TDE1798DP STMicroelectronics

TDE1798 0.5A INTELLIGENT POWER SWITCH HIGH OUTPUT CURRENT 500mA SHORT-CIRCUIT PROTECTION UP TO V = +35V CC INTERNAL THERMAL PROTECTION WITH EXTERNAL RESET AND SYNCRONIZATION CAPABILITY OPEN GROUND PROTECTION OUTPUT VOLTAGE CAN BE LOWER THAN Minidip GROUND FOR FAST INDUCTIVE LOAD DE- ORDERING NUMBER: TDE1798DP MAGNETIZATION DIFFERENTIAL INPUTS FOR ANY LOGIC SYSTEM COMPATIBILITY INPUT VOLTAGE CAN BE HIGHER THAN V CC LARGE SUPPLY VOLTAGE RANGE FROM 6V TO 35V the driver will shut down to prevent excessive SINK AND SOURCE ALARM OUTPUTS heating. The output stays null after the overload is NO NEED FOR EXTERNAL CLAMPING DI- off, if the reset input is low. If high, the output will ODE FOR DEMAGNETIZATION ENERGY UP alternatively switch on and off until the overload is TO 150mJ removed. SEVERAL DEVICES CAN BE CONNECTED Higher current can be obtained by paralleling the IN PARALLEL outputs of several devices. In this case, the de- vices can be reactivated simultaneously after an DESCRIPTION overload if their reset input are connected in par- The TDE1798 is an interface circuit delivering allel. high currents and capable of driving any type of The device operates over a wide range of supply loads. voltages from standard 15 operational amplifier The output is protected from short-circuits with supplies to the single 6V or +35V used for indus- the positive supply or ground. In addition thermal trial electronic systems. Input voltage can be shut down is provided to keep the IC from over- higher than the V . The output is low in open CC heating. If internal dissipation becomes too high, ground conditions. PIN CONNECTION (Top view) September 2003 1/14TDE1798 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Test Conditions Unit V Supply Voltage 50 V CC V Input Differential Voltage 50 V ID V Input Voltage -30 to +50 V I V Reset Input Voltage VCC -50 to V V I(reset) CC IO Output Current internally limited A P Power Dissipation Internally Limited mW tot Reset Input Sink Current (in thermal shut-down) 15 mA 6 W Repetitive Maximum Demagnetization Energy - 10 Operations 150 mJ D T Operating Ambient Temperature Range -25 to -85 C op T Storage Temperature Range -65 to +150 C stg I Alarm Output Sink Current 25 mA A(sink) I Alarm Output Source Current 12 mA A(source) BLOCK DIAGRAM 2/14