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october 2006 rev 2 1/15 15 TDE1707DFT intelligent power switch features 0.5a output current low side or high side switch configuration 6v to 48v supply voltage range overload and short circuit protections internal voltage clamping supply and output reversal protection thermal shutdown gnd and v s open wire protection adjustable delay at switch on indicator status led driver +5v regulated aux. voltage high burst immunity description the TDE1707DFT is a 0.5a integrated power switch with up to 48v power supply capability. two output configurations are possible: load to gnd. (high side mode) load to vs (low side mode) especially dedicated to pr oximity detectors, its in- ternal +5v supply can be used to supply external circuits (see also an495). a signal is inter-nally generated to block the in signal, and prevent activation of the output switch, as long as an ab- normal condition is detected. the power-on tran- sition, as well as the chip over temperature and the output overcurrent, concur to the generation of such signal. a minimum delay of 25ms (typ.value) is added to the trailing edge of such signal to ensure that a stable normal situation is present when the signal disappears. the delay (of the disappearance of the block signal; no delay at its on set) can be further increased connecting a capacitor between pin3 and ground. it can drive resistive or inductive loads.. order codes dfn (4x4) part number temp range, cpackage packing TDE1707DFT -25c to +85c dfn(4x4) tape & reel www.st.com obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
contents TDE1707DFT 2/15 contents 1 block & 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
TDE1707DFT block & pin connection diagrams 3/15 1 block & pin connection diagrams figure 1. block diagram obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
block & pin connection diagrams TDE1707DFT 4/15 table 1. pin functions note: lead frame can be connected to ground. figure 2. pin connection diagram (top view) pin n o function 1 led driver 2 high side output 3 delay capacitance source 4 ground 5 input 6 reg. voltage source 7 supply voltage 8 low side output obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
TDE1707DFT electrical specifications 5/15 2 electrical specifications 2.1 thermal data table 2. thermal data 2.2 absolute maximum ratings table 3. absolute maximum ratings symbol description value unit r thja thermal resistance junction-ambient max. 32 (1) 1. soldered to a 4 layer board with 4 vias in the pad. c/w r thjc thermal resistance junction-case max. 1.2 c/w symbol parameter value unit v s supply voltage 50 v v s supply reverse voltage 50 v i o output current internally limited a v reg regulated voltage pin 0 to 7 v v delay delay capacitor source pin 0 to 5 v v o output diff. voltage 55 v v i input voltage -10 to 50 v t j junction operating temperature internally limited c t stg storage temperature range -55 to 150 c p tot power dissipation internally limited mw e i energy inductive load 100 mj obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
electrical specifications TDE1707DFT 6/15 2.3 electrical characteristics table 4. electrical characteristics (v s = 24v ; t j = - 25 to +85c unless otherwise specified). symbol parameter test conditions min. typ. max. unit v s supply voltage 6 48 v i sr supply reverse current v sr = ?48v 1.5 ma i q quiescent current i reg = i led = 0; v i < 2v; v s = 6 to 48v 1.5 ma i o output current v s = 6v to 32v 500 ma v s = 32v to 48v 300 ma v sat output voltage drop v 8-2 i o = 500ma 1.1 1.6 v i scls short circuit current in low side configuration 0.7 1.5 a i schs short circuit current in high side configuration 0.55 1 a v cl internal voltage clamp i cl = 10ma 55 70 v i olk output leakage (pin 2) v i < 2v; v o = 0 to v s (pin 8) 100 300 100 a a v ith input voltage threshold 2 3 v v ihis input threshold hysteresis 300 mv i lk input current v i = 5v 25 a v reg regulated output voltage i reg < 5ma 4.555.5v i scr short circuit regulated 6 30 50 ma i reg ouput regulator current v s = 35v v s = 48v 6 4 ma ma i old current source sink led driver output on ( )234ma v old voltage drop led driver i os = 2ma () 1.2 1.6 v oldlk led driver (off) leak. v i < 2v; r l < 1k ? 10 a i dch del. cap. charge current t j = 25c 246 a v dth delay voltage trigger 4 v t tsd thermal shutdown temperature 180 c obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
TDE1707DFT electrical specifications 7/15 2.4 dynamic information table 5. dynamic information (v s = 24v ; t j = 25c ; r l = 48 ? ). symbol parameter test conditions min. typ. max. unit t on propagation turn on time v i = 0 to 5v 15 s t off propagation turn off time 15 s t don delayed turn on time / nf delay capacitor 0.65 1 2 ms t d min minimum delayed t on delay capacitor = 0 25 s 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 (i old 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 v cc less than 1.5v, the output is sensed in "off" state and the led driver is disabled. if instead pin 8 differs from v cc more than 3v (the output comparator threshold value plus the drop voltage on the led), then th e output is sensed "o n" and the driver will force the current on the led. figure 3. low side driver topology f igure 4. high side driver topology tde1707 tde1707 obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
TDE1707DFT application information 9/15 figure 5. input thresholds voltage vs temperature (v s = 24v) figure 6. saturation voltage vs temperature (v s = 24v; i o = 500ma) figure 7. quiescent current) vs temperature (v s = 24v) obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
application information TDE1707DFT 10/15 3.1 adjustable input hysteresis circuit the TDE1707DFT is a device realized in bipolar technology and therefore it has the usual problems of temperature compensation that such technology involves; de spite all it maintains an input dynamics within 1v over industrial temperatures range. in all input voltage ra nge it will guarantee a high impedanc e of 1mohm determ ining an input current about 2ua. exploiting this input high impedance is possible co nnects a sensor directly on it and bypass the obstacle of active signal conditioning circuit us ing a voltage firm point as ground of sensor, the delay capacitor, connected on the pin 3, as low pass filter and capacitor on vreg pin to minimize the noise on it and protect for errors the low-voltage internal circuits, according an495. in figure 8. the input external network is optimized for accepting both a sensor with ground connected to the body and a sensor with independent ground. in order to ground the body of the sensor , j1 has to be shorted , while j2 opened and connect the sensor on m3; in case of independent ground j1 must be opened, j2 shorted and the sensor connected on m4. dl1 indicate commutation status of the device output and c3 realize a simple output filtering in case is used an inductive load. with c2 about 10nf we obtain a good filtering and immunity from input voltage noise. c4 is 4,7nf according an495. r2 is an optional resistor plugged only when th e sensor needs to adapt its impedance with the input impedance of device. . figure 8. application circuit for adjustable input hysteresis tde1707 obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
TDE1707DFT package mechanical data 11/15 4 package mechanical data in order to meet environmental requirements, st offers these devices in ecopack ? packages. these packages have a lead-free second level interconnect . the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an st trademark. ecopack specifications are available at: www.st.com. obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
package mechanical data TDE1707DFT 12/15 table 6. dfn (4x4) mechanical data & package dimensions dimensions ref. mm typ min max a 0.90 0.80 1 a1 0.02 0 0.05 a3 0.20 b 0.30 0.23 0.38 d 4 3.90 4.10 d2 3 2.82 3.23 e 4 3.90 4.10 e2 2.20 2.30 e0.80 l 0.50 0.40 0.60 figure 9. package dimension sitting plane obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
TDE1707DFT package mechanical data 13/15 figure 10. foot print recommended obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
revision history TDE1707DFT 14/15 5 revision history table 7. revision history date revision changes 19-jul-2006 1 initial release 03-oct-2006 2 added curves on page 9, inserted values i scls, i schs in ta b l e 4 . obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)
TDE1707DFT 15/15 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2006 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com obsolete product(s) - obsolete product(s) obsolete product(s) - obsolete product(s)

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