Specifications
Manufacturer: STMicroelectronics
Device Type: Automotive qualified eight-channel configurable high-side and low-side power switch driver component, supplied on tape and reel for automated surface mounting, tailored for 12V vehicle power networks to drive solenoid valves, actuators and small inductive loads
Electrical Specifications
Battery input voltage range: 5 V to 18 V
Logic supply voltage: 4.75 V to 5.25 V
Compatible with standard TTL and CMOS logic levels
Embedded power MOSFET layout and conduction resistance parameters
Twelve built-in power MOSFETs in total
Four channels support switchable high-side or low-side operation, maximum on-resistance 0.6 ohm at 175°C junction temperature
Four dedicated low-side channels with maximum on-resistance 0.6 ohm
Four optimized low-side channels with maximum on-resistance 0.3 ohm
All eight channels can be paralleled to work as unified low-side outputs with peak on-resistance limited to 0.3 ohm
Internal clamping voltage for low-side outputs stands at 37 V typical value
Ambient operating temperature range: -40°C to 125°C
Maximum allowable junction temperature: 175°C
Automotive grade certification: AEC-Q100 Grade 1
Package form: 36-pin PowerSSO package with exposed thermal pad
Packaging style: continuous tape and reel assembly format
Moisture sensitivity level: MSL 3
Core Characteristics
Flexible channel layout options
Two primary operating configurations are available. The entire eight channels can be set as low-side switches for straightforward on-off load control. Alternatively, four bidirectional channels paired with four fixed low-side channels can be deployed. The first four channels can be arranged into H-bridge circuits, with integrated freewheeling paths for PWM regulated inductive loads, removing the need for external flyback diodes. Operation can be controlled either through SPI serial communication or parallel PWM input signals.
SPI control and full fault diagnosis system
All chip configuration settings, output switching operations and fault status retrieval are completed via SPI bus. Adjustable signal slew rate is integrated to restrain switching noise and improve electromagnetic compatibility performance. Each individual channel carries independent diagnostic capabilities, covering open load detection, short circuit to ground, short circuit to battery terminal and overcurrent safeguard. Overcurrent faults can be configured as latched state or automatic recovery mode per channel demands.
Multistage protective design
Global thermal shutdown function halts all outputs once the chip overheats to avoid permanent damage under prolonged overload conditions. Every pin is strengthened to withstand automotive voltage surges, load dump pulses and electrostatic discharges. Undervoltage lockout mechanism prevents unstable output actions when supply voltage drops below the valid threshold.
Automotive reliability optimization
Exposed thermal pad design enhances heat dissipation during sustained high-load operation. Halogen-free packaging materials satisfy RoHS environmental requirements for automotive applications. Multiple low-power sleep modes cut down static power draw when vehicles remain parked for long periods.
Application Fields
Automotive body control modules: driving door locks, rearview mirror motors, small DC motors and electromagnetic actuators
Auxiliary automotive lighting control and windshield wiper system load switching
Chassis control units: brake system valves and suspension solenoid valve driving
HVAC systems: air damper valve regulation and ventilation actuator control
Light commercial vehicle cabin centralized multi-load drive modules
Automotive hydraulic and pneumatic systems: proportional valves and electromagnetic switch control
