Infineon TLD1211SJ User Manual
User Manual Please read the Important Notice and Warnings at the end of this document V 1.0
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Z8F80042284
TLD1211SJ evaluation board
User Manual
About this document
Scope and purpose
The scope of the TLD1211SJ_EVAL (evaluation) board is to help designers evaluate the performance of the
LITIX™ Linear TLD1211SJ, a single channel linear current source LED driver for automotive LED lighting
applications. The LITIX™ Linear TLD1211SJ provides a simple and low-cost solution for low current applications
up to 85 mA. When using additional external power stages as “booster” transistors, it can also be used to drive
high currents up to 2.5 A.
This user manual provides the usage instructions of the TLD1211SJ_EVAL board (schematic version
S00, PCB version P00).
Figure 1 TLD1211SJ_EVAL board
Intended audience
Hardware engineers, system architects
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TLD1211SJ evaluation board
User Manual
TLD1211SJ_EVAL description
Related information
Table 1 Supplementary links and document references
Reference
Description
LITIX™ Linear TLD1211SJ product
Product website which contains reference information for
the LITIX™ Linear TLD1211SJ including datasheet,
simulation models, board and relevant trainings
LITIX™ Linear family
All information about LITIX™ Linear family products
LED driving concepts and Linear LED drivers
Application note regarding the usage and design-in of the
LITIX™ Linear and BCR LED drivers
LED rear lighting - application
Application website for rear LED lighting
Table of contents
About this document ......................................................................................................................... 1
Table of contents .............................................................................................................................. 2
1 TLD1211SJ_EVAL description .................................................................................................... 3
1.1 Key features ............................................................................................................................................. 4
1.2 Connectors and jumpers ......................................................................................................................... 4
1.3 On-board load ......................................................................................................................................... 5
1.4 Test points ............................................................................................................................................... 5
2 Quick start ............................................................................................................................... 6
2.1 Low current configuration, I
OUT
= 50 mA ................................................................................................. 6
2.2 High current configuration, I
OUT
= 300 mA .............................................................................................. 6
3 Schematics, layout and bill of material ...................................................................................... 7
3.1 Schematics .............................................................................................................................................. 7
3.2 Layout ...................................................................................................................................................... 8
3.3 Bill of materials ........................................................................................................................................ 9
3.4 PCB design data ...................................................................................................................................... 9
Revision history ...............................................................................................................................10
User Manual Please read the Important Notice and Warnings at the end of this document V 1.0
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TLD1211SJ evaluation board
User Manual
TLD1211SJ_EVAL description
1 TLD1211SJ_EVAL description
The TLD1211SJ_EVAL is an evaluation board equipped with one LITIX™ Linear TLD1211SJ and on-board LEDs
for easy evaluation. The board can be used within the typical automotive voltage range, 8 V to 16 V. The
jumpers available on the board offer the user the possibility to evaluate the LITIX™ Linear TLD1211SJ in both
low and high current applications.
Figure 2 Low current application with LITIX™ Linear TLD1211SJ
Figure 3 High current application with LITIX™ Linear TLD1211SJ and “booster” transistor
TLD1211SJ
VSENSE
VS
EN
GND
OUT
R
SENSE
V
S
R
EN2
R
EN1
TLD1211SJ
VSENSE
VS
EN
GND
OUT
R
SENSE
V
S
R
EN2
R
EN1
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TLD1211SJ evaluation board
User Manual
TLD1211SJ_EVAL description
1.1 Key features
The TLD1211SJ_EVAL has the following features:
• Equipped with one LITIX™ Linear TLD1211SJ
• Typical supply voltage range 8 V to 16 V
• Equipped with jumpers that provide the possibility to evaluate TLD1211SJ in two different current
configurations:
o I
OUT
= 50 mA
o I
OUT
= 300 mA
• On-board LED load, 3 red LEDs
• 7.4 cm x 6.1 cm 2-layer PCB
1.2 Connectors and jumpers
The TLD1211SJ_EVAL board connectors are described in Table 2.
Table 2 TLD1211SJ_EVAL connectors
Connector
Description
INPUT
VS
Power supply, typical 8 V to 16 V
GND
Ground
The TLD1211SJ_EVAL board jumpers are described in Table 3:
Table 3 TLD1211SJ_EVAL board jumpers
Jumper
Description and configuration
LED_ANODE
Select the connection of the LED string anode:
• VS: connect to the VS line, configuration for I
OUT
= 300 mA
• OUTPUT: connect directly to the OUT-pin of LITIX™ Linear TLD1211SJ,
configuration for I
OUT
= 50 mA
RSENSE
Select the sense resistor connected to the VSENSE-pin of LITIX™ Linear TLD1211SJ:
• RSENSE1: connect to 3 Ω resistor to set I
OUT
= 50 mA
• RSENSE2: connect to 500 mΩ resistor to set I
OUT
= 300 mA
LED_CATHODE
Select the connection of the LED string cathode:
• RSENSE1: connect to RSENSE1, configuration for I
OUT
= 50 mA
• Q1_COLLECTOR: connect to the collector of Q1 transistor, configuration for
I
OUT
= 300 mA
OUTPUT
Select the output configuration of LITIX™ Linear TLD1211SJ:
• LED_AN: connect to the anode of the LED string, configuration for I
OUT
= 50 mA
• Q1_BASE: connect to the base of Q1 transistor, configuration for I
OUT
= 300 mA
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