TDE1767 TDE1787 Interface circuit (relay and Lamp-driver) Features Open ground protection High output current Adjustable short-circuit protection Internal thermal protection with external reset Large supply voltage range Alarm output Input voltage can be higher than VCC Output voltage can be lower than ground (VCC - VO VCC[max]) DIP-8 Description The TDE1767, TDE1767A, TDE1787, TDE1787A are a monolithic amplifiers designed for high current and high voltage applications, specifically to drive lamps, relays, stepping motors. The devices are assentially blow-out proof. The output is prois protected from short-circuits with the positive supply or drive. In addition thermal shut down is provited to keep the IC from overheathing. An alarm output suitable for driving a LED is provited. This LED, normally on (if referred to ground), will die out or flash during an overload depending on the state of the reset input. If internal dissipation becomes too high, the driver will shut down to prevent excessive heating. The output stays null after the overheating is off, if the reset input is low. If high the output will alternatively switch-on and off until the overload is removed. Table 1. March 2007 The devices operates over a wide range voltages from standard 15V operational amplifier supplies to the single +6V or +48V used for industrial electric systems. Input voltages can be higher than in the VCC. The output is low in open ground conditions. Device summary Part number Package Packaging TDE1767DP DIP8 Tube TDE1767ADP DIP8 Tube TDE1787DP DIP8 Tube TDE1787ADP DIP8 Tube Rev 2 1/16 www.st.com 16 Contents TDE1767 - TDE1787 Contents 1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Using alarm output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 TDE1767 - TDE1787 1 Pin connections Pin connections Figure 1. Pin connection (top view) ALARM OUTPUT 1 8 CURRENT LIMIT INVERTING INPUT 2 7 VCC NON INVERTING INPUT 3 6 OUTPUT GND 4 5 RESET D03IN1475 2 Maximum ratings 2.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol TDE1767 TDE1787 Unit Supply voltage 60 50 V VID Input differential voltage 60 50 V - 10 to + 60 - 10 to + 50 V 1.3 1.2 A Vl Input voltage IO Output current Vl(reset) Reset input voltage - 0.5 to + 60 - 0.5 to + 50 V IOA Alarm output current - 10 to + 20 - 10 to + 20 mA Ptot Power dissipation Tstg Internally Limited mW Operating ambient temperature range - 25 to + 85 - 25 to + 85 C Storage temperature range - 65 to + 150 - 65 to + 150 C Thermal data Table 3. Symbol Note: TDE1767A TDE1787A VCC Toper 2.2 Parameter Thermal data Parameter Value Unit Rth(JC) Thermal resistance junction-case max 30 C/W Rth(JA) Thermal resistance junction-ambient max 80 C/W Devices bonded on a 40 cm2 glass-epoxy printed circuit 0.15 cm thick with 4 cm2 of copper. 3/16 Electrical characteristcs 3 TDE1767 - TDE1787 Electrical characteristcs TDE1767A: - 25C TA 85C, 6V VCC 55V, Io 500mA, TJ 150C TDE1767: - 25C TA 85C, 6V VCC 45V, Io 500mA, TJ 150C TDE1787A: - 25C TA 85C, 6V VCC 55V, Io 300mA, TJ 150C TDE1787: 25C TA 85C, 6V VCC 45V, Io 300mA, TJ 150C Unless otherwise specified. Table 4. Symbol VIO Electrical characteristics Parameter Input offset voltage Test condition Min. Typ. Max. Unit 2 50 mV 5.8 8 mA Output high (VCC = VCCmax, (TJ = 150C) 5 7 mA Output low (VCC = VCCmax, (TA = 25C) 1.5 4 mA 15 100 A (note 1) (measured on pin 4) Output high (TA = 25C) ICC IIB Imput bias current VCM Common-mode input voltage range TDE1787A, TDE1767A TDE1787, TDE1767 1 1 60 45 V V VI Input voltage range Vref 1V (figure1, note2) TDE1787A, TDE1767A TDE1787, TDE1767 1 1 60 45 V V ISC Short circuit output current VCC = 35V, t = 10ms TDE1767A: RSC = 0.22 TDE1787A: RSC = 0.33 Vsense Output limit sense voltage VO = VCC -2V, t = 10ms 130 150 170 mV Vsense Output limit sense voltage VO = 0V, t = 10ms 120 140 165 mV VO(sat) Output high VI+- VI- 50mV; RSC = 0; VCC = 30V TDE1787A, TDE1767A: TJ = 25C TDE1787, TDE1767: TJ = 25C Output saturation voltage TDE1787A, TDE1767A: TJ = 150C TDE1787, TDE1767: TJ = 150C 1 1 1.1 1.2 V V 1.1 1.1 1.2 1.3 V V 100 A IOL 4/16 Power supply current Output leakage current Output low 700 380 mA mA TDE1767 - TDE1787 Table 4. Symbol IA Ireset Electrical characteristcs Electrical characteristics (continued) Parameter Available alarm output current Test condition Min. Typ. Output source current VAH = VCC-2.5V -4 -5 mA Output sink current (in thermal shut-down) VA = 1.4V 5 10 mA Reset input current 2 Vth-reset Reset threhold Output leakage current Note: open ground Max. 40 Unit A 1.4 A 10 A 1 The offset voltage given is the maximum value of different input voltage reguired to drive the output voltage whitin 2 V of the ground or the supply voltage. 2 Input voltage range is indipendent of the supply voltage. 5/16 Schematic diagrams 4 TDE1767 - TDE1787 Schematic diagrams Figure 2. - Schematic diagram + 2 3 1 210 3K 600 2K 7 20 K 5K 8 300 20 pF 2K 200 2K 6 10 K 3.6K 1.8 K 1.1K 8.4K 20 K 300 20 K 10 K 3 K 5 4 D03IN1476 Figure 3. Equivalent schematic 7 G1 2 INPUTS 3 ALARM OUTPUT RESET VCC RSC G2 8 - AMP CURRENT LIMIT + 1 SHORT-CIRCUIT PROTECTION 6 5 OUTPUT THERMAL PROTECTION RL 4 GROUND D03IN1477 Vl VCC +6V