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  • The L9352B is designed to drive inductive loads in low side configurations like hydraulic valves used in ABS/ESC systems.

    Integrated active Zener diodes clamp (for channel1 and 2) or free wheeling diodes (for channel 3 and 4) allow the recirculation of the inductive loads.
    All four channels are monitored with a status output. All wiring to the loads and supply pins of the device are controlled. The device is selfprotected against short circuit at the outputs and overtemperature. For each channel, one independent push-pull status output is used for a parallel diagnostic function.
    Channel 3 and 4 work as current controlled channels. The target value of the current is given by the duty cycle (DC) of the 2 kHz PWM input signal.
    The output current is controlled through the output PWM of the power stage. The regulator limits of 10% or 90% are detected and monitored with the status signal. The current is measured during the recirculation phase of the load.
    Using an external clock frequency of 250 kHz, the PWM output frequancy is 3.9 kHz.
    A digital PI (proportional and integrating) regulator is performed in order to internally control the target current basing on the load current measurements.

    Key Features

    • Regulator error control
    • Regulator drift detection
    • Electrostatic discharge (ESD) protection
    • External clock control
    • Ground and supply loss detection
    • Four low-side output driver with protection diagnostics.2 channels designed as conventional switch (rON = 0.2 typ.) with integrated 60 V Zener diodes clamp.2 current controlled channels (rON = 0.2 typ.) with current range from 0 mA to 2.25 A typ. with integrated recirculation diodes.
    • Short circuit protection
    • Output slope control
    • Open load and over load current detection
    • Recirculation path control
    • Selective overtemperature shutdown

Circuit Diagram

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Technical Documentation

    • Description Version Size Action
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      DS3482
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      7.0
      328.73 KB
      PDF
      DB0620

      Four channel valve driver

      DS3482

      Intelligent quad (2 x 5A/2 x 2.5A) low-side switch

    • Description Version Size Action
      AN5074
      Charge pump stress estimation in switching applications
      1.0
      1.84 MB
      PDF
      AN5084
      How to improve EMI behavior in switching applications
      1.0
      4.69 MB
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      AN2791
      L9352B coil driver for ABS/ESP applications: current regulated channel analysis
      2.2
      641.68 KB
      PDF
      AN5074

      Charge pump stress estimation in switching applications

      AN5084

      How to improve EMI behavior in switching applications

      AN2791

      L9352B coil driver for ABS/ESP applications: current regulated channel analysis

    • Description Version Size Action
      UM0546
      PTB801DB evaluation board for ABS valve drivers system
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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9352B-LF
Active
PowerSO 36 Automotive Ecopack2
L9352B-TR-LF
Active
PowerSO 36 Automotive Ecopack2

L9352B-LF

Package:

PowerSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9352B-TR-LF

Package:

PowerSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO 36

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
L9352B-TR-LF Available at 1 distributors

Distributor availability ofL9352B-TR-LF

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 590 1 Order Now

Distributor reported inventory date: 2020-09-17

Distributor Name

MOUSER

Stock

590

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-17

Buy now
Active
EAR99 NEC Tape And Reel PowerSO 36 -40 150 MALAYSIA 4.0 / 1k
L9352B-LF Available at 2 distributors

Distributor availability ofL9352B-LF

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 265 1 Order Now
MOUSER WORLDWIDE 204 1 Order Now

Distributor reported inventory date: 2020-09-17

Distributor Name

DIGIKEY

Stock

265

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

204

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-17

Buy now
Active
EAR99 NEC Tube PowerSO 36 -40 150 MALAYSIA 4.0 / 1k

L9352B-TR-LF

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

4.0 / 1k

Distributor availability ofL9352B-TR-LF

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 590 1 Order Now

Distributor reported inventory date: 2020-09-17

Distributor Name

MOUSER

Stock

590

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-17

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

PowerSO 36

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

4.0 / 1k

Country of Origin

MALAYSIA

L9352B-LF

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

4.0 / 1k

Distributor availability ofL9352B-LF

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 265 1 Order Now
MOUSER WORLDWIDE 204 1 Order Now

Distributor reported inventory date: 2020-09-17

Distributor Name

DIGIKEY

Stock

265

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

204

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-17

ECCN (EU)

NEC

Packing Type

Tube

Package

PowerSO 36

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

4.0 / 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