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L9825 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. L9825
Description  Octal Low-side Driver For Resistive and Inductive Loads With Serial / Parallel Input Control, Output Protection and Diagnostic
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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L9825 Datasheet(HTML) 1 Page - STMicroelectronics

 
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L9825
July 2001
This is preliminary information on a new product now in development. Details are subject to change without notice.
s
OUTPUTS CURRENT CAPABILITY UP TO
1A, RON ≤ 0,75Ω AT TJ = 25°C
s
PARALLEL CONTROL INPUTS FOR
OUTPUTS 1 AND 2
s
SPI CONTROL FOR OUTPUTS 1 TO 8
s
RESET FUNCTION WITH RESET SIGNAL AT
NRES PIN OR UNDERVOLTAGE AT VCC
s
INTRINSIC OUTPUT VOLTAGE CLAMPING
AT TYP. 50V
s
OVERCURRENT SHUTDOWN AT OUTPUTS
1 TO 6
s
SHORT CIRCUIT CURRENT LIMITATION
AND SELECTIVE THERMAL SHUTDOWN AT
OUTPUTS 7 AND 8
s
OUTPUT STATUS DATA AVAILABLE ON THE
SPI
DESCRIPTION
L9825 is a Octal Low-Side Driver Circuit, dedicated
for automotive applications. Output voltage clamping
is provided for flyback current recirculation, when in-
ductive loads are driven. Chip Select and Serial Pe-
ripheral Interface for outputs control and diagnostic
data transfer. Parallel Control inputs for two outputs.
PowerSO20
ORDERING NUMBER: L9825
PRODUCT PREVIEW
Octal Low-side Driver For Resistive and Inductive Loads With
Serial / Parallel Input Control, Output Protection and Diagnostic
BLOCK DIAGRAM
NCS
SDI
CLK
SDO
NON1
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
GND
Diag1
Diag8
nRES
Q1
CH1
Diag1
+
-
CH7
Diag7
Q7
Q1
Q8
CH3
Diag3
Q3
+
-
CH4
CH5
CH6
CH2
NON2
Diag2
Diag4
Q4
Diag5
Q5
Diag6
Q6
Q8
CH8
Diag8
Fault Latch
Q2
Reset
R
S
Latch / Driver
Reset
Undervoltage
RESET
+
-
Current Control
Overtemperature Detection
3
1
2
S
R
Latch / Driver
S
R
Latch / Driver
Q2
Q3
Q4
Q5
Q6
Q7
Diag2
Diag3
Diag4
Diag5
Diag6
Diag7
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VDG
IOL
IOL
VDG
IOL
VDG


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