TDE1708DFT Intelligent power switch Features Low side or high side switch configuration 6 V to 48 V supply voltage range Overload and short circuit protections Internal voltage clamping Supply and output reversal protection Thermal shutdown DFN (4x4) GND and V open wire protection S Adjustable delay at switch on Indicator status led driver A signal is internally generated to block the In +5 V regulated aux. voltage signal, and prevent activation of the output switch, High burst immunity as long as an abnormal condition is detected. The power-on transition, as well as the chip over temperature and the output overcurrent, concur to Description the generation of such signal. A minimum delay of 25 ms (Typ. value) is added to the trailing edge of The TDE1708DFT is an integrated power switch such signal to ensure that a stable normal with up to 48 V power supply capability. Two situation is present when the signal disappears. output configurations are possible: The delay (of the disappearance of the block Load to GND (high side mode) signal no delay at its on set) can be further increased connecting a capacitor between pin3 Load to V (low side mode) S and ground. It can drive resistive or inductive Especially dedicated to proximity detectors, its loads. internal +5 V supply can be used to supply external circuits (See also AN495). Table 1. Device summary Order code Temp. range, CPackage Packing TDE1708DFT -25 C to +85 C DFN (4x4) Tape and reel February 2009 Rev 4 1/14 www.st.com 14Contents TDE1708DFT Contents 1 Block and pin connection diagrams 3 2 Electrical specifications 5 2.1 Thermal data . 5 2.2 Absolute maximum ratings . 5 2.3 Electrical characteristics . 6 2.4 Dynamic information 7 3 Application information 8 3.1 Adjustable input hysteresis circuit . 9 4 Package mechanical data 10 4.1 Foot print recommended . 10 4.2 DFN (4x4) mechanical data and package dimensions . 11 5 Revision history . 13 2/14