Overview
The TPS3809K33DBVR is a 3-pin voltage supervisor (reset IC) produced by Texas Instruments. This device is part of the TPS3809 family of supervisory circuits, designed to provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems. The TPS3809K33DBVR is housed in a SOT-23 (DBV) package and is characterized by its precision supply voltage monitoring capabilities for voltages of 2.5 V, 3 V, 3.3 V, and 5 V. It features an active-low, push-pull reset output and an internal timer to ensure proper system reset. The device operates over a temperature range of –40°C to 85°C and is pin-for-pin compatible with the MAX 809.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBV) | - |
| Pins | 3 | - |
| Operating Temperature Range | –40 to 85 | °C |
| Supply Voltage (VDD) | 2 to 6 | V |
| Threshold Voltage (VIT) | 2.93 V (typical for TPS3809K33) | V |
| Supply Current (IDD) | 9 µA (typical at VDD = 2 V) | µA |
| Reset Delay Time (td) | 200 ms (typical) | ms |
| High-Level Output Voltage (VOH) | VDD – 0.4 V (at IOH = –2 mA) | V |
| Low-Level Output Voltage (VOL) | 0.4 V (at IOL = 2 mA) | V |
Key Features
- 3-pin SOT-23 package
- Supply current of 9 µA (typical)
- Precision supply voltage monitor for 2.5 V, 3 V, 3.3 V, and 5 V
- Pin-for-pin compatible with MAX 809
- Active-low, push-pull reset output
- Internal timer for reset delay (200 ms typical)
- No external components required
- 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 TPS3809K33DBVR?
The primary function of the TPS3809K33DBVR is to provide circuit initialization and timing supervision, particularly for DSPs and processor-based systems.
- What is the package type and pin count of the TPS3809K33DBVR?
The TPS3809K33DBVR is housed in a 3-pin SOT-23 (DBV) package.
- What are the supported supply voltages for the TPS3809K33DBVR?
The device supports supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- What is the typical reset delay time for the TPS3809K33DBVR?
The typical reset delay time is 200 ms.
- Is the TPS3809K33DBVR compatible with other devices?
Yes, it is pin-for-pin compatible with the MAX 809.
- What is the operating temperature range of the TPS3809K33DBVR?
The device operates over a temperature range of –40°C to 85°C.
- What is the typical supply current of the TPS3809K33DBVR?
The typical supply current is 9 µA at VDD = 2 V.
- Does the TPS3809K33DBVR require external components for operation?
No, the device does not require external components for operation.
- What are some common applications of the TPS3809K33DBVR?
Common applications include factory automation, wireless speakers, motor drives, servers, appliances, electricity meters, and building automation.
- Is the TPS3809K33DBVR still in production?
No, the TPS3809 family has been discontinued by Texas Instruments, but alternatives like the TLV809E are available.
