TLD1125EL_15 Datasheet, PDF (33/36 Pages) Marl International Limited – Basic LED Driver

TLD1125EL
Application Information
12
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_bat
BCM
PROFET
channel 1
IN1
IS1
SEN
internal
pow er
supply
ESD
protection
logic
load current
s ens e
gate control
&
charge pump
open load
detection
temperature
s ens or
clamp for
inductive load
multi step
load current
limitation
VBB
OUT1
channel 2
IN2
IS2
control and protection circuit
equivalent to
channel 1
R GND
GN D
OUT2
TAIL
BRAKE
C mo d=2 .2 µF
IS O- P u lse
protection circuit
depending on
re q u ir e me n ts
10kΩ
C_VS=4.7nF
VS
Internal
supply
EN
Thermal
protection
PWMI
D
Output
control
R_PWMI C_PWMI
C_D
R_SET
IN_SET Current
adjust
BLaITsIXic^TMLBEaDs ic D riv er
Status
ST
Rear Light
assembly
OUT
4.7nF**
GND
GND
470kΩ*
Eventually to other
BLaITsiIcX^TL^MEDBaDsriciver
CST=100pF*** _{In case PWM via VS is performed.}
** For EMI improvement, if required.
Figure 26 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.
12.1
Further Application Information
• For further information you may contact http://www.infineon.com/
Data Sheet
33
Rev. 1.1, 2015-03-19