TDE1707DFT

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 VS open wire protection ■ Adjustable delay at switch on ■ Indicator status LED driver ■ +5V regulated AUX. voltage ■ High burst immunity DFN (4x4) c u d The TDE1707DFT is a 0.5A Integrated Power Switch with up to 48V Power supply capability. Two output configurations are possible: ) s ( ct ● Load to GND. (High Side Mode) ● Load to VS (Low side Mode) r P Order codes e t e l o s b O u d o o r P Especially dedicated to proximity detectors, its internal +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 abnormal condition is detected. The power-on transition, 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.. e t le Description ) s t( o s b O - Part number Temp range, ° C Package Packing TDE1707DFT -25°C to +85°C DFN(4x4) Tape & Reel October 2006 Rev 2 1/15 www.st.com 15 TDE1707DFT Contents Contents 1 Block & pin connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 2.1 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.4 Dynamic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 Adjustable input hysteresis circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 c u d ) s t( 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 e t le ) s ( ct u d o r P e t e l o s b O 2/15 o s b O - o r P TDE1707DFT 1 Block & pin connection diagrams Block & pin connection diagrams Figure 1. Block diagram c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 3/15 TDE1707DFT Block & pin connection diagrams Table 1. Pin functions Pin No Note: 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 Lead frame can be connected to ground. Figure 2. Pin connection diagram (top view) c u d e t le ) s ( ct u d o r P e t e l o s b O 4/15 o s b O - o r P ) s t( TDE1707DFT Electrical specifications 2 Electrical specifications 2.1 Thermal data Table 2. Thermal data Symbol Description Value Unit RthJA Thermal resistance junction-ambient Max. 32(1) °C/W RthJC Thermal resistance junction-case Max. 1.2 °C/W 1. Soldered to a 4 layer board with 4 vias in the pad. 2.2 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Parameter VS Supply voltage VS Supply reverse voltage Io Output current Vreg Vdelay Regulated voltage pin e t le Delay capacitor source pin Output diff. voltage Vi Input voltage TJ Junction operating temperature (t s) Storage temperature range Ptot Power dissipation od Energy inductive load r P e so b O - Tstg uc uc od 50 Pr ) s t( Unit 50 Vo Ei Value V V internally limited A 0 to 7 V 0 to 5 V 55 V -10 to 50 V internally limited °C -55 to 150 °C internally limited mW 100 mJ t e l o s b O 5/15 TDE1707DFT Electrical specifications 2.3 Electrical characteristics Table 4. Symbol Isr Supply reverse current Iq Quiescent current Io Output current Min. Typ. Max. Unit 48 V 1.5 mA 1.5 mA Vs = 6V to 32V 500 mA Vs = 32V to 48V 300 mA 1.6 V 6 VSR = –48V Ireg = Iled = 0; Vi < 2V; VS = 6 to 48V Vsat Output voltage drop V8-2 ISCLS Short circuit current in low side configuration 0.7 1.5 A ISCHS Short circuit current in high side configuration 0.55 uc A Io = 500mA 1.1 Vcl Internal voltage clamp ICL = 10mA Iolk Output leakage (Pin 2) Vi < 2V; Vo = 0 to Vs (Pin 8) Vith Input voltage threshold Vihis Input threshold hysteresis Vreg Regulated output voltage Ireg < 5mA Iscr Short circuit regulated Ireg Ouput regulator current o r P e t e l o Oldlk (t s) Voltage drop LED driver Ios = 2mA (±) LED driver (off) leak. Vi < 2V; RL < 1KΩ Vdth Delay voltage trigger TTSD Thermal shutdown temperature od 100 2 70 V 300 100 µA µA 3 V mV 2 5 µA 4.5 5 5.5 V 6 30 50 mA 6 4 mA mA 3 4 mA 1.2 1.6 V 10 µA 6 µA 2 2 TJ = 25°C ) s t( 300 Vs = 48V Output ON (±) Del. cap. charge current 1 Vs = 35V Current source sink LED driver Idch Pr so b O - Vi = 5V c u d 55 e t le Input current Vold 6/15 Test conditions Supply voltage Iold O Parameter Vs Ilk bs Electrical Characteristics (VS = 24V ; TJ = - 25 to +85°C unless otherwise specified). 4 4 V 180 °C TDE1707DFT 2.4 Electrical specifications Dynamic information Table 5. Dynamic information (VS = 24V ; TJ = 25°C ; RL = 48Ω). Symbol Parameter ton Propagation turn ON time toff Propagation turn OFF time tdon Delayed turn ON time / NF delay capacitor td min Test conditions Min. Vi = 0 to 5V 0.65 Minimum delayed ton Typ. Max. 15 µs 15 µs 1 2 25 delay capacitor = 0 c u d e t le ) s ( ct Unit ms µs ) s t( o r P o s b O - u d o r P e t e l o s b O 7/15 TDE1707DFT Application information 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 c u d e t le TDE1707 TDE1707 ) s ( ct u d o r P e t e l o s b O 8/15 o r P o s b O - ) s t( TDE1707DFT Figure 5. Figure 7. Application information Input thresholds voltage vs temperature (VS = 24V) Figure 6. Saturation voltage vs temperature (VS = 24V; IO = 500mA) c u d Quiescent current) vs temperature (VS = 24V) e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 9/15 TDE1707DFT Application information 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; despite all it maintains an input dynamics within 1V over industrial temperatures range. In all input voltage range it will guarantee a high impedance of 1Mohm determining an input current about 2uA. Exploiting this input high impedance is possible connects a sensor directly on it and bypass the obstacle of active signal conditioning circuit using 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. ) s t( 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. c u d R2 is an optional resistor plugged only when the sensor needs to adapt its impedance with the input impedance of device. . Figure 8. Application circuit for adjustable input hysteresis e t le o s b TDE1707 O ) (s t c u d o r P e t e l o s b O 10/15 o r P TDE1707DFT 4 Package mechanical data 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. c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 11/15 TDE1707DFT Package mechanical data Table 6. DFN (4x4) Mechanical data & package dimensions Dimensions Ref. Figure 9. 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 3.90 4.10 E 4 E2 2.20 e 0.80 L 0.50 2.30 0.40 0.60 Package dimension c u d e t le ) s ( ct u d o r P e t e l o s b O 12/15 o s b O - Sitting plane o r P ) s t( TDE1707DFT Package mechanical data Figure 10. Foot print recommended c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 13/15 TDE1707DFT Revision history 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 ISCLS, ISCHS in Table 4. c u d e t le ) s ( ct u d o r P e t e l o s b O 14/15 o s b O - o r P ) s t( TDE1707DFT Please Read Carefully: Information in this document is provided solely in connection with ST products. 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