SLVSCG0
July 2014
TPS57114-EP
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Simplified Schematic
5
Revision History
6
Description (continued)
7
Pin Configuration and Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
Handling Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Typical Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Fixed-Frequency Pwm Control
9.3.2
Slope Compensation and Output Current
9.3.3
Bootstrap Voltage (Boot) and Low-Dropout Operation
9.3.4
Error Amplifier
9.3.5
Voltage Reference
9.3.6
Adjusting the Output Voltage
9.3.7
Enable Functionality and Adjusting UVLO
9.3.8
Slow-Start or Tracking Pin
9.3.9
Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
9.3.10
Overcurrent Protection
9.3.11
Frequency Shift
9.3.12
Reverse Overcurrent Protection
9.3.13
Synchronize Using the RT/CLK Pin
9.3.14
Power Good (PWRGD Pin)
9.3.15
Overvoltage Transient Protection (OVTP)
9.3.16
Thermal Shutdown
9.3.17
Small-Signal Model for Loop Response
9.3.18
Simple Small-Signal Model for Peak-Current Mode Control
9.3.19
Small-Signal Model for Frequency Compensation
9.4
Device Functional Modes
9.4.1
RT (Resistor Timing) Mode
9.4.2
CLK (External Clock) Mode
10
Application and Implementation
10.1
Application Information
10.1.1
Sequencing
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Selecting the Switching Frequency
10.2.2.2
Output Inductor Selection
10.2.2.3
Output Capacitor
10.2.2.4
Input Capacitor
10.2.2.5
Slow-Start Capacitor
10.2.2.6
Bootstrap Capacitor Selection
10.2.2.7
Output-Voltage and Feedback-Resistor Selection
10.2.2.8
Compensation
10.2.2.9
Power-Dissipation Estimate
10.2.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Trademarks
13.2
Electrostatic Discharge Caution
13.3
Glossary
14
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)
RTE|16
MPQF149D
サーマルパッド・メカニカル・データ
RTE|16
QFND290G
発注情報
slvscg0_oa
slvscg0_pm
5 Revision History
Date
Revision
Notes
July 2014
*
Initial release.