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L9823 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. L9823
Description  Octal Low-Side Driver for bulb, resistive and inductive loads with serial input control, output protection and diagnostic
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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L9823 Datasheet(HTML) 1 Page - STMicroelectronics

 
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L9823
April 2003
s
OUTPUTS CURRENT CAPABILITY UP TO
0.5A
s
CASCADABLE SPI CONTROL FOR
OUTPUTS
s
RESET FUNCTION WITH RESET SIGNAL OR
UNDERVOLTAGE AT VDD
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 VDD LOGIC SUPPLY
s
HIGH EMS IMMUNITY AND LOW EME
(CONTROLLED OUTPUT SLOPES)
s
FULL FUNCTIONALITY OF THE REMAINING
DEVICE AT NEGATIVE VOLTAGE DROP ON
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.
SO24 (20+2+2)
ORDERING NUMBER: L9823
Octal Low-Side Driver for bulb, resistive and inductive loads with
serial input control, output protection and diagnostic
BLOCK DIAGRAM
Diag1
Q1
CSB
SI
SCLK
SO
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
GND
Diag0
Diag7
Reset
Q0
CH0
OT0
Diag6
Q6
Q0
Q7
Diag2
Q2
CH3
CH4
CH5
CH1
Diag3
Q3
Diag4
Q4
Diag5
Q5
Q7
CH7
Diag7
Reset
Reset
Undervoltage
RESET
Q1
Q2
Q3
Q4
Q5
Q6
Diag1
Diag2
Diag3
Diag4
Diag5
Diag6
IOL
24
23
14
13
12
11
2
1
22
9
4
3
10
5 -8
17 - 20
Over
Temperature
Detect
+
-
+
-
=
=
+
-
Gate
Control
OL0
CH2
CH7
SFPD
15
VDG
Diag0
16
VDD
ISCB0


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