SBVS121E
August 2010 – May 2015
TPS7A49
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Internal Current Limit
8.3.2
Programmable Soft-Start
8.3.3
Enable Pin Operation
8.3.4
Thermal Protection
8.4
Device Functional Modes
8.4.1
Normal Operation
8.4.2
Dropout Operation
8.4.3
Disabled
9
Application and Implementation
9.1
Application Information
9.1.1
Adjustable Operation
9.1.2
Capacitor Recommendations
9.1.3
Input and Output Capacitor Requirements
9.1.4
Noise-Reduction and Feed-Forward Capacitor Requirements
9.1.5
Maximum AC Performance
9.1.6
Output Noise
9.1.7
Post DC-DC Converter Filtering
9.1.8
Power-Supply Rejection
9.1.9
Transient Response
9.1.10
Audio Applications
9.1.11
Power for Precision Analog
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.3
Application Curves
9.3
Do's and Don’ts
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
Board Layout Recommendations to Improve PSRR and Noise Performance
11.1.2
Power Dissipation
11.2
Layout Example
11.3
Package Mounting
12
Device and Documentation Support
12.1
Device Support
12.1.1
Development Support
12.1.1.1
Evaluation Modules
12.1.1.2
Spice Models
12.1.2
Device Nomenclature
12.2
Documentation Support
12.2.1
Related Documentation
12.3
Community Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DRB|8
MPDS118K
DGN|8
MPDS046G
Thermal pad, mechanical data (Package|Pins)
DRB|8
QFND058N
DGN|8
PPTD041I
Orderable Information
sbvs121e_oa
sbvs121e_pm
7 Parameter Measurement Information
Figure 25. Output Spectral Noise Density vs Output Current
Figure 26. Output Spectral Noise Density vs C
NR/SS
Figure 27. Output Spectral Noise Density vs V
OUT(NOM)