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TPS2051B-Q1 Datasheet Preview

TPS2051B-Q1 Datasheet

Current-Limited Power-Distribution Switches

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TPS2041B-Q1, TPS2042B-Q1, TPS2051B-Q1
SLVS782C – NOVEMBER 2007 – REVISED SEPTEMBER 2016
TPS20xxB-Q1 Current-Limited Power-Distribution Switches
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification level 2
– Device CDM ESD Classification Level C6
– Device MM ESD Classification Level M0
• 70-mΩ High-Side MOSFET
• 500-mA Continuous Current
• Thermal and Short-Circuit Protection
• Accurate Current Limit: 0.75 A (Minimum), 1.25 A
(Maximum)
• Operating Range: 2.7 V to 5.5 V
• 0.6-ms Typical Rise Time
• Undervoltage Lockout
• Deglitched Fault Report (OC)
• No OC Glitch During Power Up
• Maximum Standby Supply Current: 1 µA (Single,
Dual) or 2 µA (Triple, Quad)
• Bidirectional Switch
• UL Recognized Under File Number E169910
2 Applications
• Heavy Capacitive Loads
• Short-Circuit Protection
3 Description
The TPS20xxB-Q1 power-distribution switches are
intended for applications where heavy capacitive
loads and short circuits are likely to be encountered.
These devices incorporate 70-mΩ N-channel
MOSFET power switches for power-distribution
systems that require multiple power switches in a
single package. Each switch is controlled by a logic
enable input. Gate drive is provided by an internal
charge pump designed to control the power-switch
rise times and fall times to minimize current surges
during switching. The charge pump requires no
external components and allows operation from
supplies as low as 2.7 V.
When the output load exceeds the current-limit
threshold or a short is present, the device limits the
output current to a safe level by switching into a
constant-current mode, pulling the overcurrent (OCx)
logic output low. When continuous heavy overloads
and short circuits increase the power dissipation in
the switch, causing the junction temperature to rise, a
thermal protection circuit shuts off the switch to
prevent damage. Recovery from a thermal shutdown
is automatic once the device has cooled sufficiently.
Internal circuitry ensures that the switch remains off
until valid input voltage is present. This power-
distribution switch is designed to set current limit at
1 A (typical).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS2041B-Q1
SOT-23 (5)
2.80 mm × 2.90 mm
TPS2042B-Q1,
TPS2051B-Q1
SOIC (8)
4.90 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Power Supply
2.7 V to 5.5 V
Typical Application Schematic
2
0.1 µF
TPS2042B-Q1
IN
OUT1
7
0.1 µF
22 µF
Load
8
OC1
3
EN1
5
OC2
4
EN2
6
OUT2
0.1 µF
22 µF
Load
GND
1
Copyright © 2016, Texas Instruments Incorporated
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

TPS2051B-Q1 Datasheet Preview

TPS2051B-Q1 Datasheet

Current-Limited Power-Distribution Switches

No Preview Available !

TPS2041B-Q1, TPS2042B-Q1, TPS2051B-Q1
SLVS782C – NOVEMBER 2007 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Parameter Measurement Information .................. 9
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagrams ..................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 12
9 Application and Implementation ........................ 13
9.1 Application Information............................................ 13
9.2 Typical Applications ................................................ 13
10 Power Supply Recommendations ..................... 20
11 Layout................................................................... 21
11.1 Layout Guidelines ................................................. 21
11.2 Layout Example .................................................... 21
11.3 Thermal Considerations ........................................ 21
12 Device and Documentation Support ................. 22
12.1 Related Links ........................................................ 22
12.2 Receiving Notification of Documentation Updates 22
12.3 Community Resources.......................................... 22
12.4 Trademarks ........................................................... 22
12.5 Electrostatic Discharge Caution ............................ 22
12.6 Glossary ................................................................ 22
13 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (October 2011) to Revision C
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................. 1
• Deleted Ordering Information table; see POA at the end of the data sheet........................................................................... 1
• Deleted General Switch Catalog image.................................................................................................................................. 1
• Added AEC-Q100 Qualified bullets ........................................................................................................................................ 1
• Changed Type for IN pin to PWR and description to Supply input voltage............................................................................ 3
• Added Thermal Information table ........................................................................................................................................... 5
• Deleted Dissipation Ratings section ...................................................................................................................................... 7
• Combined Functional Block Diagrams for TPS2041B-Q1 and TPS2051B-Q1 as they are the same ................................. 10
Changes from Revision A (June 2010) to Revision B
Page
• Changed orderable part number From: TPS2041QDBVRQ1 To: TPS2041BQDBVRQ1 ...................................................... 1
Changes from Original (November 2007) to Revision A
Page
• Added the TPS2041B-Q1 device information......................................................................................................................... 1
2 Submit Documentation Feedback
Copyright © 2007–2016, Texas Instruments Incorporated
Product Folder Links: TPS2041B-Q1 TPS2042B-Q1 TPS2051B-Q1


Part Number TPS2051B-Q1
Description Current-Limited Power-Distribution Switches
Maker etcTI
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