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L9951TR Datasheet(PDF) 1 Page - STMicroelectronics |
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L9951TR Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 36 page  May 2010 Doc ID 14173 Rev 8 1/36 1 L9951 L9951XP Rear door actuator driver Features ■ One half bridge for 7.4 A load (Ron = 150 mΩ) ■ Two half bridges for 5 A load (Ron = 200 mΩ) ■ Two highside drivers for 1.25 A load (Ron =800 mΩ) ■ Programmable softstart function to drive loads with higher inrush currents (i.e.current > 7.4A, >5A, >1.25A) ■ Very low current consumption in standby mode (IS < 3µA, typ. Tj ≤ 85°C) ■ All outputs short circuit protected ■ Current monitor output for all highside drivers ■ All outputs over temperature protected ■ Open-load diagnostic for all outputs ■ Overload diagnostic for all outputs ■ Programmable PWM control of all outputs ■ Charge pump output for reverse polarity protection Applications ■ Rear door actuator driver with bridges for door lock and safe lock and two 5W or 10W - light bulbs. Description The L9951 and L9951XP are microcontroller driven, multifunctional rear door actuator drivers for automotive applications. Up to two DC motors and two grounded resistive loads can be driven with three half bridges and two hide side drivers. The integrated standard serial peripheral interface (SPI) controls all operation modes (forward, reverse, brake and high impedance). All diagnostic information is available via the SPI. Type Outputs(1) 1. See block diagram. Ron(2) 2. Typical values. IOUT VS L9951 L9951XP OUT1 OUT2 OUT3 OUT4 OUT5 150 m Ω 200 m Ω 200 m Ω 800 m Ω 800 m Ω 7.4 A 5A 5A 1.25 A 1.25 A 28 V PowerSO-36 PowerSSO-36 Table 1. Device summary Package Order codes Tube Tape and reel PowerSO-36 L9951 L9951TR PowerSSO-36 L9951XP L9951XPTR www.st.com |
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