L9950_09 Datasheet, PDF (1/39 Pages) STMicroelectronics – Door actuator driver

L9950
L9950XP
Door actuator driver
Features
■ One full bridge for 6A load (R_on=150 mΩ )
■ Two half bridges for 3A load (R_on=300 mΩ )
■ Two half bridges for 1.5A load (R_on=800 mΩ )
■ One highside driver for 6A load (R_on=100 mΩ )
■ Four highside drivers for 1.5 A load
(R_on=800 mΩ )
■ Programmable softstart function to drive loads
with higher inrush currents (i.e. current
>6 A,>3 A,>1.5 A)
■ Very low current consumption in standby mode
(I_S < 6 μA typ; I_CC <25 μA typ; T_j ≤ 85 °C)
■ All outputs short circuit protected
■ Current monitor output for 300 mΩ, 150 mΩ
and 100 m 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
PowerSO-36
PowerSSO-36
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
10W-light bulbs.
Description
The L9950 and L9950XP are microcontroller
driven multifunctional door actuator driver for
automotive applications.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 operation modes (forward,
reverse, brake and high impedance). All
diagnostic informations are available via SPI.
Table 1. Device summary
Package
PowerSO-36
PowerSSO-36
June 2009
Order codes
Part number (tube)
Part number (tape and reel)
L9950
L9950XP
L9950TR
L9950XPTR
Doc ID 10311 Rev 10
1/39
www.st.com
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