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L9951
April 2004
This is preliminary information on a new product now in development. Details are subject to change without notice.
1
FEATURES
One half bridge for 7.4A load (r
on
= 150m
)
Two half bridges for 5A load (r
on
= 200m
)
Two highside drivers for 1.25A load (r
on
= 800 m
)
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
< 3A, 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
2
APPLICATION
Rear Door Actuator Driver with bridges for door
lock and safe lock and two 5W or 10W-light
bulbs.
3
DESCRIPTION
The L9951 is a microcontroller driven multifunc-
tional rear door actuator driver for automotive ap-
plications. Up to two DC motors and two grounded
resistive loads can be driven with three half bridg-
es and two highside drivers. The integrated stan-
dard serial peripheral interface (SPI) controls all
operation modes (forward, reverse, brake and
high impedance). All diagnostic informations are
available via SPI.
PowerSO36
DATA BRIEF
DOOR ACTUATOR DRIVER
BLOCK DIAGRAM
DI
CM/PWM
DO
CLK
CSN
C
VCC
SPI
Dr
i
v
e
r
I
n
t
e
r
f
a
c
e &
Di
ag
no
s
t
i
c
GND
CP
MU
X
Exteriour Light
Safety Light
OUT1
OUT2
OUT3
OUT4
OUT5
M
M
Lock
Safe Lock
VBAT
100k
Reverse
Polarity
Protection
EN
VS
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)
PWM
10k
Table 1. Order Codes
Part Number
Package
L9951
PowerSO36
REV. 2
L9951
2/4
OUTLINE AND
MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
3.25
3.5
0.128
0.138
A2
3.3
0.13
A4
0.8
1
0.031
0.039
A5
0.2
0.008
a1
0
0.075
0
0.003
b
0.22
0.38
0.008
0.015
c
0.23
0.32
0.009
0.012
D
15.8
16
0.622
0.630
D1
9.4
9.8
0.37
0.38
D2
1
0.039
E
13.9
14.5
0.547
0.57
E1
10.9
11.1
0.429
0.437
E2
2.9
0.114
E3
5.8
6.2
0.228
0.244
E4
2.9
3.2
0.114
1.259
e
0.65
0.026
e3
11.05
0.435
G
0
0.075
0
0.003
H
15.5
15.9
0.61
0.625
h
1.1
0.043
L
0.8
1.1
0.031
0.043
N
10 (max)
s
8 (max)
Note: "D and E1" do not include mold flash or protusions.
- Mold flash or protusions shall not exceed 0.15mm (0.006")
- Critical dimensions are "a3", "E" and "G".
PowerSO36
e
a2
A
E
a1
PSO36MEC
DETAIL A
D
1
1
8
19
36
E1
E2
h x 45
DETAIL A
lead
slug
a3
S
Gage Plane
0.35
L
DETAIL B
DETAIL B
(COPLANARITY)
G
C
- C -
SEATING PLANE
e3
c
N
N
M
0.12
A B
b
B
A
H
E3
D1
BOTTOM VIEW
0096119 B
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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L9951
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