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 worst case (at T = 150 C) j PowerSO46 Stepper motor driver Parallel driving Features Minimum guaranteed output current 500 mA - full step Supply voltage from 6 V to 18 V Ron 2.6 worst case on the diagonal Basic functionality guaranteed down to 3.9 V (at T = 150 C) j 5 V regulator up to 300 mA with thermal O2 sensor heater shutdown protection in current limitation Parallel and serial driving condition Output internally clamped to 45 V 5 V tracking regulator up to 40 mA and short to Minimum guaranteed output current 3 A battery protection Ron 0.5 worst case (at T = 150 C) j 5 V standby regulator up to 2.5 mA Protected high side driver 2 channels injectors drivers 100 mA min. current limitation threshold Parallel and serial driving Full diagnosis by SPI Output internally clamped to 60 V Injector driver: OL, STG, OC Minimum overcurrent at 2.8 A Relay and Lamp drivers: OL, STG, OC Ron 0.6 worst case (at T = 150 C) j O2 sensor heater: OL, STG, OC 3 relay drivers Tachometer: OL, STG, OC 2 with parallel and serial driving, 1 with Stepper motor driver: OL, STG, STB, OC serial driving general diagnostic: over-temperature Output internally clamped to 45 V Protection for STB, STG (for stepper motor Minimum guaranteed output current 1 A drivers and tracking regulator) Ron 1.5 worst case (at T = 150 C) j Self configuring variable reluctance sensor Tachometer driver interface Parallel and serial driving K-line transceiver Minimum guaranteed output current 25 mA Microcontroller reset logic Ron 5 worst case (at T = 150 C) j Packaged in PowerSO46 Lamp driver Table 1. Device summary Order code Package Packing L9177 Tube PowerSO46 L9177TR Tape and reel November 2013 DocID17617 Rev 1 1/49 This is information on a product in full production. www.st.com 0 03 Contents L9177 Contents 1 Description . 6 2 Block diagram and pin description . 7 2.1 Block diagram . 7 2.2 Pin description 8 3 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 4 Functional description 28 4.1 Chip working conditions 28 4.2 Chip bias current generation 29 2/49 DocID17617 Rev 1