L9969x
Datasheet
Automotive chip for single and dual H-bridge
Features
•
•
•
•
•
•
•
•
•
•
•
AEC-Q100 qualified
Full path RDS(on) less than 540 mΩ
Nominal continuous load current > 3 A
Operating battery supply voltage 4.5 V to 28 V
Operating VDD supply voltage 4.5 V to 5.5 V
All ECU internal pins can withstand up to 18 V
Output switching frequency up to 20 kHz
PowerSSO24
PowerSSO36
Monitoring of VDD supply voltage including bidirectional switch-off pin NABE
Overtemperature and short-circuit protection
Full diagnosis capability
Product status links
L9969S
L9969T
L9969U
Output stage with SPI-adjustable current limitation 5-8.6 A in 3 steps (two-point
regulation)
•
•
•
•
•
•
•
•
Fast switch-off open-drain input/output
Current-monitoring with current feedback output signal CF
Reliable full diagnostic capability
Product summary
Settable chip-address via bond-wire configuration on the silicon or E-Fuse
SPI-interface for configuration and diagnosis
Error history in diagnosis register
Order code Package
Packing
L9969S
L9969T
L9969U
PSSO24
Tape and reel
Two independent enable pins: "NABE" and "DIS"
PSSO36
Control of power stages by SPI or two input signals, PWM and DIR
(configurable via SPI)
•
•
•
Logic levels 5 V compatible
Conformity to improved EMC requirements due to smart H-bridge switching
Full ISO 26262 compliant, ASIL-B (D) systems ready
Description
L9969S/L9969U and L9969T are single and dual integrated H-bridges for resistive
and inductive loads featuring output current direction and supervising functions.
The PowerSSO24 houses one full H-bridge, while the PowerSSO36 houses both two
H-bridges that can work in parallel, through independent input driving commands.
Target application ranges from throttle control actuators to exhaust gas recirculation
control valves in automotive domain to a more general use to drive DC and Stepper
motors.
DS14029 - Rev 4 - May 2023
For further information contact your local STMicroelectronics sales office.
www.st.com