Product overview
Description
The L9305 is a configurable, monolithic solenoid driver IC designed for the control of linear solenoids for automatic transmission, electronic stability control, and active suspension applications. The four channels can be configured as either low side or high side drivers in any combination. The device includes the power transistor, recirculation transistor and current sensing for both the power and recirculation transistor. This architecture guarantees redundancy of the current measurement for each channel.
The regulated current is programmable in the range of 0-1.5 A (normal range), with a resolution of 0.25 mA, or 0-2 A (extended range), with a resolution of 0.33 mA. The user can superimpose configurable dither modulation over the set point current.
A 32-bit CRC protected SPI interface is used for configuration and control of all channels and provides status feedback of all diagnostic functions. An active low reset input, RESN, is used to disable all channels and resets internal registers to their default values. A safe enable path is provided through the EN_DR pin and the integrated Fail Safe Pre-driver. An isolated redundant safety switch-off path ensures that critical internal faults disable the fail safe pre-driver. An active high enable pin, EN_DR, is used to enable or disable the operation of all channels. When the EN_DR pin is low, all channels are disabled. A fault output pin is provided and can be used to generate an external interrupt to the microcontroller whenever a fault is detected. The user can map specific faults to the FAULTn pin based on their specific system requirements.
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All features
- AEC-Q100 qualified
- 4-channel independent LSD/HSD current controlled drivers
- Integrated current sense path
- Current accuracy (in normal range)
± 5 mA in 0 to 0.5 A range ± 1% in 0.5 A to 1.5 A range - Current accuracy (in extended range)
± 15 mA in 0 to 0.3 A range ± 5% in 0.3 A to 0.5 A range ± 4% in 0.5 A to 2 A range - Max driver RDSON 375 mΩ @ 175 °C
- 13-bit current set-point resolution
- Variable and fixed frequency current control
- Programmable dither function
- Selectable driver slew rate control
- Safety features
- High side fail safe ENABLE switch pre-driver with VDS monitoring
- Redundant safe enable path
- Advanced diagnosis and monitoring using BIST
- Temperature sensor and monitoring
- Redundant current sensing for all channels
- Calibration & configuration memory including CRC
- Secure serial communications using address feedback, 5-bit CRC, frame counter & long/short frame detection
- Register verification
- 32-bit SPI communications with 5-bit CRC message verification
- Package options: PWSSO36, TQFP48
- Full ISO26262 compliant, ASIL-D systems ready
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STMicroelectronics - L9305
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L9305EP | Active | PowerSSO 36 | Automotive | Ecopack2 | |
| L9305EP-TR | Active | PowerSSO 36 | Automotive | Ecopack2 | |
| L9305QFP | Active | TQFP 48 7x7x1.0 | Automotive | Ecopack2 | |
| L9305QFP-TR | Active | TQFP 48 7x7x1.0 | 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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L9305QFP-TR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L9305EP-TR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L9305EP | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L9305QFP | | | distributors No availability of distributors reported, please contact our sales office |
L9305QFP-TR Active
L9305EP-TR Active
L9305EP Active
L9305QFP 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