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| TDE1747 TDF1747 INTERFACE CIRCUIT - RELAY AND LAMP - DRIVER OPEN GROUND PROTECTION HIGH OUTPUT CURRENT ADJUSTABLE SHORT-CIRCUIT PROTECTION TO GROUND THERMAL PROTECTION WITH HYSTERESIS TO AVOID THE INTERMEDIATE OUTPUT LEVELS LARGE SUPPLY VOLTAGE RANGE : + 10 V TO + 45 V SHORT-CIRCUIT PROTECTION TO VCC DESCRIPTION The TDE/TDF1747 is a monolithic comparator designed for high current and high voltage applications, specifically to drive lamps, relays, stepping motors. These device is essentially blow-out proof. Current limiting is available to limit the peak output current to safe values, the adjustment only requires one external resistor. In addition, thermal shut down is provided to keep the I.C. from overheating. If internals dissipation becomes too great, the driver will shut down to prevent excessive heating. TDE1747 has an open ground protection. The output is also protected from shortcircuits with the positive power supply. PIN CONNECTIONS (Top view) Minidip (DP) SO14 (FP) ORDERING NUMBERS: TDE1747DP TDE1747FP TDF1747DP The device operates over a wide range of supply voltages from standard 15 V operational amplifier supplies down to the single + 12 V or + 24 used for industrial electronic systems. Minidip SO14 November 1991 1/11 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. TDE1747 - TDF1747 ABSOLUTE MAXIMUM RATINGS Symbol VCC VID VI IO Ptot Tstg Toper Supply Voltage Differantial Input Voltage Input Voltage Output Current Power Dissipation (Tamb = + 25 C) Storage Temperature Range Operating Ambient Temperature Range TDE1747 TDF1747 Parameter Value 50 * 50 50 1 Internally Limited - 65 to + 150 - 25 to + 85 - 40 to + 85 Unit V V V A W C C C (*) 60V, t a 10ms THERMAL CHARACTERISTICS Symbol Rth(j-c) Rth(j-a) Rth Rth Parameter Maximum Junction-case Thermal Resistance Maximum Junction-ambient Thermal Resistance Junction-ceramic Substrate (case glued to substrate) Junction-ceramic Substrate (case glued to substrate, substrate temperature maintened constant) SO14 SO14 Value 50 120 90 65 Unit C/W C/W C/W C/W SCHEMATIC DIAGRAM 2/11 TDE1747 - TDF1747 TEST CIRCUIT SIMPLIFIED CIRCUIT 3/11 TDE1747 - TDF1747 ELECTRICAL CHARACTERISTICS Tj = - 25 to +85 C, VCC = 8 to 45 V, unless otherwise specified (note 1). Symbol VIO IIB ICC Parameter Input Offset Voltage - (note 2) Input Bias Current Supply Current (VCC = + 24 V, IO = 0) High Level Low Level Min. - - - - Typ. 2 0.1 4 2 Max. 50 1.5 6 4 Unit mV mA mA mA VI(max) ISC Common-mode Input Voltage Range Short-circuit Current Limit (Tamb = + 25 C, VCC = + 24) RSC = 1.5 RSC = Output Saturation Voltage (output high) (RSC = 0, VI+-V I- 50 mV) IO = 300 mA, Tj = + 25 C Tj = + 150 C Low Level Output Current (VO = 0, VCC = + 24 V) Tj = + 25 C 2 - VCC-2 V TDE1747 - - 480 35 - 50 mA mA VCC-VO - - 1.15 1.05 1.4 1.3 V V IOL - 0.01 10 A Notes : 1) For operating at high temperature, the TDE/TDF1747, must be derated based on a + 150 C maximum junction temperature and a junction-ambient thermal resistance of 120 C/W for Minidip and 100 C/W for the SO14. 2) The offset voltage given is the maximum value of input voltage required to drive the output voltage within 2 V of the ground or the supply voltage. Figure 1: Available Output Current vs. Limiting Resistor Figure 2: Peak Short-circuit Output Current vs. Limiting Resistor 4/11 TDE1747 - TDF1747 Figure 3: Short-circuit Current vs. Case Temperature Figure 4: Minimum Limiting Resistor Value vs. Supply Voltage Figure 5: Output Current vs. Output Saturation Voltage Figure 6: Supply Current vs. Supply Voltage Figure 7: Supply Current vs. Junction Temperature Figure 8: Safe Operating Area (non repetitive surge) 5/11 TDE1747 - TDF1747 Figure 9: Response Time TYPICAL APPLICATIONS Figure 10: Base Circuit 6/11 TDE1747 - TDF1747 Figure 11: Output Current Extension (5A) Figure 12: Driving Low Impedance Relays (IO = 300mA) The device in the above application operates at: VCC = +45V, IO = 300mA with a heatsink such that Rth(j-a) 80C/W. The device supports an output voltage of VCC = VZ during the current cut off time, which is decreased by the zener diode. Thisvoltage must be to the maximum supply voltage. 7/11 TDE1747 - TDF1747 Figure 13: Waveforms (FIGURE 13a) (FIGURE 13b) 8/11 TDE1747 - TDF1747 SO14 PACKAGE MECHANICAL DATA DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 3.8 0.4 8.55 5.8 1.27 7.62 4.0 1.27 0.68 8 (max.) 0.15 0.016 8.75 6.2 0.35 0.19 0.5 45 (typ.) 0.336 0.228 0.050 0.300 0.157 0.050 0.027 0.344 0.244 0.1 mm TYP. MAX. 1.75 0.25 1.6 0.46 0.25 0.014 0.007 0.020 0.004 MIN. inch TYP. MAX. 0.069 0.009 0.063 0.018 0.010 9/11 TDE1747 - TDF1747 MINIDIP PACKAGE MECHANICAL DATA DIM. MIN. A a1 B b b1 D E e e3 e4 F I L Z 3.18 7.95 2.54 7.62 7.62 6.6 5.08 3.81 1.52 0.125 0.51 1.15 0.356 0.204 1.65 0.55 0.304 10.92 9.75 0.313 0.100 0.300 0.300 0.260 0.200 0.150 0.060 mm TYP. 3.32 0.020 0.045 0.014 0.008 0.065 0.022 0.012 0.430 0.384 MAX. MIN. inch TYP. 0.131 MAX. 10/11 TDE1747 - TDF1747 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 11/11 |
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