VN7008AJTR

VN7008AJ High-side driver with CurrentSense analog feedback for automotive applications Datasheet - production data − − − − − Features Max transient supply voltage VCC 40 V Operating voltage range VCC 4 to 28 V Typ. on-state resistance (per Ch) RON 8.5 mΩ Current limitation (typ) ILIMH 96 A Standby current (max) ISTBY 0.5 µA • • • • Automotive qualified General − Single channel smart high side driver with CS analog feedback − Very low standby current − Compatible with 3 V and 5 V CMOS outputs CS diagnostic functions − Analog feedback of: load current with high precision proportional current mirror − Overload and short to ground (power limitation) indication − Thermal shutdown indication − OFF-state open-load detection − Output short to VCC detection − Sense enable/ disable Protections − Undervoltage shutdown − Overvoltage clamp March 2016 − Applications • • All types of Automotive resistive, inductive and capacitive loads Specially intended for Automotive Headlamps Description The device is a single channel high-side driver manufactured using ST proprietary VIPower® technology and housed in PowerSSO-16 package. The device is designed to drive 12 V automotive grounded loads through a 3 V and 5 V CMOS-compatible interface, and to provide protection and diagnostics. The device integrates advanced protective functions such as load current limitation, overload active management by power limitation and overtemperature shutdown with configurable latch-off. A FaultRST pin unlatches the output in case of fault or disables the latch-off functionality. A sense enable pin allows OFF-state diagnosis to be disabled during the module low-power mode as well as external sense resistor sharing among similar devices. DocID027771 Rev 4 This is information on a product in full production. Load current limitation Self limiting of fast thermal transients Configurable latch-off on overtemperature or power limitation with dedicated fault reset pin Loss of ground and loss of VCC Reverse battery with external components Electrostatic discharge protection 1/42 www.st.com Contents VN7008AJ Contents 1 Block diagram and pin description ................................................ 5 2 Electrical specification.................................................................... 7 3 4 2.1 Absolute maximum ratings ................................................................ 7 2.2 Thermal data ..................................................................................... 8 2.3 Main electrical characteristics ........................................................... 8 2.4 Waveforms ...................................................................................... 16 2.5 Electrical characteristics curves ...................................................... 19 Protections..................................................................................... 23 3.1 Power limitation ............................................................................... 23 3.2 Thermal shutdown........................................................................... 23 3.3 Current limitation ............................................................................. 23 3.4 Negative voltage clamp ................................................................... 23 Application information ................................................................ 24 4.1 GND protection network against reverse battery............................. 24 4.1.1 5 Diode (DGND) in the ground line ..................................................... 25 4.2 Immunity against transient electrical disturbances .......................... 25 4.3 MCU I/Os protection........................................................................ 25 4.4 CS - analog current sense .............................................................. 26 4.4.1 Principle of CurrentSense signal generation .................................... 27 4.4.2 Short to VCC and OFF-state open-load detection ........................... 29 Package and PCB thermal data .................................................... 31 5.1 PowerSSO-16 thermal data ............................................................ 31 6 Maximum demagnetization energy (VCC = 16 V) ........................ 34 7 Package information ..................................................................... 35 8 9 2/42 7.1 PowerSSO-16 package information ................................................ 35 7.2 PowerSSO-16 packing information ................................................. 37 7.3 PowerSSO-16 marking information ................................................. 39 Order codes ................................................................................... 40 Revision history ............................................................................ 41 DocID027771 Rev 4 VN7008AJ List of tables List of tables Table 1: Pin functions ................................................................................................................................. 5 Table 2: Suggested connections for unused and not connected pins ........................................................ 6 Table 3: Absolute maximum ratings ........................................................................................................... 7 Table 4: Thermal data ................................................................................................................................. 8 Table 5: Power section ............................................................................................................................... 8 Table 6: Switching....................................................................................................................................... 9 Table 7: Logic Inputs................................................................................................................................. 10 Table 8: Protections .................................................................................................................................. 10 Table 9: CurrentSense .............................................................................................................................. 11 Table 10: Truth table ................................................................................................................................. 15 Table 11: CurrentSense multiplexer addressing ...................................................................................... 16 Table 12: ISO 7637-2 - electrical transient conduction along supply line................................................. 25 Table 13: CurrentSense pin levels in off-state .......................................................................................... 29 Table 14: PCB properties ......................................................................................................................... 31 Table 15: Thermal parameters ................................................................................................................. 33 Table 16: PowerSSO-16 mechanical data................................................................................................ 35 Table 17: Reel dimensions ....................................................................................................................... 37 Table 18: PowerSSO-16 carrier tape dimensions .................................................................................... 38 Table 19: Device summary ....................................................................................................................... 40 Table 20: Document revision history ........................................................................................................ 41 DocID027771 Rev 4 3/42 List of figures VN7008AJ List of figures Figure 1: Block diagram .............................................................................................................................. 5 Figure 2: Configuration diagram (top view)................................................................................................. 6 Figure 3: Current and voltage conventions ................................................................................................. 7 Figure 4: IOUT/ISENSE versus IOUT....................................................................................................... 13 Figure 5: Current sense accuracy versus IOUT ....................................................................................... 13 Figure 6: Switching times and Pulse skew ............................................................................................... 14 Figure 7: CurrentSense timings (current sense mode) ............................................................................. 14 Figure 8: TDSTKON.................................................................................................................................. 15 Figure 9: Latch functionality - behavior in hard short circuit condition (TAMB