September 2013 Doc ID 14173 Rev 9 1/36
1
L9951
L9951XP
Rear door actuator driver
Features
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
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.
R
on
(2)
2. Typical values.
I
OUT
V
S
L9951
L9951XP
OUT1
OUT2
OUT3
OUT4
OUT5
150 mΩ
200 mΩ
200 mΩ
800 mΩ
800 mΩ
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
Contents L9951 / L9951XP
2/36 Doc ID 14173 Rev 9
Contents
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 ESD protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Temperature warning and thermal shutdown . . . . . . . . . . . . . . . . . . . . . . 10
2.5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6 SPI - electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Dual power supply: VS and VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Standby - mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Inductive loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.4 Diagnostic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.5 Over-voltage and under-voltage detection . . . . . . . . . . . . . . . . . . . . . . . . 20
3.6 Temperature warning and thermal shutdown . . . . . . . . . . . . . . . . . . . . . . 20
3.7 Open-load detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.8 Over load detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.9 Current monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.10 PWM input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.11 Cross-current protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.12 Programmable softstart function to drive loads with higher inrush current 21
4 Functional description of the SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1 Serial Peripheral Interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 Chip Select Not (CSN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3 Serial Data In (DI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4 Serial Data Out (DO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.5 Serial clock (CLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.6 Input data register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.7 Status register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
L9951 / L9951XP Contents
Doc ID 14173 Rev 9 3/36
4.8 Test mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 Packages thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1 ECOPACK
®
packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2 PowerSO-36™ package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.3 PowerSSO-36™ package information . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.4 PowerSO-36™ packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.5 PowerSSO-36™ packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

L9951XP

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Motor / Motion / Ignition Controllers & Drivers DOOR ACTUATOR DRIVER
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet