Product overview
Description
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.
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All 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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EDA Symbols, Footprints and 3D Models
STMicroelectronics - L9781
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L9781 | Active | LQFP 64 10x10x1.4 mm | Automotive | Ecopack2 | |
| L9781TR | Active | LQFP 64 10x10x1.4 mm | Automotive | 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 | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| L9781 | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L9781TR | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
L9781 Active
L9781TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors