SLVS484C
June 2003 – December 2014
TPS61090
,
TPS61091
,
TPS61092
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Electrical Characteristics
7.5
Typical Characteristics
8
Parameter Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Synchronous Rectifier
9.3.2
Controller Circuit
9.3.3
Device Enable
9.3.4
Undervoltage Lockout
9.3.5
Softstart
9.3.6
Power Save Mode and Synchronization
9.3.7
Low Battery Detector Circuit—LBI/LBO
9.3.8
Low-EMI Switch
9.4
Device Functional Modes
10
Application and Implementation
10.1
Application Information
10.2
Typical Applications
10.2.1
Typical Application Circuit for Adjustable Output Voltage Option
10.2.1.1
Design Requirements
10.2.1.2
Detailed Design Procedure
10.2.1.2.1
Programming the Output Voltage
10.2.1.2.2
Programming the LBI/LBO Threshold Voltage
10.2.1.2.3
Inductor Selection
10.2.1.2.4
Capacitor Selection
10.2.1.2.4.1
Input Capacitor
10.2.1.2.4.2
Output Capacitor DC-DC Converter
10.2.1.2.4.3
Small Signal Stability
10.2.1.3
Application Curves
10.2.2
TPS6109x Application Schematic of 5 Vout With Maximum Output Power
10.2.3
TPS6109x Application Schematic of 5 Vout and Auxiliary 10 Vout With Charge Pump
10.2.4
TPS6109x Application Schematic of 5 Vout and Auxiliary -5 Vout With Charge Pump
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
12.3
Thermal Considerations
13
Device and Documentation Support
13.1
Device Support
13.1.1
Third-Party Products Disclaimer
13.2
Related Links
13.3
Trademarks
13.4
Electrostatic Discharge Caution
13.5
Glossary
14
Mechanical, Packaging, and Orderable Information
8 Parameter Measurement Information
Figure 13. Parameter Schematic