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TPS2561A-Q1 Datasheet

Dual Channel Precision Automotive Adjustable Current-Limited Power Switches

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TPS2561A-Q1
SLVSCC6A – MARCH 2014 – REVISED JUNE 2014
TPS2561A-Q1 Dual Channel Precision Automotive Adjustable
Current-Limited Power Switches
1 Features
1 AEC-Q100 Qualified
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C5
• Two separate current limiting channels
• Meets USB Current-Limiting Requirements
• Adjustable Current Limit, 250 mA–2.8 A (Typ.)
• Accurate 2.1A Min / 2.5A Max Setting
• Fast Short Circuit Response - 3.5-μs (typ)
• Two 44-mHigh-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
2 Applications
Automotive USB Charging Ports
3 Description
The TPS2561A-Q1 is dual-channel power-distribution
switch intended for automotive 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 via an external resistor. The power-switch
rise and fall times are controlled to minimize current
surges during turn on/off.
Each channel of the TPS2561A-Q1 devices 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.
Use with the TPS2511-Q or TPS2513A-Q1 for a low
loss, automotive qualified, USB Charging Port
Solution capable of charging all of today's popular
phones and tablets.
PART NUMBER
TPS2561A-Q1
Device Information
PACKAGE
BODY SIZE (NOM)
SON (10)
3.00mm x 3.00mm
spacer
spacer
Typical Application as Power Switch of Dual Port Automotive USB Charge Port Solution
5VOUT
0.1­F
100kŸ 100kŸ
DC to DC
Controller or converter
(LM25117-Q1,
TPS40170-Q1)
Control Signal
Control Signal
COUT
OUT1
IN
IN
OUT2
TPS2561A-Q1
RILIM
FAULT2
ILIM
FAULT1
EN1
EN2 PowerPad GND
VIN
DM1
DP1
TPS2513A-Q1
DM2
GND
DP2
USB
Connector1
VBUS
D-
D+
CUSB
GND
USB
Connector2
VBUS
D-
D+
GND
CUSB
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

TPS2561A-Q1 Datasheet Preview

TPS2561A-Q1 Datasheet

Dual Channel Precision Automotive Adjustable Current-Limited Power Switches

No Preview Available !

TPS2561A-Q1
SLVSCC6A – MARCH 2014 – REVISED JUNE 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Functions and Configurations ....................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 Handling Ratings....................................................... 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Typical Characteristics .............................................. 6
8 Parameter Measurement Information .................. 7
9 Detailed Description .............................................. 9
9.1 Overview ................................................................... 9
9.2 Functional Block Diagram ......................................... 9
9.3 Feature Description................................................... 9
9.4 Device Functional Mode ......................................... 10
10 Application and Implementation........................ 11
10.1 Application Information.......................................... 11
10.2 Typical Application ................................................ 11
11 Power Supply Requirements ............................. 17
12 Layout................................................................... 18
12.1 Layout Guidelines ................................................. 18
12.2 Layout Example .................................................... 18
13 Device and Documentation Support ................. 19
13.1 Trademarks ........................................................... 19
13.2 Electrostatic Discharge Caution ............................ 19
13.3 Glossary ................................................................ 19
14 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
Changes from Original (March 2014) to Revision A
Page
• Changed Feature From: Accurate 2.1A Min / 2.5A Max Setting (Including Resistor) To: Accurate 2.1A Min / 2.5A
Max Setting............................................................................................................................................................................. 1
• Changed IOS, Current-limit. to include additional RILIM values. .............................................................................................. 5
• Changed Equation 1 ............................................................................................................................................................ 11
• Changed the Designing Above a Minimum Current Limit section........................................................................................ 12
• Changed the Designing Below a Maximum Current Limit section ....................................................................................... 13
2
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Product Folder Links: TPS2561A-Q1
Copyright © 2014, Texas Instruments Incorporated


Part Number TPS2561A-Q1
Description Dual Channel Precision Automotive Adjustable Current-Limited Power Switches
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