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PDF TLD7395EK Data sheet ( Hoja de datos )
| Número de pieza | TLD7395EK | |
| Descripción | LIN LED Driver | |
| Fabricantes | Infineon | |
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Infineon® LIN LED Driver
TLD7395EK
High Side Driver IC
3 channels
Data Sheet
Rev. 1.0, 2012-07-02
Automotive Power
1 page  
TLD7395EK
Table 1 Product Summary
Operating voltage
Extended operating voltage (LIN-transceiver
active)
Minimum supply voltage range for operation,
(Outputs active, LIN-transceiver off)
Maximum voltage
Maximum output current to drive external NPN-
transistors
Current consumption in sleep mode
Protective functions
- ESD protection
- Under voltage lock out
- Over Load protection
- Over temperature prewarning
- Over temperature protection
VS(nom)
VS(ext)
7 V … 18 V
6 V… 34V
VS(PD)
4.8 V
V VS(max), OUTx(max)
IPWR(nom,max)
40 V
40 mA
IS(sleep,typ)
16 µA
Overview
Diagnostic functions
- LIN communication error detection
- Over load detection via LIN message
Applications
Designed for standard LED lighting applications such as ambient lighting, exterior lighting, interior illumination,
dome light, and dash board. Especially well suited for RGB color mixing applications.
Data Sheet
5 Rev. 1.0, 2012-07-02
5 Page 
TLD7395EK
State Machine and Operating Modes
Table 2
Symbol
tLIN(idle)
tPOR
State-Chart Legend
Comment
Symbol
LIN communication time out, Pos. 6.3.23 Tj(OT)
Power-ON Reset delay, Pos. 5.3.4
Tj(warn)
Comment
Output deactivation threshold, Pos. 9.5.11
Output prewarning threshold, Pos. 9.5.10
5.1 Operating Modes
5.1.1
Normal Mode
Normal Mode is the default operating state and is automatically entered after the device goes through a power-on
reset.
During normal mode the device interprets LIN bus messages in order to control the set of intensities (color points)
and intensity of the RGB diode. The interpreted LIN instructions include:
• Selection of 1 of 16 average current set points stored in the integrated NVM
• Intensity setting
• Intensity ramp up/down for theater dimming effects
• Selection of the individual (RGB) intensities (e.g. for calibration)
• Request to respond to LIN-master with status and error diagnostic information
• Go to sleep mode
Note: A LIN-communication at frequencies around fFLASH during normal mode (VS < VS(PGM,L)) or in programming
mode (VS(PGM,L) < VS < VS(PGM,U), (Pos. 8.5.1 and Pos. 8.5.2)) without being the subscriber, brings the device
into a stop-mode. A LIN-communication of the device is not possible any more until the LIN communication
time out fLIN(idle) (Pos. 6.3.23) is exceeded and the device enters the sleep mode, or a power-on reset is
done.
5.1.2
Programming Mode (Flash-Mode)
This mode is used to program the NVM. More details on the NVM programming can be found in Chapter 8.2. To
enter this mode the user has to apply a supply voltage VS within the programming voltage range VS(PGM,L) < VS <
VS(PGM,U) (Pos. 8.5.1 and Pos. 8.5.2) for longer than the programming settle time tPGM(s) (Pos. 8.5.3). This also
enables the LIN-transceiver flash-mode for higher speed data transmission. The maximum transmission rate on
the LIN-bus can be increased to fFLASH (Pos. 6.3.24). In this operation mode all three output stages are turned off.
Note: Please consider the important note in Chapter 5.1.1.
5.1.3
Sleep Mode
In order to reduce the current consumption the LIN LED Driver IC offers a sleep mode. In sleep mode the quiescent
current on VS and the leakage current on the pin LIN are cut back to a minimum.
To switch the LIN LED Driver IC from normal operation mode to sleep mode, the LIN-message “Go to Sleep” has
to be received by the LIN LED Driver IC.
While the LIN LED Driver IC is in sleep mode the following functions are available:
• The output stage is disabled and the internal LIN-bus terminations are switched off (high impedance on the pin
LIN). The internal current source on the LIN-pin ensures that the levels on the pin LIN remains recessive and
protects the LIN-network against accidental bus Wake-Up events.
• The receiver stage is turned off.
The LIN-bus wake-up comparator is active and turns the LIN LED Driver IC to normal operation mode in case of
a bus wake-up event.
Data Sheet
11 Rev. 1.0, 2012-07-02
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLD7395EK.PDF ] | |
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