Product overview
Description
The L9951 is a microcontroller driven multifunctional rear door actuator driver for automotive applications. Up to two DC motors and two grounded resistive loads can be driven with three half bridges and two highside drivers. The integrated standard serial peripheral interface (SPI) controls all operation modes (forward, reverse, brake and high impedance). All diagnostic informations are available via SPI.
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All features
- Overload diagnostic for all outputs
- Open load diagnostic for all outputs
- Charge Pump output for reverse polarity protection
- Programmable PWM control of all outputs
- Current monitor output for all highside drivers
- All outputs short circuit protected
- One half bridge for 7.4A load (ron= 150mΩ)
- Two highside drivers for 1.25A load (ron= 800 mΩ)
- Two half bridges for 5A load (ron= 200mΩ)
- Very low current consumption in standby mode (IS< 3μA, typ. Tj≤85 ˚C)
- All outputs over temperature protected
- Programmable Softstart function to drive loads with higher inrush currents (i.e.current >7.4A, >5A, >1.25A)
Circuit Diagram
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STMicroelectronics - L9951
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L9951 | NRND | PowerSO 36 | Automotive | Ecopack2 | |
| L9951TR | Active | PowerSO 36 | Automotive | Ecopack2 | |
| L9951XP | NRND | PowerSSO 36 | Automotive | Ecopack2 | |
| L9951XPTR | Active | PowerSSO 36 | 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) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L9951 | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L9951XPTR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L9951XP | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L9951TR | | | distributors No availability of distributors reported, please contact our sales office |
L9951 NRND
L9951XPTR Active
L9951XP NRND
L9951TR 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