SLVSC76E
February 2014 – May 2018
TPS92630-Q1
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Typical Application Schematic
5
Revision History
6
Description (Continued)
7
Pin Configuration and Functions
Pin Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Timing Requirements
8.7
Typical Characteristics
9
Parameter Measurement Information
10
Detailed Description
10.1
Overview
10.2
Functional Block Diagram
10.3
Feature Description
10.3.1
Constant LED-Current Setting
10.3.2
PWM Control
10.3.3
FAULT Diagnostics
10.3.4
Short-Circuit Detection
10.3.5
Open-Load Detection
10.3.6
Thermal Foldback
10.4
Device Functional Modes
10.4.1
Thermal Information
10.4.2
Operation With V(VIN) < 5 V (Minimum V(VIN))
10.4.3
Operation With 5 V < V(VIN) < 9 V (Lower-Than-Normal Automotive Battery Voltage)
11
Applications and Implementation
11.1
Application Information
11.2
Typical Applications
11.2.1
Stoplight and Taillight Application With PWM Generator
11.2.1.1
Design Requirements
11.2.1.2
Detailed Design Procedure
11.2.1.2.1
Step-by-Step Design Procedure
11.2.1.2.1.1
R(REF)
11.2.1.2.1.2
Duty Cycle
11.2.1.2.1.3
Input and Output Capacitors
11.2.1.3
PWM Dimming Application Curve
11.2.2
Simple Stop-Light and Taillight Application
11.2.2.1
Design Requirements
11.2.2.2
Detailed Design Procedure
11.2.2.2.1
Step-by-Step Design Procedure
11.2.2.2.1.1
R(REF)
11.2.2.2.1.2
R(Stop)
11.2.2.2.1.3
Input and Output Capacitors
11.2.3
Parallel Connection
11.2.3.1
Design Requirements
11.2.3.2
Detailed Design Procedure
11.2.3.2.1
Step-by-Step Design Procedure
11.2.3.2.1.1
R(REF)
11.2.3.2.1.2
Input and Output Capacitors
11.2.4
Alternate Parallel Connection
11.2.4.1
Design Requirements
11.2.4.2
Detailed Design Procedure
11.2.4.2.1
Step-by-Step Design Procedure
11.2.4.2.1.1
R(REF)
11.2.4.2.1.2
Input and Output Capacitors
11.2.5
High-Side PWM Dimming
11.2.5.1
Design Requirements
11.2.5.2
Detailed Design Procedure
11.2.5.2.1
Step-by-Step Design Procedure
11.2.5.2.1.1
Ratio of Resistors, R1 / R2
11.2.5.2.1.2
R1 and R2 Selection
11.2.5.2.1.3
Input and Output Capacitors
12
Power Supply Recommendations
13
Layout
13.1
Layout Guidelines
13.2
Layout Example
14
Device and Documentation Support
14.1
Documentation Support
14.1.1
Related Documentation
14.2
Receiving Notification of Documentation Updates
14.3
Community Resources
14.4
Trademarks
14.5
Electrostatic Discharge Caution
14.6
Glossary
15
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|16
MPDS371A
Thermal pad, mechanical data (Package|Pins)
PWP|16
PPTD312C
Orderable Information
slvsc76e_oa
slvsc76e_pm
11.2.3.2.1.1
R
(REF)
Equation 12.
R
(REF)
= V
ref
× K
(I)
/ (I
(LED)
/ Channel) = 1.222 × 100 / (200 / 2) = 1.222 kΩ