TDE1708DFT View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDE1708DFT' PDF : 14 Pages View PDF
Application information
3
Application information
TDE1708DFT
The LED driver tells the output status. It can source or sink current (Iold typ = 3 mA),
according to the output configuration chosen. The thresholds, represented by the output
comparator in the block diagram, are set at about 1.5 V - 2 V.
For instance, in the high side load case of the Application Circuit, when the voltage on pin 8
(the output) differs from VCC less than 1.5 V, the output is sensed in “OFF” state and the
LED driver is disabled.
If instead pin 8 differs from VCC more than 3 V (the output comparator threshold value plus
the drop voltage on the LED), then the output is sensed “ON” and the driver will force the
current on the LED.
Figure 3. Low side driver topology
Figure 4. High side driver topology
TDE1708DFT
TDE1708DFT
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