Overview
The TPS2113APWR from Texas Instruments is a power multiplexer designed to enable seamless transition between two power supplies. This device is particularly useful in applications where dual power sources are required, such as in battery-powered devices or systems with multiple power inputs. The TPS2113APWR operates in an auto-switching mode, automatically selecting the higher of the two input voltages to ensure continuous power supply to the output.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage Range (IN1, IN2, EN, VSNS, ILIM) | -0.3 | 6 | V | |
| Output Voltage Range (VO(OUT), VO(STAT)) | -0.3 | 6 | V | |
| Continuous Output Current (IO(OUT)) | 1.25 | 2.5 (TJ ≤ 105°C) | A | |
| On-State Resistance (rDS(on)) | 84 | 120 | 140 | mΩ |
| Operating Junction Temperature (TJ) | -40 | 125 | °C | |
| Human Body Model (HBM) ESD Protection | 2 | kV | ||
| Charged Device Model (CDM) ESD Protection | 500 | V | ||
| Current Limit Adjustment Range | 0.63 | 1.25 | A |
Key Features
- Two-input, one-output power multiplexer with low rDS(on) switches (84 mΩ typical for TPS2113A)
- Reverse and cross-conduction blocking to prevent backflow of current between the two input power sources
- Wide operating voltage range: 2.8 V to 5.5 V
- Low standby current: 0.5 µA typical, and low operating current: 55 µA typical
- Adjustable current limit using an external resistor (RILIM)
- Controlled output voltage transition times to limit inrush current and minimize output voltage hold-up capacitance
- CMOS and TTL compatible control inputs
- Auto-switching operating mode to automatically select the higher of the two input voltages
- Thermal shutdown with a threshold of 135°C and recovery at 125°C
- Available in a TSSOP-8 package
Applications
- Personal Computers (PCs)
- Personal Digital Assistants (PDAs)
- Digital Cameras
- Modems
- Cell phones
- Digital Radios
- MP3 Players
Q & A
- What is the primary function of the TPS2113APWR?
The TPS2113APWR is a power multiplexer that enables seamless transition between two power supplies, automatically selecting the higher of the two input voltages.
- What is the operating voltage range of the TPS2113APWR?
The operating voltage range is from 2.8 V to 5.5 V.
- What is the typical on-state resistance of the TPS2113APWR?
The typical on-state resistance is 84 mΩ.
- How is the current limit adjusted in the TPS2113APWR?
The current limit is adjusted using an external resistor (RILIM) connected to the ILIM pin.
- What is the thermal shutdown threshold of the TPS2113APWR?
The thermal shutdown threshold is 135°C, with recovery at 125°C.
- What types of control inputs are compatible with the TPS2113APWR?
The device is compatible with both CMOS and TTL control inputs.
- What is the typical standby current of the TPS2113APWR?
The typical standby current is 0.5 µA.
- What is the maximum continuous output current of the TPS2113APWR?
The maximum continuous output current is 1.25 A, and up to 2.5 A when the junction temperature (TJ) is less than or equal to 105°C.
- What package types are available for the TPS2113APWR?
The device is available in a TSSOP-8 package.
- What are some common applications of the TPS2113APWR?
Common applications include PCs, PDAs, digital cameras, modems, cell phones, digital radios, and MP3 players.
