L9823 Datasheet, PDF (1/12 Pages) STMicroelectronics – Octal Low-Side Driver for bulb, resistive and inductive loads with serial input control, output protection and diagnostic

L9823
Octal Low-Side Driver for bulb, resistive and inductive loads with
serial input control, output protection and diagnostic
s OUTPUTS CURRENT CAPABILITY UP TO
0.5A
s CASCADABLE SPI CONTROL FOR
OUTPUTS
s RESET FUNCTION WITH RESET SIGNAL OR
UNDERVOLTAGE AT V_DD
s PROGRAMMABLE INTRINSIC OUTPUT
VOLTAGE CLAMPING AT TYP. 50V FOR
INDUCTIVE SWITCHING
s OVERCURRENT SHUTDOWN WITH LATCH-
OFF FOR EVERY WRITE CYCLE (SFPD = LOW)
s INDEPENDENT THERMAL SHUTDOWN OF
OUTPUTS (SOA PROTECTION)
s OUTPUT STATUS DATA AVAILABLE ON THE
SPI USING 8-BIT I/O PROTOCOL UP TO 3.0MHZ
s LOW STANDBY CURRENT WITH RESET =
LOW (TYP 35µA @ VDD)
s OPEN LOAD DETECTION (OUTPUTS OFF)
s SINGLE V_DD LOGIC SUPPLY
s HIGH EMS IMMUNITY AND LOW EME
(CONTROLLED OUTPUT SLOPES)
s FULL FUNCTIONALITY OF THE REMAINING
DEVICE AT NEGATIVE VOLTAGE DROP ON
SO24 (20+2+2)
ORDERING NUMBER: L9823
OUTPUTS (-1,5V OR -3,0A)
s OUTPUT MODE PROGRAMMABLE FOR
SUSTAINED CURRENT LIMIT OR
SHUTDOWN
DESCRIPTION
L9823 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 cascadable
Serial 8-bit Interface for outputs control and diagnos-
tic data transfer.
BLOCK DIAGRAM
SFPD
15
CSB
10
SCLK
3
SI
4
SO
9
Reset
22
16 ^VDD
OL0
Reset
Undervoltage
RESET
Q0
Q0
Q1
Q2 ISCB0
Q3
Q4
Q5 ^OT0
Q6
Q7 _Diag0
Diag0
Diag1
Diag2
Diag3
Diag4
Q1
Diag1
Q2
Diag2
Diag5 Q3
Diag6 Diag3
Diag7 _Q4
Diag4
Q5
Diag5
Q6
Reset _Diag6
Q7
Diag7
Gate
Control
Over
Temperature
Detect
-
+
VDG
=
+
-
-
+
=
OUT0
24
IOL
CH0
CH1
CH2
CH3
CH4
CH5
CH7
CH7
OUT1
23
OUT2
14
OUT3
13
OUT4
12
OUT5
11
OUT6
2
OUT7
1
April 2003
GND ^{5 -8}
17 - 20
1/12