Overview
The TPS2121RUXT, produced by Texas Instruments, is a Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) designed for systems with multiple power sources. This device automatically detects, selects, and seamlessly transitions between available inputs, making it ideal for applications requiring reliable and efficient power management.
The TPS2121 supports a wide operating range from 2.8 V to 22 V and features an absolute maximum input voltage of 24 V. It is packaged in a 12-VFQFN package, ensuring compact and efficient integration into various systems.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 2.8 V to 22 V |
| Absolute Maximum Input Voltage | 24 V |
| RON Resistance (Typical) | 56 mΩ |
| Output Current Limit | 1 A – 4.5 A |
| Overvoltage Supervisor Accuracy | < ±5% |
| Priority Supervisor Accuracy | < ±5% |
| External Voltage Reference Accuracy | <1% |
| Quiescent Current (Enabled Input) | 200 µA (Typical) |
| Quiescent Current (Disabled Input) | 10 µA (Typical) |
| Output Switchover Time (Typical) | 5 µs |
| Package Type | 12-VFQFN |
Key Features
- Wide operating range: 2.8 V to 22 V
- Low RON resistance: 56 mΩ (typical)
- Adjustable overvoltage supervisor (OVx) with accuracy < ±5%
- Adjustable priority supervisor (PR1) with accuracy < ±5%
- Supports external voltage reference (CP2) with accuracy <1%
- Output current limit adjustable from 1 A to 4.5 A
- Channel status indication (ST)
- Adjustable input settling time (SS) and output soft start time (SS)
- Fast output switchover time: 5 µs (typical)
- Low quiescent current: 200 µA (enabled input), 10 µA (disabled input)
- Manual input source selection and over temperature protection (OTP)
Applications
The TPS2121RUXT is well-suited for a variety of systems that require multiple power sources, including:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Telecommunication equipment
- Any application requiring reliable and seamless power source switching
Q & A
- What is the operating voltage range of the TPS2121RUXT?
The operating voltage range is from 2.8 V to 22 V.
- What is the typical RON resistance of the TPS2121RUXT?
The typical RON resistance is 56 mΩ.
- What is the maximum output current limit of the TPS2121RUXT?
The maximum output current limit is 4.5 A.
- Does the TPS2121RUXT support external voltage reference?
- What is the quiescent current from an enabled input?
The quiescent current from an enabled input is 200 µA (typical).
- How fast is the output switchover time?
The output switchover time is 5 µs (typical).
- Does the TPS2121RUXT have over temperature protection?
- Can the input settling time and output soft start time be adjusted?
- What package type is the TPS2121RUXT available in?
- What are some common applications for the TPS2121RUXT?
