L9953 / L9953XP Block diagram and pin description
Doc ID 14278 Rev 4 7/38
6, 7, 14, 15,
23, 25, 28, 32
VS
Power supply voltage (external reverse protection required)
For this input a ceramic capacitor as close as possible to GND is
recommended.
Important: for the capability of driving the full current at the outputs all
pins of VS must be externally connected.
8DI
Serial data input
The input requires CMOS logic levels and receives serial data from the
microcontroller. The data is an 24bit control word and the least
significant bit (LSB, bit 0) is transferred first.
9
CM/PWM2
Current monitor output/PWM2 input
Depending on the selected multiplexer bits of Input Data Register this
output sources an image of the instant current through the
corresponding highside driver with a ratio of 1/10.000. This pin is
bidirectional. The microcontroller can overdrive the current monitor
signal to provide a second PWM input for the output OUT7.
10 CSN
Chip select not input / test mode
This input is low active and requires CMOS logic levels. The serial data
transfer between L9953 and micro controller is enabled by pulling the
input CSN to low level. If an input voltage of more than 7.5V is applied
to CSN pin the L9953 will be switched into a test mode.
11 DO
Serial data output
The diagnosis data is available via the SPI and this tristate-output. The
output will remain in tristate, if the chip is not selected by the input CSN
(CSN = high)
12 VCC
Logic supply voltage
For this input a ceramic capacitor as close as possible to GND is
recommended.
13 CLK
Serial clock input
This input controls the internal shift register of the SPI and requires
CMOS logic levels.
16,17, 20,21,
OUT4
OUT5
Half-bridge-output 4,5: see OUT1 (pin 3).
Important: for the capability of driving the full current at the outputs both
pins of OUT4 (OUT5, respectively) must be externally connected.
26 CP
Charge pump output
This output is provided to drive the gate of an external n-channel power
MOS used for reverse polarity protection
27 PWM1
PWM1 input:
This input signal can be used to control the drivers OUT1-OUT6 and
OUT8 by an external PWM signal.
Table 2. Pin definitions and functions (continued)
Pin Symbol Function
Block diagram and pin description L9953 / L9953XP
8/38 Doc ID 14278 Rev 4
Figure 2. Configuration diagram (top view)
31
33
OUT6,
OUT7
Highside driver output 6,7:
Each output is built by a highside switch and is intended for resistive
loads, hence the internal reverse diode from GND to the output is
missing. For ESD reason a diode to GND is present but the energy
which can be dissipated is limited. Each highside driver is a power
DMOS transistor with an internal parasitic reverse diode from each
output to VS (bulk-drain-diode). Each output is over-current and open
load protected.
22, 24, 29,
30, 34
NC Not connected pins.
Table 2. Pin definitions and functions (continued)
Pin Symbol Function
OUT4
NC
GND
1
OUT8
2
OUT1
3
4
5
I
6
CM
/
PWM2
7
8
D
O
9
Vcc
10
11
Vs
12
V
s
O
UT4
14
Vs
15
Vs
16
17
18
GND36
O
UT6
35
NC34
O
UT8
33
32
PWM1
31
NC
30
29
CP
28
Vs
27
NC
26
Vs
25
NC
24
O
UT5
23
O
UT5
22
GND
21
Vs
20
O
UT7
19
Vs
OUT3
OUT2
CSN
GND
1
3
CLK
PowerSO-36
PowerSSO-36
L9953 / L9953XP Electrical specifications
Doc ID 14278 Rev 4 9/38
2 Electrical specifications
2.1 Absolute maximum ratings
Stressing the device above the rating listed in the “Absolute maximum ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality document
2.2 ESD protection
2.3 Thermal data
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
S
DC supply voltage -0.3 to28 V
Single pulse t
max
< 400ms 40 V
V
CC
Stabilized supply voltage, logic supply -0.3 to 5.5 V
V
DI
, V
DO,
V
CLK
,
V
CSN,
V
pwm1
Digital input / output voltage -0.3 to V
CC
+ 0.3 V
V
CM
Current monitor output -0.3 to V
CC
+ 0.3 V
V
CP
Charge pump output -25 to V
S
+ 11 V
I
OUT1,2,3,6,7
Output current ±5 A
I
OUT4,5,8
Output current ±10 A
Table 4. ESD protection
Parameter Value Unit
All pins ± 2
(1)
1. HBM according to MIL 883C, Method 3015.7 or EIA/JESD22-A114-A.
kV
Output pins: OUT1 - OUT8 ± 8
(2)
2. HBM with all unzapped pins grounded.
kV
Table 5. Operating junction temperature
Symbol Parameter Value Unit
T
j
Operating junction temperature -40 to 150 °C

L9953XPTR

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Motor / Motion / Ignition Controllers & Drivers Door actuator DRVR
Lifecycle:
New from this manufacturer.
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