SLUS907K
January 2009 – June 2019
TPS2421-1
,
TPS2421-2
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Typical Application
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
CT
8.3.2
FLT
8.3.3
GND
8.3.4
ISET
8.3.5
VIN
8.3.6
VOUT
8.3.7
PG
8.4
Device Functional Modes
8.4.1
Startup
8.4.2
Maximum Allowable Load to Ensure Successful Startup
8.4.2.1
Enable Pin Considerations
8.4.2.2
Fault Timer
8.4.2.3
Normal Operation
8.4.2.4
Startup into a Short
8.4.3
Shutdown Modes
8.4.3.1
Hard Overload - Fast Trip
8.4.3.2
Overcurrent Shutdown
8.5
Programming
8.5.1
Fault (ISET) and Current-Limit (ILIM) Thresholds
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Transient Protection
9.2.3
Application Curves
10
Power Supply Recommendations
10.1
PowerPad™
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Related Links
12.3
Receiving Notification of Documentation Updates
12.4
Community Resource
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
DDA|8
MPDS092F
サーマルパッド・メカニカル・データ
DDA|8
PPTD043J
発注情報
slus907k_oa
slus907k_pm
9.2.3
Application Curves
Figure 15.
12-V Startup into 15-Ω, 700-μF Load
Figure 17.
12-V Faulted Startup into 4-Ω Load
Figure 19.
12-V Firm Overload, 3 A to 5.4 A,
Power Limit Tripped
Figure 21.
Power Dissipation During 12-V
Startup into 60 Ω, 800 μF
Figure 16.
12 V, 140 μF Added to 8-Ω Load
Figure 18.
12-V Soft Overload, 3 A to 4.2 A,
Power Limit Not Tripped
Figure 20.
12-V Hard Overload, 3.6-A Load then Short
Figure 22.
Power Dissipation During 12-V
Startup into 15 Ω, 140 μF