature range is –40°C to +85°C.
- What is the delay time (td) for the TPS3809K33DBVT?
The delay time ranges from 120 to 280 ms.
- Is the TPS3809K33DBVT pin-for-pin compatible with other devices?
Yes, it is pin-for-pin compatible with the MAX 809.
- What are some common applications for the TPS3809K33DBVT?
Common applications include factory automation, wireless speakers, motor drives, servers, appliances, electricity meters, and building automation.
- Is the TPS3809K33DBVT still in production?
No, the TPS3809K33DBVT is obsolete and has been discontinued by Texas Instruments.
