Datasheet TPS54332 (Texas Instruments) - 4

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TPS54332
SLVS875C – JANUARY 2009 – REVISED NOVEMBER 2014
www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
MIN MAX UNIT
Input Voltage VIN –0.3 30 V EN –0.3 6 BOOT 38 VSENSE –0.3 3 COMP –0.3 3 SS –0.3 3 Output Voltage BOOT-PH 8 V PH –0.6 30 PH (10 ns transient from ground to negative peak) –5 Source Current EN 100 μA BOOT 100 mA VSENSE 10 μA PH 9.25 A Sink Current VIN 9.25 A COMP 100 μA SS 200 Operating Junction –40 150 °C Temperature (1) Stresses beyond those listed under Absolute Maxmium Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
6.2 Handling Ratings MIN MAX UNIT
Tstg Storage Temperature –65 150 °C Electrostatic Discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS- 2 kV 001, all pins(1) V(ESD) Charged device model (CDM), per JEDEC specification 500 V JESD22-C101, all pins(2) (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
Operating Input Voltage on (VIN pin) 3.5 28 V Operating junction temperature, TJ –40 150 °C 4 Submit Documentation Feedback Copyright © 2009–2014, Texas Instruments Incorporated Product Folder Links: TPS54332 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 Handling Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics 6.6 Switching Characteristics 6.7 Typical Characteristics: Characterization Curves 6.8 Typical Characteristics: Supplemental Application Curves 7 Detailed Description 7.1 Overview 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Fixed Frequency PWM Control 7.3.2 Voltage Reference (Vref) 7.3.3 Bootstrap Voltage (BOOT) 7.3.4 Enable and Adjustable Input Undervoltage Lockout (VIN UVLO) 7.3.5 Programmable Slow-Start Using SS Pin 7.3.6 Error Amplifier 7.3.7 Slope Compensation 7.3.8 Current Mode Compensation Design 7.3.9 Overcurrent Protection and Frequency Shift 7.3.10 Overvoltage Transient Protection 7.3.11 Thermal Shutdown 7.4 Device Functional Modes 7.4.1 Operation With VIN < 3.5 V 7.4.2 Operation With EN Control 7.4.3 Eco-Mode 8 Application and Implementation 8.1 Application Information 8.2 Typical Application 8.2.1 Design Requirements 8.2.2 Detailed Design Procedure 8.2.2.1 Switching Frequency 8.2.2.2 Output Voltage Set Point 8.2.2.3 Input Capacitors 8.2.2.4 Output Filter Components 8.2.2.5 Inductor Selection 8.2.2.6 Capacitor Selection 8.2.2.7 Compensation Components 8.2.2.8 Bootstrap Capacitor 8.2.2.9 Catch Diode 8.2.2.10 Output Voltage Limitations 8.2.2.11 Power Dissipation Estimate 8.2.3 Application Curves 9 Power Supply Recommendations 10 Layout 10.1 Layout Guidelines 10.2 Layout Example 10.3 Estimated Circuit Area 10.4 Electromagnetic Interference (EMI) Considerations 11 Device and Documentation Support 11.1 Device Support 11.1.1 Development Support 11.2 Trademarks 11.3 Electrostatic Discharge Caution 11.4 Glossary 12 Mechanical, Packaging, and Orderable Information