L9177

L9177 Peripheral on chip for low end engine control Datasheet - production data – Serial driving – Output internally clamped to 45 V – Minimum guaranteed output current 1 A (2 A during in-rush) – Ron 1.5 Ω worst case (at Tj = 150 °C) '!0'03 PowerSO46 Features  Supply voltage from 6 V to 18 V – Basic functionality guaranteed down to 3.9 V  5 V regulator up to 300 mA with thermal shutdown protection in current limitation condition  5 V tracking regulator up to 40 mA and short to battery protection  5 V standby regulator up to 2.5 mA  O2 sensor heater – Parallel and serial driving – Output internally clamped to 45 V – Minimum guaranteed output current 3 A – Ron 0.5 Ω worst case (at Tj = 150 °C)  Protected high side driver – 100 mA min. current limitation threshold  2 channels injectors drivers – Parallel and serial driving – Output internally clamped to 60 V – Minimum overcurrent at 2.8 A – Ron 0.6 Ω worst case (at Tj = 150 °C)  Full diagnosis by SPI – Injector driver: OL, STG, OC – Relay and Lamp drivers: OL, STG, OC – O2 sensor heater: OL, STG, OC – Tachometer: OL, STG, OC – Stepper motor driver: OL, STG, STB, OC – general diagnostic: over-temperature  3 relay drivers – 2 with parallel and serial driving, 1 with serial driving – Output internally clamped to 45 V – Minimum guaranteed output current 1 A – Ron 1.5 Ω worst case (at Tj = 150 °C)  Protection for STB, STG (for stepper motor drivers and tracking regulator)  Tachometer driver – Parallel and serial driving – Minimum guaranteed output current 25 mA – Ron 5 Ω worst case (at Tj = 150 °C)  Lamp driver  Stepper motor driver – Parallel driving – Minimum guaranteed output current 500 mA - full step – Ron 2.6 Ω worst case on the diagonal (at Tj = 150 °C)  Self configuring variable reluctance sensor interface  K-line transceiver  Microcontroller reset logic  Packaged in PowerSO46 Table 1. Device summary Order code L9177 L9177TR November 2013 This is information on a product in full production. Package PowerSO46 DocID17617 Rev 1 Packing Tube Tape and reel 1/49 www.st.com Contents L9177 Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 4 2/49 2.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1 Operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Latch-up test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.4 Temperature ranges and thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.5.1 Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.5.2 Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.5.3 Digital pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.5.4 Digital output pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.5.5 5 V voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.5.6 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.5.7 5 V tracking voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.5.8 Standby regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.5.9 High side switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.5.10 Injector driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.5.11 Relay drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.5.12 Lamp driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.5.13 Tachometer driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.5.14 Stepper motor driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.5.15 O2 sensor heater driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.5.16 Variable reluctance sensor interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.5.17 K-line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.5.18 SPI interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.1 Chip working conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.2 Chip bias current generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 DocID17617 Rev 1 L9177 Contents 4.3 Power up/down sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.4 SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.5 4.6 4.4.1 Data in (DIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.4.2 Data out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.5.1 Voltage regulators thermal warning and shutdown . . . . . . . . . . . . . . . . 33 4.5.2 Overvoltage shut down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.5.3 Undervoltage shut down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.5.4 Low side on/off diagnosis (INJ, RLY's, TACH, O2H) . . . . . . . . . . . . . . . 34 4.5.5 Lamp driver on/off diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.5.6 Stepper motor driver off diagnosis (EN signal high and output in high impedance state) 36 4.5.7 Stepper motor driver on diagnosis (EN signal Low and output driven by input commands) 36 4.5.8 VRS diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 VRS interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 4.6.1 Function characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 4.6.2 Auto-adaptative hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4.6.3 Auto-adaptative time filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5 Low side drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 6 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 6.1 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 7 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 DocID17617 Rev 1 3/49 3 List of tables L9177 List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Table 30. Table 31. Table 32. Table 33. Table 34. Table 35. Table 36. 4/49 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ESD protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Temperature ranges and thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Supply electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Key electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Digital pins characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Digital output pins characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 VDD output electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Reset function electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 VDD_TRK output electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 VDD_SB output electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 HS_OUT output electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Injector driver electrical characteristic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Relay driver characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Lamp driver characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Tachometer driver electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Stepper motor driver electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 O2 sensor heater driver characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Variable reluctance sensor interface electrical characteristics . . . . . . . . . . . . . . . . . . . . . . 24 K-Line interface electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 SPI characteristics and timings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 L9177 outputs working conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Data in (DIN) words content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Data in command bits structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Data in VRS hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Data out (DOUT) words content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Two bits diagnosis (normal drivers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Three bits diagnosis (bridge stage). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Peak voltage detector precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Hysteresis threshold precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Values for IPx and INx current generators for each low side . . . . . . . . . . . . . . . . . . . . . . . 44 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 DocID17617 Rev 1 L9177 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Input threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Key block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 V main regulator block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5 V tracking regulator block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 V standby regulator block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 High-side driver block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Low-side driver block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Low-side timing diagram (injectors, relays, lamp, tach, O2H). . . . . . . . . . . . . . . . . . . . . . . 19 Stepper motor driver block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Stepper motor operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 VRS block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 K-line block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 -SO loading for disable time measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 SPI timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Current generator block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Power-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Power-down sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 L9177 under and over voltage time diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Low side driver diagnosis time diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Low side driver diagnosis I-V relationship. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Lamp driver diagnosis time diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Stepper motor driver diagnosis time diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Stepper motor driver diagnosis I-V relationship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 VRS diagnosis I-V relationship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 VRS typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 VRS interface structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Auto-adaptive hysteresis block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Hysteresis output voltage level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Input-output behavior of VRS interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Auto-adaptative time filter behaviour 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Auto-adaptative time filter behaviour 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Low side drivers slew rate implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Low side drivers slew rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 O2H low side driver slew rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 PowerSO46 mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . 47 DocID17617 Rev 1 5/49 5 Description 1 L9177 Description L9177 is a device realized in ST BCD proprietary technology, able to provide the full set of power supplies and signal preprocessing peripherals needed to control a 2 Cylinder internal combustion Engine for Low End Application (e.g. small motorcycle, K-car, nautical engines, etc.). L9177 integrates a 5 V main voltage regulator, a 5 V 40 mA tracking regulator for sensor supply and a 2.5 mA 5 V standby regulator. The two channels injector drivers, the O2 sensor heater and two relay drivers can be controlled both with parallel input and with SPI interface. One additional relay driver and the lamp driver are controlled by SPI. The stepper motor driver is designed for a double winding coil motor, used for engine idle speed control. Low side drivers implement SR control to minimize emission. A protected 50 mA high side driver is provided. A Variable Reluctance Sensor interface allows the connection to a commercial magnetic pick-up, allowing the indirect measurement of internal combustion engine crank angle. A Kline (standard ISO-9141 compatible) is provided as data communication interface. All functionalities are fully protected and provide complete diagnostics via a 24bit SPI interface. An overall protection against over temperature is provided as well. The device is available in PowerSO46, ST proprietary package for high power application. 6/49 DocID17617 Rev 1 L9177 Block diagram and pin description 2 Block diagram and pin description 2.1 Block diagram Figure 1. Block diagram 6$$ 6$$?42+ 6$$?3" (3?/54 6"? 6REGULATORM! 6TRACKING6REG M! 6ST BY6REGM! 3TANDBYMODE /PERATINGMODE +%9 2%3%4 2%3%4 ). (3SWITCHM! ).*%#4/2$2)6%2#(!..%, $IAGNOSIS /PEN,OAD /VER CURRENT 3HORTTO'.$ ). /VER CURRENT! 6#LAMP 2/.OHM 62). 62). 62/54 6ARIABLE 2ELUCTANCE 3ENSOR )NTERFACE 07- ).* '.$?).* '.$?).* 34%00%2-/4/2$2)6%2 $IAGNOSIS /PEN,OAD /VER CURRENT 3HORTTO'.$6" 6" $)2 ).* /VER CURRENT! 2/.OHM /54! /54" /54# /54$ %. #URRENT 2EFERENCE 'ENERATOR 2%84 ),3?4!#( 4!#(/-%4%2$2)6%2 $IAGNOSIS /PEN,OAD /VER CURRENT 3HORTTO'.$ /VER CURRENT! 2/.OHM /3%.3/2(%!4%2 )./( $IAGNOSIS /PEN,OAD /VER CURRENT 3HORTTO'.$ 3) #3 /( '.$/( 30) 3/ /VER CURRENT! 6#LAMP 2/.OHM 4!#( 3#+ 2%,!9$2)6%2#(!..%,3 $IAGNOSIS /PEN,OAD /VER CURRENT 3HORTTO'.$ ).?2%, ).?2%, /VER CURRENT! 6#LAMP 2/.OHM 2%, 2%, 2%, '.$?0? ,!-0$2)6%2 +,?48 + ,).% +,?28 +,?,).% $IAGNOSIS /PEN,OAD /VER CURRENT 3HORTTO'.$ /VER CURRENT! !IN RUSH 6#LAMP 2/.OHM '.$?!'.$?0 DocID17617 Rev 1 ,!-0 '.$?0? '!0'03 7/49 48 Block diagram and pin description 2.2 L9177 Pin description Figure 2. Pin connection (top view) '.$ /54" /54! 6"? %. $)2 6$$?42+ 2%84 (3?/54 62). 62). 62/54 /( 4!#( ),3?4!#( '.$?/( )./( 2%3%4 ). 2%, ). 2%, 2%, '.$?0? 2%,                                               /54# /54$ 6" 6$$?3" 076$$ +,?,INE +,?28 +,?48 ).* ). '.$?).* '.$?).* ). ).* +%9 #3 3#+ 3) 3/ ,!-0 '.$?0? 2%, '!0'03 Table 2. Pin function 8/49 I/O type Class GND PWR Output bridge 1 O PWR OUTA Output bridge 1 O PWR 4 VB_1 Battery line to bridge1 I PWR 5 EN Logic input to enable stepper motor I SIGNAL 6 DIR Logic input to set stepper motor direction I SIGNAL 7 VDD_TRK Tracking voltage regulator output O PWR 8 REXT External resistor for precision current reference I SIGNAL 9 HS_OUT High side switch output O PWR 10 VRIN+ VRS positive differential input I SIGNAL 11 VRIN- VRS negative differential input I SIGNAL 12 VROUT VRS output O SIGNAL 13 O2H O2 sensor heater output O PWR Pin # Pin name Description 1 GND Analog and power ground 2 OUTB 3 DocID17617 Rev 1 L9177 Block diagram and pin description Table 2. Pin function (continued) I/O type Class Tachometer driver output O PWR ILS_TACH Tachometer driver input I SIGNAL 16 GND_O2H O2 sensor heater ground GND PWR 17 INO2H O2 sensor heater input I SIGNAL 18 RESET Reset signal to the micro O SIGNAL 19 IN_REL2 Relay 2 parallel control input I SIGNAL 20 IN_REL1 Relay 1 parallel control input I SIGNAL 21 REL2 Relay 2 driver output O PWR 22 GND_P_1 Power ground relay 1-2 O PWR 23 REL1 Relay 1 driver output O PWR 24 REL3 Relay 3 driver output O SIGNAL 25 GND_P_2 GND PWR 26 LAMP Lamp driver output O PWR 27 SO SPI data out O SIGNAL 28 SI SPI data in I SIGNAL 29 SCK SPI serial clock I SIGNAL 30 CS SPI chip select I SIGNAL 31 KEY Key signal I SIGNAL 32 INJ1 Injector 1driver power output O PWR 33 IN1 Injector 1 driver input command I SIGNAL 34 GND_INJ1 Injector 1 ground GND PWR 35 GND_INJ2 Injector 2 ground GND PWR 36 IN2 Injector 2 driver input command I SIGNAL 37 INJ2 Injector 2 driver power output O PWR 38 KL_TX K-Line TX digital IN I SIGNAL 39 KL_RX K-Line RX digital OUT O SIGNAL 40 KL_LINE K-Line I/O PWR 41 VDD 5 V voltage regulator output O PWR 42 PWM Logic Input to set Stepper Motor Speed I SIGNAL 43 VDD_SB 5 V standby voltage regulator output O PWR 44 VB Battery line to bridge 2 I PWR 45 OUTD Output bridge 2 O PWR 46 OUTC Output bridge 2 O PWR Pin # Pin name 14 TACH 15 Description Power ground for lamp DocID17617 Rev 1 9/49 48 Electrical specifications L9177 3 Electrical specifications 3.1 Operating range The device may not operate properly if maximum operating conditions are exceeded. Table 3. Operating conditions Symbol VB Parameter Value Unit Supply voltage 6 to 18(1) V I/O logic 0 to Vdd V -0.3 to Vb+ V -0.3 to clamp voltage V Stepper motor outputs Low side 1. Below 3.9 V the device is in a safety state (internal circuitries are on but all the outputs are off). From 3.9 V to 5.5 V (cranck functionality) Reset function; VDD > 3.3 V (rds-on state) IVDD=100mA; 3.3 V