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| L9825TR Datasheet, PDF (1/11 Pages) STMicroelectronics – Octal Low-side Driver For Resistive and Inductive Loads With Serial / Parallel Input Control, Output Protection and Diagnostic | |||
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L9825
Octal Low-side Driver For Resistive and Inductive Loads With
Serial / Parallel Input Control, Output Protection and Diagnostic
s OUTPUTS CURRENT CAPABILITY UP TO
1A, RON ⤠0,75⦠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
PowerSO20
ORDERING NUMBER: L9825
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.
BLOCK DIAGRAM
VCC
NON1
V CC
1
3
2
Q1
S Latch / Driver
R
OUT1
IOL
NON2
NCS
Diag1
V CC
Q2
Diag2
V CC
CLK
V CC
SDI
SDO
V CC
Fault Latch
Q1
Q2
Q3
Q3
Q4
Q5
Q6
Q7
Q8
Diag1
Diag2
Diag3
Diag4
Diag5
Diag6
Diag7
Diag8
Diag3
Q4
Diag4
Q5
Diag5
Q6
Diag6
S
Latch / Driver
R
nRES
V CC
Q7
Reset
V CC
Undervoltage
RESET
Reset
GND
Diag7
Q8
Diag8
S Latch / Driver
Current Control
R
Overtemperature Detection
+
-
VDG
CH1
CH2
IOL
OUT2
OUT3
+
- VDG CH3
CH4
CH5
CH6
IOL
OUT4
OUT5
OUT6
OUT7
+
- VDG CH7
CH8
OUT8
April 2003
1/11
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