Overview
The TPS2560DRCR, produced by Texas Instruments, is a dual-channel USB power switch designed for applications requiring precision current limiting and the ability to handle heavy capacitive loads and short circuits. This device is part of the TPS256x series and is particularly suited for use in USB ports, TVs, and phones. It features adjustable current limiting between 250 mA and 2.8 A per channel, making it versatile for various power distribution needs.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 10-Pin VSON (DRC) |
| Operating Temperature Range | -40°C to 125°C |
| Current Limit Range | 250 mA to 2.8 A (typ) |
| Current-Limit Accuracy | ± 7.5% at 2.8 A |
| Overcurrent Response Time | 3.5 µs (typ) |
| MOSFET Resistance | 44 mΩ |
| Operating Voltage Range | 2.5 V to 6.5 V |
| Standby Supply Current | 2 µA maximum |
| ESD Capability | 15 kV, 8 kV system-level ESD capable |
| Certifications | UL listed (file no. E169910), CB and Nemko certified |
Key Features
- Two separate current limiting channels
- Meets USB current-limiting requirements
- Adjustable current limit: 250 mA to 2.8 A (typ)
- Fast overcurrent response: 3.5 µs (typ)
- Two 44-mΩ high-side MOSFETs
- Built-in soft-start
- Low standby supply current: 2 µA maximum
- FAULTx logic output for overcurrent and overtemperature conditions
- Undervoltage lockout (UVLO) circuit
- Thermal protection with hysteresis
Applications
The TPS2560DRCR is ideal for various applications where precision current limiting and robust power distribution are necessary. These include:
- USB ports and hubs
- Televisions and other consumer electronics
- Smartphones and mobile devices
- Systems with heavy capacitive loads or potential short circuits
Q & A
- What is the operating temperature range of the TPS2560DRCR?
The operating temperature range is -40°C to 125°C.
- What is the adjustable current limit range of the TPS2560DRCR?
The current limit can be adjusted between 250 mA and 2.8 A per channel.
- How fast is the overcurrent response time of the TPS2560DRCR?
The overcurrent response time is typically 3.5 µs.
- What is the resistance of the high-side MOSFETs in the TPS2560DRCR?
The resistance of the high-side MOSFETs is 44 mΩ.
- What is the operating voltage range of the TPS2560DRCR?
The operating voltage range is 2.5 V to 6.5 V.
- What certifications does the TPS2560DRCR hold?
The device is UL listed (file no. E169910), CB and Nemko certified.
- How does the TPS2560DRCR handle overtemperature conditions?
The device has thermal protection with hysteresis, turning off the power switch when the junction temperature exceeds 135°C and restarting once it cools down by approximately 20°C.
- What is the purpose of the FAULTx logic output in the TPS2560DRCR?
The FAULTx logic output is asserted low during overcurrent or overtemperature conditions on each channel.
- How is the current-limit threshold programmed in the TPS2560DRCR?
The current-limit threshold is programmed via an external resistor (R_ILIM) connected to the ILIM pin.
- What is the standby supply current of the TPS2560DRCR?
The standby supply current is 2 µA maximum.
