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L9950TR Datasheet(PDF) 1 Page - STMicroelectronics |
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L9950TR Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 23 page  1/23 L9950 July 2004 1FEATURES ■ One full bridge for 6A load (ron = 150mΩ ) ■ Two half bridges for 3A load (ron = 300mΩ ) ■ Two half bridges for 1.5A load (ron = 800mΩ ) ■ One highside driver for 6A load (ron = 100mΩ ) ■ Four highside drivers for 1.5A load (ron = 800 mΩ ) ■ Programmable Softstart function to drive loads with higher inrush currents (i.e. current >6A,>3A,>1.5A) ■ Very low current consumption in standby mode IS < 6µA, typ. Tj ≤ 85 °C) ■ All outputs short circuit protected ■ Current monitor output for 300m Ω ,150mΩ and 100m highside drivers ■ All outputs over temperature protected ■ Open load diagnostic for all outputs ■ Overload diagnostic for all outputs ■ Seperated half bridges for door lock motor ■ PWM control of all outputs ■ Charge Pump output for reverse polarity protection 2 APPLICATIONS Door Actuator Driver with bridges for door lock and safe lock, mirror axis control, mirror fold and highside driver for mirror defroster and four 5W-light bulbs. 3DESCRIPTION The L9950 is a microcontroller driven multifunc- tional door actuator driver for automotive applica- tions.Up to five DC motors and five grounded resistive loads can be driven with six half bridges and five highside drivers. The integrated standard serial peripheral interface (SPI) controls all opera- tion modes (forward, reverse, brake and high im- pedance). All diagnostic informations are available via SPI. DOOR ACTUATOR DRIVER Figure 2. Block Diagram DI CM/PWM2 DO CLK CSN VCC VBAT PWM1 GND M M CP VS Exteriour Light Turn Indicator Safety Light Footstep Light Defroster Lock Safe Lock xy-Mirror Motors OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 OUT9 OUT10 OUT11 M M M M M M Reverse Polarity Protection PWM2 M M Mirror Fold Note: value of capacitor has to be choosen carefully to limit the VS voltage below absolute maximum ratings in case of an unexpected freewheeling condition (e.g. TSD, POR) 1k 1k 1k 1k 1k 1k Note: resistors between µµC and L9950 are recommended to limit currents for negative voltage transients at VBAT (e.g. ISO type 1 pulse). 10k REV. 3 Figure 1. Package Table 1. Order Codes Part Number Package L9950 PowerSO36 L9950TR Tape & Reel PowerSO36 |
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