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Configurable multi channel relay driver 2HS + 6HS/LS

Quantity $ per Unit Savings
1 - 9$3.980%
10 - 24$3.5810%
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Parameter NameParameter Value
Operating RangeAutomotive
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeAutomotive Safety
Package NameHTSSOP24

The L9026 is an eight-channel IC, with 2 fixed HS drivers and 6 configurable HS/LS drivers designed for Automotive applications (LEDs and Relays) and compatible with resistive, inductive and capacitive loads. The device offers advanced diagnostic and protection functionalities such as: short to GND, open load, overcurrent, over-temperature detections. The 8 output channels can be either driven by SPI or by 2 dedicated parallel inputs. Limp home functionality is also featured, which allows using 2 selected drivers in particularly faulty conditions, such as SPI fault, micro fault or supply UV. Daisy chain compatible even with 8bit SPI is available. The device is able to guarantee operations under cranking scenario down to VBATT = 3 V and guarantees very low quiescent current under RESET condition.

A serial peripheral interface (SPI) is used for control and configuration of the loads as well as of the device; besides, status feedback of all diagnostic functions is provided. For direct control and PWM there are two input pins available: these are connected to two defined outputs by default, but additional or different output mapping can be controlled by SPI.

As reported above, the device is available in two package versions: HTSSOP24 and VFQFPN32. Only for the QFN package 2 additional pins are available for safety reasons. In details, the NRES pin is used to reset internal registers to their default values and the DIS pin is used to disable all channels.

Key features
  • AEC-Q100 qualified
  • Six Configurable LS/HS drivers
  • Two High Side drivers
  • 2 parallel input pins with Input Mapping functionality
  • Cranking capability down to VBATT = 3 V
  • Digital supply voltage compatible with 3.3 V and 5 V microcontroller
  • Reverse battery protection on VBATT and on drain pins without external components
  • LED mode
  • Bulb Inrush Mode (BIM) to drive lamps and electronic loads
  • 2 Internal PWM Generator for microcontroller offload
  • Very low quiescent current (with usage of IDLE pin)
  • Limp Home mode (with usage of IDLE and IN pins)
  • Green Product (RoHS compliant)
  • Safety features
    • Temperature Sensor and Monitoring
    • Serial communications using address feedback, 1 parity bit, frame counter & short frame detection
  • 16-bit serial peripheral interface for control and diagnosis
  • Daisy Chain capability SPI, also compatible with 8-bit SPI devices
  • Package options: HTSSOP24, VFQFPN32
  • Full ISO26262 compliant, ASIL-B systems ready