TLD1121EL_15 Datasheet, PDF (28/31 Pages) Marl International Limited – Basic LED Driver

TLD1121EL
Application Information
10
Application Information
Note: The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
V_BATT
Light
module
OUT
Microcontroller
(e.g. XC866)
C_{mo d}=2 .2µF
IS O-Pulse
protection circuit
depending on
r e q u ir e m e n ts
10kΩ
C _VS=4 .7 n F
VS
Internal
supply
EN
Thermal
protection
Output
control
OUT
4.7nF**
OUT
IN
R_SET
IN_SET Current
adjust
BasiLcITLIXE^TMDBaDsriciver
Status
ST GNDS
GND
470kΩ *
Eventually to other
BaLsITicIXL^TE^MDBDasriivcer
* In case PWM via VS or EN is performed.
** For EMI improvement, if required, ≈10nF
Figure 20 Application Diagram
Note: This is a very simplified example of an application circuit. In case of high ISO-pulse requirements a reverse
protection diode may be used for LED protection. The function must be verified in the real application.
10.1
Further Application Information
• For further information you may contact http://www.infineon.com/
Data Sheet
28
Rev. 1.1, 2015-03-19