Overview
The TPS2115PWR, produced by Texas Instruments, is a dual-input, single-output autoswitching power multiplexer. This device is designed to seamlessly switch between two power supplies, ensuring a reliable and efficient power management solution. It features low on-resistance switches, reverse and cross-conduction blocking, and adjustable current limiting, making it suitable for a variety of applications including PCs, PDAs, digital cameras, modems, cell phones, and more.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (IN1, IN2) | -0.3 | - | 6 | V |
| Output Voltage Range (OUT) | -0.3 | - | 6 | V |
| On-State Resistance (rDS(on)) | 84 | 110 | 140 | mΩ |
| Continuous Output Current | - | - | 1.5 | A |
| Current Limit Adjustment Range | 0.63 | - | 1.25 | A |
| Operating Junction Temperature | -40 | - | 125 | °C |
| Standby Current | - | 0.5 | - | μA |
| Operating Current | - | 55 | - | μA |
Key Features
- Two-input, one-output power multiplexer with low on-resistance switches (84 mΩ typical for TPS2115)
- Reverse and cross-conduction blocking to prevent backflow of current
- Wide operating voltage range: 2.8 V to 5.5 V
- Adjustable current limit using an external resistor (R(ILIM))
- Low standby current (0.5 μA typical) and low operating current (55 μA typical)
- Manual and automatic switching modes
- Switch status output (STAT) to indicate the active switch
- Slow slew rate during switch transitions to limit inrush current
Applications
- Personal Computers (PCs)
- Personal Digital Assistants (PDAs)
- Digital Cameras
- Modems
- Cell Phones
- Digital Radios and MP3 Players
- Systems requiring dual power supply switching, such as those using two battery packs
Q & A
- What is the typical on-state resistance of the TPS2115PWR?
The typical on-state resistance of the TPS2115PWR is 84 mΩ.
- What is the operating voltage range of the TPS2115PWR?
The operating voltage range is from 2.8 V to 5.5 V.
- How is the current limit adjusted on the TPS2115PWR?
The current limit is adjusted using an external resistor (R(ILIM)) connected to the ILIM pin.
- What is the maximum continuous output current of the TPS2115PWR?
The maximum continuous output current is 1.5 A.
- Does the TPS2115PWR support manual and automatic switching modes?
Yes, it supports both manual and automatic switching modes.
- How does the TPS2115PWR prevent reverse and cross-conduction?
The device features reverse and cross-conduction blocking to prevent backflow of current.
- What is the purpose of the STAT pin on the TPS2115PWR?
The STAT pin is an open-drain output that indicates the active switch status.
- How does the TPS2115PWR manage inrush current during switch transitions?
The device uses a slow slew rate during switch transitions to limit inrush current.
- What package options are available for the TPS2115PWR?
The TPS2115PWR is available in a TSSOP-8 package.
- What is the operating junction temperature range of the TPS2115PWR?
The operating junction temperature range is from -40°C to 125°C.
