L9826 Datasheet, PDF (1/12 Pages) STMicroelectronics – Octal Low-Side Driver for resistive and inductive loads with serial/parallel input control, output protection and diagnostic

L9826
Octal Low-Side Driver for resistive and inductive loads with
serial/parallel input control, output protection and diagnostic
s OUTPUTS CURRENT CAPABILITY UP TO
500mA, R_ON = 2.2Ω AT T_J = 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 V_CC
s - INTRINSIC OUTPUT VOLTAGE CLAMPING
AT TYP. 50V
s OVERCURRENT SHUTDOWN AT OUTPUTS
3 TO 8
s SHORT CIRCUIT CURRENT LIMITATION
AND SELECTIVE THERMAL SHUTDOWN AT
OUTPUTS 1 AND 2
s OUTPUT STATUS DATA AVAILABLE ON THE SPI
SO20 (16+2+2)
ORDERING NUMBER: L9826
DESCRIPTION
The L9826 is a Octal Low-Side Driver Circuit, dedicated
for automotive applications. Output voltage clamping is
provided for flyback current recirculation, when induc-
tive loads are driven. Chip Select and Serial Peripheral
Interface for outputs control and diagnostic data trans-
fer. Parallel Control inputs for two outputs.
BLOCK DIAGRAM
VCC
NON1
NON2
NCS
CLK
SDI
SDO
nRES
VCC
Q1
Diag1
13
2
S _{Latch / Driver}
Fault Latch
R
Overtemperature Detection
VCC
Q2
Diag2
IOL
+
-
VDG
CH1
CH2
VCC
VCC
VCC
VCC
Q1
Q2
Q3
Q3
Q4
Q5
Q6
Q7
Q8
Diag1 Diag3
Diag2
Diag3
Diag4 _Q4
Diag5 _Diag4
Diag6
Diag7
Diag8 ^Q5
Diag5
Q6
Diag6
Reset
VCC
Undervoltage
RESET
Reset Q7
Diag7
Q8
Diag8
S
Latch / Driver
R
IOL
+
- VDG _CH3
CH4
CH5
CH6
CH7
CH8
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
GND
October 2002
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