SNVSAF5D
January 2016 – May 2021
TPS61194
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics (1) (1)
6.6
Internal LDO Electrical Characteristics
6.7
Protection Electrical Characteristics
6.8
Current Sinks Electrical Characteristics
6.9
PWM Brightness Control Electrical Characteristics
6.10
Boost and SEPIC Converter Characteristics
6.11
Logic Interface Characteristics
6.12
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Integrated DC-DC Converter
7.3.2
Internal LDO
7.3.3
LED Current Sinks
7.3.3.1
Output Configuration
7.3.3.2
Current Setting
7.3.3.3
Brightness Control
7.3.4
Protection and Fault Detections
7.3.4.1
Adaptive DC-DC Voltage Control and Functionality of LED Fault Comparators
7.3.4.2
Overview of the Fault/Protection Schemes
7.4
Device Functional Modes
7.4.1
Device States
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Typical Application for 4 LED Strings
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Inductor Selection
8.2.1.2.2
Output Capacitor Selection
8.2.1.2.3
Input Capacitor Selection
8.2.1.2.4
LDO Output Capacitor
8.2.1.2.5
Diode
8.2.1.3
Application Curves
8.2.2
SEPIC Mode Application
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
Inductor
8.2.2.2.2
Diode
8.2.2.2.3
Capacitor C1
8.2.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Support Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|20
MHTS001G
Thermal pad, mechanical data (Package|Pins)
PWP|20
PPTD027Z
Orderable Information
snvsaf5d_oa
snvsaf5d_pm
6.6
Internal LDO Electrical Characteristics
T
J
= −40°C to +125°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
LDO
Output voltage
V
IN
= 12 V
4.15
4.3
4.55
V
V
DR
Dropout voltage
120
300
430
mV
I
SHORT
Short circuit current
50
mA