TDE1708DFT datasheet(8/14 Pages) STMICROELECTRONICS

Part #	TDE1708DFT

Description	Intelligent power switch

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

8 / 14 page

Application information

TDE1708DFT

8/14

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

TDE1708DFT

TDE1708DF

TDE1708DFT

TDE1708DFT Datasheet(PDF) 8 Page - STMicroelectronics