Overview
The TPS2115ADRBT, manufactured by Texas Instruments, is a two-input, one-output power multiplexer designed for seamless transition between two power supplies. This device is part of the TPS211xA family, which includes extensive protection circuitry and advanced features to simplify power multiplexer applications. It operates within a wide voltage range of 2.8 V to 5.5 V and can deliver up to 2 A of current, depending on the package. The TPS2115ADRBT is particularly useful in systems that require reliable and efficient power management, such as portable electronics and battery-powered devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | TSSOP-8, SON-8 | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Input Voltage Range (IN1, IN2) | 2.8 to 5.5 | V |
| Output Voltage Range (OUT) | 2.8 to 5.5 | V |
| Continuous Output Current | 1.5 A (TPS2115APW), 2.5 A (TPS2115ADRB) | A |
| Drain-Source On-State Resistance (rDS(on)) | 84 mΩ (Typ) | mΩ |
| Standby Current | 0.5 µA (Typ) | µA |
| Operating Current | 55 µA (Typ) | µA |
| Current Limit Adjustment Range | 0.63 to 1.25 A | A |
| Thermal Shutdown | Yes | - |
| ESD Ratings (Human Body Model, Charge Device Model) | 2 kV, 500 V | - |
Key Features
- Two-input, one-output power multiplexer with low rDS(on) switches
- Reverse and cross-conduction blocking
- Wide operating voltage range: 2.8 V to 5.5 V
- Low standby current: 0.5 µA (Typ)
- Low operating current: 55 µA (Typ)
- Adjustable current limit
- Controlled output voltage transition times to limit inrush current and minimize output voltage hold-up capacitance
- CMOS- and TTL-compatible control inputs
- Manual and auto-switching operating modes
- Thermal shutdown protection
- Available in TSSOP-8 and 3-mm × 3-mm SON-8 packages
Applications
- Portable electronics such as laptops, tablets, and smartphones
- Personal digital assistants (PDAs)
- Digital cameras
- Modems and routers
- Cell phones and digital radios
- MP3 players and other portable audio devices
- Battery-powered systems requiring seamless power supply transitions
Q & A
- What is the primary function of the TPS2115ADRBT?
The TPS2115ADRBT is a two-input, one-output power multiplexer designed to seamlessly switch between two power supplies.
- What is the operating voltage range of the TPS2115ADRBT?
The operating voltage range is from 2.8 V to 5.5 V.
- What is the typical drain-source on-state resistance (rDS(on)) of the TPS2115ADRBT?
The typical rDS(on) is 84 mΩ.
- How is the current limit adjusted in the TPS2115ADRBT?
The current limit is adjusted using a resistor (RILIM) connected from the ILIM pin to GND, with the current limit set to 250/RILIM or 500/RILIM for different configurations.
- What are the available package options for the TPS2115ADRBT?
The device is available in TSSOP-8 and 3-mm × 3-mm SON-8 packages.
- Does the TPS2115ADRBT have thermal shutdown protection?
Yes, it includes thermal shutdown protection.
- What are the ESD ratings for the TPS2115ADRBT?
The ESD ratings are 2 kV for the Human Body Model and 500 V for the Charge Device Model.
- Can the TPS2115ADRBT operate in both manual and auto-switching modes?
Yes, it supports both manual and auto-switching operating modes.
- What is the typical standby current of the TPS2115ADRBT?
The typical standby current is 0.5 µA.
- What is the typical operating current of the TPS2115ADRBT?
The typical operating current is 55 µA.
