TLD1313EL Datasheet, PDF (28/31 Pages) Infineon Technologies AG – 3 Channel High Side Current Source Basic LED Driver

TLD1313EL
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.
Vbat
BCM
channel 1
I N1
IS1
SEN
internal
power
s upply
ESD
prot ect ion
logic
load current
sense
gate control
&
charge pump
open load
det ect ion
tem perat ure
sensor
PROFET
clamp for
inductive load
multi step
load current
lim it ation
VBB
OUT1
channel 2
I N2
IS2
control and protection circuit
equivalent to
channel 1
R G ND
GND
OUT2
VBATT
Cmo d =2.2µF
ISO -Pulse
protection circuit
depending on
re q u i re m e n ts
10kΩ
CVS=4.7nF
VS
Internal
supply
EN
Thermal
protection
Output
control
RSET
IN_SET Current
adjust
Basic LED Driver
Status
ST
OUT3
OUT2
OUT1
4.7nF** 4.7nF** 4.7nF**
GND
GND
470kΩ*
CST=100pF**
* In case PWM via VS or EN is performed.
** For EMI improvement, if required.
10kΩ
CVS =4.7nF
VS
Internal
supply
EN
Thermal
protection
Output
control
RSET
IN_SET Current
adjust
Basic LED Driver
Status
ST
OUT3
OUT2
OUT1
4.7nF** 4.7nF** 4.7nF**
GND
CST =100pF**
10kΩ
CVS=4.7nF
VS
Internal
supply
EN
Thermal
protection
Output
control
RSET
IN_SET Current
adjust
Basic LED Driver
Status
ST
OUT3
OUT2
OUT1
4.7nF** 4.7nF** 4.7nF**
V ZD >V O U T(C C)
GND
R<50Ω
CST=100pF**
Figure 20 System Diagram TLD1313EL in combination with mutiple devices and two channel usage for
device at the right side
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. 1.0, 2013-08-08