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  • The L9781 is a multi valve pre-driver capable of driving 11 external N-channel logic level MOSFETs, controlling up to 5 inductive loads through peak and hold current control and one DC/DC step-up converter, providing full protection against accidental faults on the external hardware. The load peak and hold current control (together with the diagnosis) is done by the internal configurable Finite State Machines (FSMs) needing only the start of actuation commands from the main microcontroller.

    Key Features

    • AEC-Q100 qualified
    • 1 x DC/DC converter controller for VTank voltage generation (up to 80 V):
      • 1 x low-side push-pull type N-channel MOSFET pre-driver
      • 1 x current sensing block for current limitation
      • 1 x voltage comparator with hysteresis for VTank voltage sensing
    • 2 x driving channel controllers each made up of:
      • 1 x high-side push-pull type VTank N-channel MOSFET pre-driver
      • 1 x high-side push-pull type VBat N-channel MOSFET pre-driver
      • 2 x low-side push-pull type N-channel MOSFET pre-driver
      • 1 x differential amplifier with programmable gain for current sensing & peak current detection
      • 1 x digital-to-analog converter for peak current threshold setting
      • 1 x HW protection and diagnosis block for full load protection from accidental external short circuits
    • 1 x additional peak and hold controller:
      • 1 x high-side push-pull type VBat N-channel MOSFET pre-driver
      • 1 x low-side push-pull type N-channel MOSFET pre-driver
      • 1 x differential amplifier with programmable gain for current sensing and peak current detection
      • 1 x digital-to-analog converter for peak current threshold setting
      • 1 x HW protection and diagnosis block for full load protection from accidental external short circuits
    • 1 x 32 bit SPI interface (up to 8 MHz)
      • IC general control
      • Programmable parameters setting
      • Diagnosis and hardware protection management

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9781
Active
LQFP 64 10x10x1.4 Automotive Ecopack2
L9781TR
Active
LQFP 64 10x10x1.4 Automotive Ecopack2

L9781

Package:

LQFP 64 10x10x1.4

Material Declaration**:

Marketing Status

Active

Package

LQFP 64 10x10x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9781TR

Package:

LQFP 64 10x10x1.4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 64 10x10x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L9781 No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tray LQFP 64 10x10x1.4 -40 150 MALAYSIA 4.8 / 1k
L9781TR Available at 2 distributors

Distributor availability ofL9781TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 59 1 Order Now
MOUSER WORLDWIDE 1026 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

59

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1026

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-25

Buy now
Active
EAR99 NEC Tape And Reel LQFP 64 10x10x1.4 -40 150 MALAYSIA 4.8 / 1k

L9781

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

4.8 / 1k

ECCN (EU)

NEC

Packing Type

Tray

Package

LQFP 64 10x10x1.4

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

4.8 / 1k

Country of Origin

MALAYSIA

L9781TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

4.8 / 1k

Distributor availability ofL9781TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 59 1 Order Now
MOUSER WORLDWIDE 1026 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

59

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1026

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

LQFP 64 10x10x1.4

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

4.8 / 1k

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors