| Part Number | TPS22981 |
| Manufacturer | Texas Instruments |
| Title | 3.3-V to 18-V Thunderbolt Power Mux |
| Description | The TPS22981 device is a current-limited power mux providing a connection to a peripheral device from either a low-voltage supply (3 V to 3.6 V) o... |
| Features |
•1 Powered from 3.3 V • 4.5-V to 19.8-V High-Voltage Switch • 3-V to 3.6-V Switch • Adjustable Current Limit • Thermal Shutdown • Make Before Break Switch • High-Voltage Discharge Before Low-Voltage Make • Reverse Current Blocking 2 Applications • Notebook Computers • Desktop Computers • Power Manag... |
| File Size | 1.08MB |
| Datasheet |
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TPS22980 : The TPS22980 is a current-limited power mux providing a connection to a peripheral device from either a low voltage supply (3.0V up to 3.6V) or a high voltage supply (5V up to 18V). The desired output is selected by digital control signals. The high voltage (VHV) and low voltage (V3P3) switch current limits are set with external resistance. Once the current limit is reached, the TPS22980 will control the switch to maintain the current at the limit. When the high voltage supply is not present, the TPS22980 will maintain the connection to the output from the low voltage supply. When a high voltage line and high voltage enable signal is detected by the device, the high voltage switch will be tu.
TPS22985 : The TPS22985 is a supply selection device for active Thunderbolt™ cables. The device selects a supply that is at 3.3V from two supply inputs and connects this to two non-current limited outputs OUTA and OUTB. When 3.3V is not present at either supply, the outputs become high impedance. The TPS22985 has two modes of operation, Normal and Control. In Normal Mode, OUTA is always on when a valid supply is present. OUTB is connected to a valid VDD when the ENB input is high. In Control Mode, OUTA functions the same as Normal Mode and OUTB is controlled by a combination of monitored inputs and valid supplies on VDD1 and VDD2. When a valid VDD is available, the device waits for a rising input on EN.
TPS22986 : The TPS22986 is a supply selection device for active Thunderbolt™ cables. The device selects a 3.3V input from two available supplies and connects the chosen input to two outputs, OUTA and OUTB. When a 3.3V supply is not present, the outputs become high impedance. The TPS22986 has two modes of operation, Normal and Control. In Normal Mode, OUTA is always on when a valid supply is present. OUTB is connected to a valid supply when the ENB input is high. In Control Mode, OUTA behaves the same as Normal Mode and OUTB is controlled by a combination of monitored inputs and valid supplies on VDD1 and VDD2. When a valid VDD is available, the device waits for a rising input on ENB and then disconnect.