E-L9823 Datasheet, PDF (1/19 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
Features
■ Outputs current capability up to 0.5 A
■ Cascadable SPI control for outputs
■ Reset function with reset signal or
undervoltage at V_DD
■ Programmable intrinsic output voltage
clamping at typ. 50 V for inductive switching
■ Overcurrent shutdown with latch-off for every
write cycle (SFPD = low)
■ Independent thermal shutdown of outputs
(SOA Protection)
■ Output status data available on the SPI using
8-bit I/O protocol up to 3.0 MHz
■ Low standby current with reset = low (typ.
35 µA @ VDD)
■ Open load detection (outputs off)
■ Single V_DD logic supply
■ High EMS immunity and low EME (controlled
output slopes)
■ Full functionality of the remaining device at
negative voltage drop on outputs (-1.5 V or
-3.0 A)
'!0'03
SO24
■ 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 inductive loads are
driven.
Chip select and cascadable serial 8-bit Interface
for outputs control and diagnostic data transfer.
Table 1.
Device summary
Order code
L9823
E-L9823
Package
SO24
SO24
Packing
Tube
Tube
April 2011
Doc ID 7791 Rev 5
1/19
www.st.com
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