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TPS2561-Q1
SLVSB51A – DECEMBER 2011 – REVISED AUGUST 2012
DUAL CHANNEL PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCH
Check for Samples: TPS2561-Q1
FEATURES
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•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
DESCRIPTION
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.
TPS2561-Q1 DRC PACKAGE
(TOP VIEW)
GND 1 IN 2 IN 3
EN1 4 EN2 5
10 FAULT1 9 OUT1
PAD 8 OUT2 7 ILIM
6 FAULT2
ENx = Active Low for the TPS2560 ENx = Active High for the TPS2561-Q1
TPS2561-Q1
2.5 V – 6.5 V
0.1 μF
IN
OUT1
2x RFAULT 100 kΩ
Fault Signal Fault Signal Control Signal
IN
OUT2
RILIM
ILIM FAULT1 FAULT2 GND EN1
Control Signal
EN2 PowerPAD
VOUT1
VOUT2 2x CLOAD
Figure 1. Typical Application as USB Power Switch
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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.
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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
TPS2561-Q1
SLVSB51A – DECEMBER 2011 – REVISED AUGUST 2012
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
TA (2) –40°C to 125°C
ORDERING INFORMATION(1)
PACKAGE
ORDERABLE PART NUMBER
SON - DRC
Reel of 3000
TPS2561QDRCRQ1
TOP-SIDE MARKING PXPQ
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.
(2) Maximum ambient temperature is a function of device junction temperature and system level considerations, such as power dissipation and board layout. See dissipation rating table and recommended operating conditions for specific information related to these devices.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1) (2)
Voltage range on IN, OUTx, ENx or ENx, ILIM, FAULTx Voltage range from IN to OUTx Continuous output current Continuous total power dissipation Continuous FAULTx sink current ILIM source current
HBM ESD
CDM ESD – system level (contact/air)(3) TJ Maximum junction temperature
VALUE –0.3 to 7 –7 to 7 Internally Limited See the Dissipation Rating Table
25 Internally Limited
2 1000 8/15 –40 to 125(4)
UNIT V V
mA mA kV V kV °C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Voltages are referenced to GND unless otherwise noted. (3) Surges per EN61000-4-2, 1999 applied between USB and output ground of the TPS2561EVM (HPA424) evaluation module
(documentation available on the web.) These were the test level, not the failure threshold. (4) Ambient over temperature shutdown threshold
DISSIPATION RATING TABLE
BOARD High-K (2)
PACKAGE DRC
THERMAL RESISTANCE(1) θJA
41.6°C/W
THERMAL RESISTANCE θJC
10.7°C/W
TA ≤ 25°C POWER RATING
2403 mW
(1) Mounting per the PowerPADTM Ther.