SLVSB51A – DECEMBER 2011 – REVISED AUGUST 2012
DUAL CHANNEL PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCH
Check for Samples: TPS2561-Q1
•2 Qualified for Automotive Applications
• Two Separate Current Limiting Channels
• Meets USB Current-Limiting Requirements
• Adjustable Current Limit, 250 mA–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 or 8 kV System-Level ESD Capable
• UL Listed – File No. E169910
• CB and Nemko Certified
The TPS2561-Q1 is a dual-channel power-distribution
switch 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 or off.
Each channel of the TPS2561-Q1 device limits 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 over temperature conditions.
PAD 8 OUT2
ENx = Active Low for the TPS2560
ENx = Active High for the TPS2561-Q1
2.5 V – 6.5 V
Figure 1. Typical Application as USB Power Switch
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated