L9951_10 Datasheet, PDF (1/36 Pages) STMicroelectronics – Rear door actuator driver

L9951
L9951XP
Rear door actuator driver
Features
Type Outputs⁽¹⁾
L9951
L9951XP
OUT1
OUT2
OUT3
OUT4
OUT5
1. See block diagram.
2. Typical values.
R_on(2)
150 mΩ
200 mΩ
200 mΩ
800 mΩ
800 mΩ
I_OUT
7.4 A
5A
5A
1.25 A
1.25 A
V_S
28 V
■ One half bridge for 7.4 A load (R_on = 150 mΩ)
■ Two half bridges for 5 A load (R_on = 200 mΩ)
■ Two highside drivers for 1.25 A load
(R_on = 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
(I_S < 3µA, typ. T_j ≤ 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
PowerSO-36
PowerSSO-36
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.
Table 1. Device summary
Package
PowerSO-36
PowerSSO-36
Tube
L9951
L9951XP
Order codes
Tape and reel
L9951TR
L9951XPTR
May 2010
Doc ID 14173 Rev 8
1/36
www.st.com
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