1 Features
• Two separate current limiting channels
• Meets USB current-limiting requirements
• Adjustable current limit: 250 mA to 2.8 A (typ)
• ± 7.5% current-limit accuracy at 2.8 A
• Fast overcurrent response: 3.5 μs (typ)
• Two 44-mΩ high-side MOSFETs
• Operating range: 2.5 V to 6.5 V
• 2-μA maximum standby supply current
• Built-in soft-start
• 15-kV, 8-kV system-level ESD capable
• UL listed: file no. E169910
• CB and Nemko certified

2 Applications
• USB ports, hubs
• Digital TVs
• Set-top boxes
• VOIP phones

3 Description
The TPS2560 and TPS2561 (TPS256x) are dualchannel
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.