L9951 STMicroelectronics

L9951 L9951XP Rear door actuator driver Features (1) (2) Type Outputs R I V on OUT S OUT1 150 m 7.4 A OUT2 200 m 5A L9951 OUT3 200 m 5A 28 V L9951XP OUT4 800 m 1.25 A PowerSSO-36 PowerSO-36 OUT5 800 m 1.25 A 1. See block diagram. 2. Typical values. Applications One half bridge for 7.4 A load (R = 150 m) on Rear door actuator driver with bridges for door Two half bridges for 5 A load (R = 200 m) lock and safe lock and two 5W or 10W - light on bulbs. Two highside drivers for 1.25 A load (R = 800 m) on Description Programmable softstart function to drive loads with higher inrush currents (i.e.current > 7.4A, The L9951 and L9951XP are microcontroller >5A, >1.25A) driven, multifunctional rear door actuator drivers Very low current consumption in standby mode for automotive applications. Up to two DC motors (I < 3A, typ. T 85C) and two grounded resistive loads can be driven S j with three half bridges and two hide side drivers. All outputs short circuit protected The integrated standard serial peripheral interface Current monitor output for all highside drivers (SPI) controls all operation modes (forward, All outputs over temperature protected reverse, brake and high impedance). All diagnostic information is available via the SPI. Open-load diagnostic for all outputs Overload diagnostic for all outputs Programmable PWM control of all outputs Charge pump output for reverse polarity protection Table 1. Device summary Order codes Package Tube Tape and reel PowerSO-36 L9951 L9951TR PowerSSO-36 L9951XP L9951XPTR September 2013 Doc ID 14173 Rev 9 1/36 www.st.com 1 Contents L9951 / L9951XP Contents 1 Block diagram and pin description . 6 2 Electrical specifications 9 2.1 Absolute maximum ratings . 9 2.2 ESD protection 9 2.3 Thermal data . 9 2.4 Temperature warning and thermal shutdown 10 2.5 Electrical characteristics 10 2.6 SPI - electrical characteristics . 14 3 Application information . 19 3.1 Dual power supply: VS and VCC . 19 3.2 Standby - mode 19 3.3 Inductive loads . 19 3.4 Diagnostic functions . 19 3.5 Over-voltage and under-voltage detection 20 3.6 Temperature warning and thermal shutdown 20 3.7 Open-load detection . 20 3.8 Over load detection . 20 3.9 Current monitor 20 3.10 PWM input 21 3.11 Cross-current protection 21 3.12 Programmable softstart function to drive loads with higher inrush current 21 4 Functional description of the SPI . 22 4.1 Serial Peripheral Interface (SPI) 22 4.2 Chip Select Not (CSN) . 22 4.3 Serial Data In (DI) . 22 4.4 Serial Data Out (DO) 23 4.5 Serial clock (CLK) . 23 4.6 Input data register 23 4.7 Status register . 23 2/36 Doc ID 14173 Rev 9