TDE1707DFT datasheet(8/15 Pages) STMICROELECTRONICS

Part #	TDE1707DFT

Description	Low side or high side switch configuration

PDF	15 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Application information

TDE1707DFT

8/15

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

TDE1707DFT Datasheet(PDF) 8 Page - STMicroelectronics