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TDE1707DFT Datasheet(PDF) 8 Page - STMicroelectronics |
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TDE1707DFT Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 15 page Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) Application information TDE1707DFT 8/15 3 Application information The LED driver tells the output status. It can source or sink current (Iold typ = 3mA), according to the output configuration chosen. The thresholds, represented by the output comparator in the Block Diagram, are set at about 1.5V - 2V. 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 1.5V, the output is sensed in "OFF" state and the LED driver is disabled. If instead pin 8 differs from VCC more than 3V (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 TDE1707 TDE1707 |
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