Overview
The TPS2115APWR is a power multiplexer IC produced by Texas Instruments. It is part of the TPS211xA family, designed to enable seamless transition between two power supplies, such as a battery and a wall adapter. This device operates within a voltage range of 2.8 V to 5.5 V and can deliver up to 1.25 A of current. The TPS2115APWR features extensive protection circuitry, including user-programmable current limiting, thermal protection, inrush current control, and reverse and cross-conduction blocking, making it ideal for various power multiplexer applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | TSSOP-8 (PW) | |
| Pins | 8 | |
| Operating Temperature Range | -40 to 85 | °C |
| Input Voltage Range (IN1, IN2) | 2.8 to 5.5 | V |
| Output Current (Continuous) | 1.25 | A |
| Drain-Source On-State Resistance (rDS(on)) | 84 | mΩ |
| Standby Current | 0.5 | µA |
| Operating Current | 55 | µA |
| Current Limit Adjustment Range | 0.63 to 1.25 | A |
| Thermal Shutdown | Yes |
Key Features
- Two-Input, One-Output Power Multiplexer with low rDS(on) switches (84 mΩ typical for TPS2115A)
- Reverse and Cross-Conduction Blocking
- Wide Operating Voltage Range: 2.8 V to 5.5 V
- Low Standby Current: 0.5 µA typical
- Low Operating Current: 55 µA typical
- 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
- Available in TSSOP-8 and 3-mm × 3-mm SON-8 Packages
Applications
- Personal Computers (PCs)
- Personal Digital Assistants (PDAs)
- Digital Cameras
- Modems
- Cell Phones
- Digital Radios
- MP3 Players
- Systems requiring seamless transition between two power supplies (e.g., battery and wall adapter)
- Systems with multiple battery packs for extended run time
Q & A
- What is the operating voltage range of the TPS2115APWR?
The operating voltage range is 2.8 V to 5.5 V for both input power supplies (IN1 and IN2).
- What is the typical on-state resistance (rDS(on)) of the TPS2115APWR?
The typical on-state resistance (rDS(on)) is 84 mΩ.
- What are the key protection features of the TPS2115APWR?
The key protection features include user-programmable current limiting, thermal protection, inrush current control, reverse and cross-conduction blocking.
- Can the TPS2115APWR operate in both manual and automatic switching modes?
Yes, the TPS2115APWR supports both manual and automatic switching modes.
- What is the maximum continuous output current of the TPS2115APWR?
The maximum continuous output current is 1.25 A.
- What type of packages is the TPS2115APWR available in?
The TPS2115APWR is available in TSSOP-8 and 3-mm × 3-mm SON-8 packages.
- How does the current limit adjustment work on the TPS2115APWR?
The current limit can be adjusted using a resistor (R(ILIM)) connected from the ILIM pin to GND. The current limit is set to 250/R(ILIM) for the TPS2115A.
- What is the standby current of the TPS2115APWR?
The standby current is typically 0.5 µA.
- Does the TPS2115APWR have thermal shutdown protection?
Yes, the TPS2115APWR includes thermal shutdown protection.
- What are some common applications for the TPS2115APWR?
Common applications include PCs, PDAs, digital cameras, modems, cell phones, digital radios, and MP3 players.
