Overview
The TPS3809J25DBVR 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, which offers precision supply voltage monitoring for various voltage levels. Although the TPS3809 series is now obsolete, it remains relevant for existing designs and legacy systems. The TPS3809J25DBVR is pin-for-pin compatible with the MAX809 and has a similar functionality to the newer TLV809E device.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 2 to 6 | V |
| Threshold Voltage (VIT) | 2.25 | V |
| Supply Current (IDD) | 9 to 25 | μA |
| Operating Temperature Range | –40 to +85 | °C |
| Package Type | SOT-23 (DBV) | |
| Body Size | 2.90 mm × 1.60 mm | |
| Maximum Low-Output Current (IOL) | 5 | mA |
| Maximum High-Output Current (IOH) | –5 | mA |
| Delay Time (td) | 120 to 280 | ms |
Key Features
- 3-pin SOT-23 package for compact design.
- Precision supply voltage monitoring with fixed sense-threshold voltage.
- Low supply current of 9 μA (typical).
- No external components required for operation.
- Internal timer for proper system reset with a delay time of 120 to 280 ms.
- Active low RESET signal with push-pull output stage.
- 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 TPS3809J25DBVR? The primary function is to provide circuit initialization and timing supervision for DSPs and processor-based systems.
- What is the typical supply current of the TPS3809J25DBVR? The typical supply current is 9 μA.
- What is the threshold voltage for the TPS3809J25DBVR? The threshold voltage is 2.25 V.
- What is the operating temperature range of the TPS3809J25DBVR? The operating temperature range is –40°C to +85°C.
- What package type is the TPS3809J25DBVR available in? It is available in a 3-pin SOT-23 (DBV) package.
- Does the TPS3809J25DBVR require external components for operation? No, it does not require external components.
- What is the delay time for the RESET signal to deassert after VDD rises above the threshold voltage? The delay time is between 120 to 280 ms.
- Is the TPS3809J25DBVR still in production? No, the TPS3809 series is obsolete and no longer in production.
- What is the recommended bypass capacitor for the supply terminals? A 0.1-μF ceramic capacitor is recommended.
- What are some common applications for the TPS3809J25DBVR? Common applications include factory automation, wireless speakers, motor drives, servers, appliances, electricity meters, and building automation.
