The TPS2560 and TPS2561 are dual-channel power-distribution switches intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. These devices offer a programmable current-limit threshold between 250 mA and 2.8 A (typ) per channel through an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turn on and off.
Each channel of the TPS256x devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULTx logic output for each channel independently asserts low during overcurrent and overtemperature conditions.
|Vin (Min) (V)|
|Vin (Max) (V)|
|Number of Switches|
|rDS(on) per FET (Typ) (mOhms)|
|Continuous Current (Max) (A)|
|Current Limit (A)|
|Current Limit Accuracy @ 1A|
|Current Limit Topology|
|Operating Temperature Range (C)|
|0.25 to 2.5||0.25 to 2.5||0.25 to 2.5||0.25 to 2.5|
|+/-7.5% (2590mA min / 3005mA max)||+/-7.5% (2590mA min / 3005mA max)||2.1A Min / 2.5A Max Setting (Including Resistor)||2.1A Min / 2.5A Max Setting (Including Resistor)|
|Active High||Active Low||Active Low||Active High|
|-40 to 85||-40 to 85||-40 to 85||-40 to 85|