L9826 Octal protected low-side driver with diagnostic and serial/parallel input control Features 8 channels low side driver with 450 mA output current capability Typical R 1.5 at T = 25 C DSON J Parallel control for output 1 and 2 0 03 SPI control on all outputs SO20 Reset function Diagnostic through 8 bit SPI Intrinsic output voltage clamping 50 V (Typ) protection for inductive load drive The 8 -bit serial peripheral interface (SPI) is able Short circuit current limitation and thermal to control the device s eight channels and to shutdown for outputs 1 and 2 provide its load s diagnosis. In addition output 1 and 2 can also be controlled through dedicated Overcurrent and short circuit shutdown for input pins NON1 and NON2. outputs 3 to 8 Overcurrent and short-circuit protections are Description present as well as the output voltage clamping which is able to protect the L9826 during The L9826 is a protected octal low-side driver IC operation with inductive loads. designed for the automotive environment. Table 1. Device summary Order code Package Packing L9826 SO20 Tube L9826TR SO20 Tape and reel E-L9826 SO20 Tube E-L9826TR SO20 Tape and reel September 2013 Doc ID 7214 Rev 10 1/19 www.st.com 1Contents L9826 Contents 1 Block Diagram 5 2 Pins description 6 3 Electrical specifications 7 3.1 Absolute maximum ratings . 7 3.2 Thermal data . 7 3.3 Electrical characteristics . 8 4 Application information . 11 5 Functional description 12 5.1 General . 12 5.2 Output stage control . 12 5.2.1 Via parallel, only for output 1 and 2 12 5.2.2 Via 8-bit SPI for all the outputs . 13 5.3 Output stage diagnostics . 14 5.3.1 Diagnostic on Outputs 1 and 2 controlled via NON1/NON2 . 15 5.3.2 Diagnostic on Outputs 1 to 8 controlled via SPI 15 5.4 Protections 16 5.4.1 Flyback current . 16 5.4.2 Current regulation mode outputs 1 and 2 . 16 5.4.3 Short circuits outputs 3 to 8 16 6 Package information 17 7 Revision history . 18 2/19 Doc ID 7214 Rev 10