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L9781
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L9781 Overview
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.
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
- 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 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 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
- IC general control
- Programmable parameters setting
- Diagnosis and hardware protection management
Product Parameters
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prmis_id
CP252367
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item_name
L9781
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p_445
-
p_1387
6.64
-
p_4418
1000
-
parent_id
PF253259
-
p_4906
false
-
p_5113
0
-
p_163
Active
Technical Documents
-
AN5319 Lamp switch management with L9177ADetails>>
Other distributor's price
Distributor | Part # | Mfg. | Description | Price |
---|---|---|---|---|
![]() |
L9781 | STMicroelectronics | Pts Smart Power |
1000---$5.4520 |
![]() |
L9781 | STMicroelectronics | 10GX PRE-TERM ASSY WHI 28FT |
1---$614.8700 |
![]() |
L9781 | STMicroelectronics |
1000---$5.6800 |
|
![]() |
L9781 | STMicroelectronics | Power Management Specialized - PMIC Powertrain IC AutoM PTS Smartpower |
1---$11.4700 10---$10.3600 25---$9.8700 100---$8.5800 250---$8.1900 500---$7.4700 |
![]() |
L9781 | STMicroelectronics | Asic |Stmicroelectronics L9781 |
1---$11.4700 |
![]() |
L9781 | STMicroelectronics | WIDE RANGE AIR FUEL SENSOR CONTROL INTER - Tape and Reel (Alt: L9781TR) |
1000---$6.1330 2000---$6.0091 4000---$5.8853 6000---$5.7614 8000---$5.6375 10000---$5.5136 100000---$5.3896 |
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