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TPS54200, TPS54201 4.5-V to 28-V Input Voltage, 1.5-A Output Current, Synchronous Buck Mono-Color or IR LED Driver
SLUSCO8B
November 2016 – June 2018
TPS54200
,
TPS54201
PRODUCTION DATA.
CONTENTS
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TPS54200, TPS54201 4.5-V to 28-V Input Voltage, 1.5-A Output Current, Synchronous Buck Mono-Color or IR LED Driver
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
Excellent Deep Dimming in ADIM
4
Revision History
5
Description (continued)
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Switching Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Fixed-Frequency PWM Control
8.3.2
Error Amplifier
8.3.3
Slope Compensation and Output Current
8.3.4
Input Undervoltage Lockout
8.3.5
Voltage Reference
8.3.6
Setting LED Current
8.3.7
Internal Soft Start
8.3.8
Bootstrap Voltage (BOOT)
8.3.9
Overcurrent Protection
8.3.9.1
High-Side MOSFET Overcurrent Protection
8.3.9.2
Low-Side MOSFET Overcurrent Protection
8.3.9.3
Low-Side MOSFET Reverse Overcurrent Protection
8.3.10
Fault Protection
8.3.10.1
LED-Open Protection
8.3.10.2
LED Short Protection
8.3.10.3
Sense-Resistor Short Protection
8.3.10.4
Sense-Resistor Open Protection
8.3.10.5
Overvoltage Protection
8.3.10.6
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Enable and Disable Device
8.4.2
Mode Detection
8.4.3
Analog Dimming Mode Operation
8.4.4
PWM Dimming-Mode Operation
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
TPS5420x 12-V Input, 1.5-A, 3-Piece IR LED Driver With Analog Dimming
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Inductor Selection
9.2.1.2.2
Input Capacitor Selection
9.2.1.2.3
Output Capacitor Selection
9.2.1.2.4
FB Pin RC Filter Selection
9.2.1.2.5
Sense Resistor Selection
9.2.1.3
Application Curves
9.2.2
TPS5420x 24-V Input, 1-A, 4-Piece WLED Driver With PWM Dimming
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.2.1
Inductor Selection
9.2.2.2.2
Input Capacitor Selection
9.2.2.2.3
Output Capacitor Selection
9.2.2.2.4
FB Pin RC Filter Selection
9.2.2.2.5
Sense Resistor Selection
9.2.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Documentation Support
12.2.1
Related Links
12.3
Receiving Notification of Documentation Updates
12.4
Community Resources
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
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DATA SHEET
TPS54200, TPS54201 4.5-V to 28-V Input Voltage, 1.5-A Output Current, Synchronous Buck Mono-Color or IR LED Driver
1
Features
4.5-V to 28-V Wide Input Range
Integrated 150-mΩ and 70-mΩ MOSFETs for 1.5‑A, Continuous Output Current
Low, 2-μA Shutdown Current
Fixed 600-kHz Frequency
Peak Current Mode With Internal Compensation
200-mV and 100-mV Sense Voltage During Analog and PWM Dimming Modes
Precision Analog Dimming (ADIM) by PWM Input
LED-Open and -Short Protection
Sense-Resistor-Open and -Short Protection
Shutdown-and-Latch Mode Protection (TPS54200)
Auto-Retry Mode Protection (TPS54201)
Thermal Shutdown
6-Pin SOT-23-THIN Package
2
Applications
IR LED for Day or Night Vision
IP Network Camera
Analog Security Camera
Video Doorbell
Embedded Camera System
LED Display and Lighting
Refrigerators and Freezers
Electronic Smart Lock
General-Purpose LED Driver
Architecture Lighting