L9820D

L9820 ® HIGH SIDE DRIVER OPERATING SUPPLY VOLTAGE UP TO 25V DC CURRENT 0.3A RON < 800mΩ DIAGNOSTIC AND PROTECTION FUNCTIONS µP COMPATIBLE ENABLE INPUT FOR STAND-BY MODE DESCRIPTION The L9820 High Side Driver realized with Multipower - BCD mixed technology, drives resistive or inductive loads with one side connected to ground. The ENABLE input is TTL compatible and a diagnostic output provides an indication of short circuit and device status (thermal and overvoltage shutdown). Onchip thermal protection and short circuit protection are provided. MULTIPOWER BCD TECHNOLOGY Minidip SO8 ORDERING NUMBERS: L9820 L9820D BLOCK DIAGRAM 40mΩ September 2013 1/6 L9820 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit 50 Vdc Reverse Bias Current at -1.3V Input Voltage (to GND) –0.46 –0.3 to 20 A V Diag. Output Voltage (to GND) Output Voltage (to GND) –0.3 to 20 –0.3 to 25 V V VS Max Forward Voltage IR V5 V8 V1 I4 I5 Supply Current Enable Input Current 0.5 mA I8 I1 Diag. Out Current (sink) 10 mA Output Current Operation Temperature Internally limited –40 to 85 °C –55 to 150 °C 150 °C Top Tj, Tstg Internally limited Junction and Storage Temperature Range Detecting Temperature Tjp PIN CONNECTION (Top views) Minidip SO8 THERMAL DATA Symbol Parameter Rth j-amb Thermal Resistance Junction-ambient Max. Minidip SO8 Unit 100 200 °C/W TRUTH TABLE H: high level L: low level 2/6 ENABLE FUNCTION DIAG. STATUS POWER STATUS L H H Operating OFF Normal Operation Overvoltage Protection ON H H L L H L H H Overcurrent Protection ON Overtemperature Protection ON L L L L L9820 PIN FUNCTIONS N. Name 1 POWER OUTPUT 4 POWER SUPPLY 5 ENABLE INPUT 7 GROUND 8 DIAGNOSTIC FEEDBACK Description The device is provided with short circuit protection. Supply voltage input. TTL compatible input. High level on this pin means output current ON. The low level voltage switches off the charge pump, the power stage and the diagnostic output reducing to the minimum value the quiescent current. This pin must be connected to ground. The diagnostic circuit is active in input high level condition. This output detects with Tipically 50µs delay at Tamb = 25°C the following faults: – Overvoltage condition. – Thermal shutdown. – Short circuit. The power stage current is internally limited at 1.5A. The diagnostic output is active low. The diagnostic delay time allows to avoid spurious diagnosys(i.e.: turn ON overcurrent, overvoltage spikes etc.). ELECTRICAL CHARACTERISTICS (VS = 14.4V, –40°C≤ Tj ≤ +85°C, unless otherwise specified.) Symbol Parameter VS Ron Operating Supply Voltage On Resistance Ioff Off State Supply Current Ion VEL On State Supply Current VEH IE Ileakd Vsatd Enable High Level Enable Current Diagnostic Output Leakage Current Test Condition Min. Typ. Max. Unit 0.6 25 0.8 1.2 V Ω Ω 130 300 4 µA µA mA 6 Input > 2V, Tj = 25°C Input > 2V, Full T range Tj < 35°C Tj = 85°C Enable Low Level 0.8 V 0V < Vi