L9823 STMicroelectronics

L9823 Octal low-side driver for bulb, resistive and inductive loads with serial input control, output protection and diagnostic Datasheet - production data Output status data available on the SPI using 8-bit I/O protocol up to 3.0 MHz Low standby current with reset = low (typ. 35 A VDD) Open load detection (outputs off) Single V logic supply DD 0 03 High EMS immunity and low EME (controlled SO24 output slopes) Full functionality of the remaining device at negative voltage drop on outputs (-1.5 V or -3.0 A) Output mode programmable for sustained Features current limit or shutdown Outputs current capability up to 0.5 A Cascadable SPI control for outputs Description Reset function with reset signal or L9823 is a octal low-side driver circuit, dedicated undervoltage at V DD for automotive applications. Programmable intrinsic output voltage Output voltage clamping is provided for flyback clamping at typ. 50 V for inductive switching current recirculation, when inductive loads are Overcurrent shutdown with latch-off for every driven. write cycle (SFPD = low) Chip select and cascadable serial 8-bit Interface Independent thermal shutdown of outputs for outputs control and diagnostic data transfer. (SOA Protection) Table 1. Device summary Order code Package Packing L9823 SO24 Tube E-L9823 SO24 Tube September 2013 DocID7791 Rev 7 1/19 This is information on a product in full production. www.st.comContents L9823 Contents 1 Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 Power outputs characteristics for flyback current, outputs short circuit protection and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2 Output stages control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.3 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2/19 DocID7791 Rev 7