L9953 STMicroelectronics, L9953 Datasheet - Page 7

• Manufacturer Part Number: L9953
• Description: IC DVR DOOR ACTUATOR POWERSO-36
• Manufacturer: STMicroelectronics

Specifications of L9953

• Applications: Door Actuator
• Current - Supply: 7mA
• Voltage - Supply: 7 V ~ 28 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: PowerSO-36 Exposed Bottom Pad
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L9953 / L9953XP
Table 2.
23, 25, 28, 32
16,17, 20,21,
6, 7, 14, 15,
Pin
10
11
12
13
26
27
8
9
Pin definitions and functions (continued)
CM/PWM2
Symbol
PWM1
OUT4
OUT5
CSN
VCC
CLK
DO
CP
VS
DI
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.
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.
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.
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.
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)
Logic supply voltage
For this input a ceramic capacitor as close as possible to GND is
recommended.
Serial clock input
This input controls the internal shift register of the SPI and requires
CMOS logic levels.
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.
Charge pump output
This output is provided to drive the gate of an external n-channel power
MOS used for reverse polarity protection
PWM1 input:
This input signal can be used to control the drivers OUT1-OUT6 and
OUT8 by an external PWM signal.
Doc ID 14278 Rev 3
Block diagram and pin description
Function
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