Overview
The TPS3809K33DBVRG4 is a 3-pin supply voltage supervisor from Texas Instruments, designed primarily for circuit initialization and timing supervision in DSPs and processor-based systems. This device is part of the TPS3809 family, which offers precision supply voltage monitoring for various voltage levels including 2.5 V, 3 V, 3.3 V, and 5 V. It is pin-for-pin compatible with the MAX 809 and features an internal timer to ensure proper system reset. The TPS3809K33DBVRG4 operates over a temperature range of –40°C to 85°C and is available in a 3-pin SOT-23 package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 2.5, 3, 3.3, 5 | V |
| Supply Current (Iq) | 9 | μA |
| Operating Temperature Range | –40 to 85 | °C |
| Reset Threshold Accuracy | 2.2 % | % |
| Threshold Voltage (Typ) | 2.25, 2.64, 2.93, 4.55 | V |
| Time Delay (td) | 200 | ms |
| Output Driver Type / Reset Output | Active-low, Push-pull | |
| Package Type | SOT-23 (DBV) | |
| Maximum Low-Output Current (IOL) | 5 | mA |
| Maximum High-Output Current (IOH) | –5 | mA |
Key Features
- 3-pin SOT-23 package: Compact and widely used package format.
- Low supply current: Typical supply current of 9 μA, making it suitable for power-sensitive applications.
- Precision supply voltage monitor: Monitors supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V with high accuracy.
- Pin-for-pin compatible with MAX 809: Easy to replace or upgrade existing designs.
- Internal timer for reset delay: Ensures proper system reset with a delay time of 200 ms.
- No external components required: Simplifies the design and reduces component count.
- Wide operating temperature range: Operates from –40°C to 85°C, making it suitable for various environments.
Applications
- Factory automation: Used in industrial control systems and automation equipment.
- Wireless communication systems: Suitable for wireless speakers, routers, and other wireless devices.
- Portable/battery-powered equipment: Ideal for devices that require low power consumption.
- Programmable controls: Used in programmable logic controllers (PLCs) and other control systems.
- Intelligent instruments: Found in smart meters, intelligent sensors, and other intelligent devices.
- Industrial equipment: Used in various industrial applications including motor drives and servers.
- Notebook/desktop computers: Can be used in computer systems for voltage supervision.
- Automotive systems: Suitable for use in automotive electronics due to its wide temperature range.
Q & A
- What is the primary function of the TPS3809K33DBVRG4?
The primary function is to provide circuit initialization and timing supervision, especially for DSPs and processor-based systems.
- What are the monitored supply voltages for the TPS3809K33DBVRG4?
The device monitors supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- What is the typical supply current of the TPS3809K33DBVRG4?
The typical supply current is 9 μA.
- Is the TPS3809K33DBVRG4 pin-for-pin compatible with any other device?
Yes, it is pin-for-pin compatible with the MAX 809.
- What is the operating temperature range of the TPS3809K33DBVRG4?
The operating temperature range is from –40°C to 85°C.
- Does the TPS3809K33DBVRG4 require any external components for operation?
No, it does not require any external components.
- What is the reset delay time of the TPS3809K33DBVRG4?
The reset delay time is 200 ms.
- What type of output driver does the TPS3809K33DBVRG4 have?
The output driver is active-low, push-pull.
- What is the package type of the TPS3809K33DBVRG4?
The package type is SOT-23 (DBV).
- Is the TPS3809K33DBVRG4 RoHS compliant?
Yes, it is RoHS compliant.
