SBVS324A
June 2017 – June 2020
TPS7A90
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Typical Application Circuit
Typical Application Diagram
4
Revision History
5
Pin Configuration and Functions
Pin 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
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Output Enable
7.3.2
Dropout Voltage (VDO)
7.3.3
Output Voltage Accuracy
7.3.4
High Power-Supply Rejection Ratio (PSRR)
7.3.5
Low Output Noise
7.3.6
Output Soft-Start Control
7.3.7
Power-Good Function
7.3.8
Internal Protection Circuitry
7.3.8.1
Undervoltage Lockout (UVLO)
7.3.8.2
Internal Current Limit (ICL)
7.3.8.3
Thermal Protection
7.4
Device Functional Modes
7.4.1
Normal Operation
7.4.2
Dropout Operation
7.4.3
Disabled
8
Application and Implementation
8.1
Application Information
8.1.1
Adjustable Output
8.1.2
Start-Up
8.1.2.1
Enable (EN) and Undervoltage Lockout (UVLO)
8.1.2.2
Noise-Reduction and Soft-Start Capacitor (CNR/SS)
8.1.2.2.1
Noise Reduction
8.1.2.2.2
Soft-Start and In-Rush Current
8.1.3
Capacitor Recommendation
8.1.3.1
Input and Output Capacitor Requirements (CIN and COUT)
8.1.3.1.1
Load-Step Transient Response
8.1.3.2
Feed-Forward Capacitor (CFF)
8.1.4
Power Dissipation (PD)
8.1.5
Estimating Junction Temperature
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Board Layout
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Evaluation Modules
11.1.1.2
SPICE Models
11.1.2
Device Nomenclature
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Support Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DSK|10
MPDS326A
Thermal pad, mechanical data (Package|Pins)
DSK|10
QFND148E
Orderable Information
sbvs324a_oa
sbvs324a_pm
10.2
Layout Example
Figure 42.
TPS7A90 Example Layout