Door Actuator driver with embedded LIN

The L99DZ120 is a door zone systems IC providing electronic control modules with enhanced power management power supply functionality, including various standby modes, as well as LIN physical communication layers.

The two low-drop voltage regulators of the devices supply the system microcontroller and external peripheral loads such as sensors and provide enhanced system standby functionality with programmable local and remote wake-up capability. In addition 8 high-side drivers to supply LEDs, 2 high-side drivers to supply bulbs increase the system integration level.

Up to 3 DC motors and 4 external MOS transistors in H-bridge configuration can be driven. All outputs are SC protected and implement an open-load diagnosis.

The ST standard SPI interface (4.0) allows control and diagnosis of the device and enables generic software development.

Key Features

  • AEC-Q100 qualified
  • 1 half bridge for 7.5 A load (RON  = 100 mΩ)
  • 1 half bridge for 7.5 A load (RON  = 150 mΩ)
  • 2 half bridges for 3 A load (RON  = 300 mΩ)
  • 1 configurable high-side driver for up to 1.5 A (RON  = 500 mΩ) or 0.35 A (RON  = 1600 mΩ) load
  • 1 configurable high-side driver for 0.8 A (RON  = 800 mΩ) or 0.35 A (RON  = 1600 mΩ) load
  • 3 configurable high-side drivers for 0.15 A/0.35 A (RON  =2 Ω)
  • 1 configurable high-side driver for 0.25 A/0.5 A (RON  = 2 Ω)
  • 4 configurable high-side drivers for 0.15 A/0.25 A (RON  = 5 Ω)
  • Internal 10bit PWM timer for each stand-alone high-side driver
  • Buffered supply for voltage regulators and 2 high-side drivers (OUT15 & OUT_HS / both P-channel) to supply e.g. external contacts
  • Programmable soft-start function to drive loads with higher inrush currents as current limitation value (for OUT1-6, OUT7, OUT8 and OUT_HS) with thermal expiration feature
  • All the embedded outputs come with protection and supervision features:
    • Current Monitor (high-side only)
    • Open-load
    • Overcurrent
    • Thermal warning
    • Thermal shutdown
  • Fully protected driver for external MOSFETs in H-bridge configuration
  • Two 5 V voltage regulators for microcontroller and peripheral supply
  • Programmable reset generator for power-on and undervoltage
  • Configurable window watchdog
  • LIN 2.2a compliant (SAEJ2602 compatible) transceiver
  • Separated (Isolated) fail-safe block with 2 LS (RON  = 1 Ω) to pull down the gates of the external HS MOSFETs
  • Thermal clusters
  • A/D conversion of supply voltages and internal temperature sensors
  • Embedded and programmable VS duty cycle adjustment for LED driver outputs


Technical Documentation

Product Specifications
Description Version Size
DB3100 DB3100: Automotive door actuator driver with embedded LIN 1.0 181 KB
DS11567 DS11567: Automotive door actuator driver with embedded LIN 4.0 2 MB

Publications and Collaterals

Description Version Size
L99DZ8x Family 1.0 721 KB
Selection Guides
Description Version Size
Smart power solutions for car body applications 4.0 3 MB
Description Version Size
Advanced door electronics solutions 1.0 696 KB
Support & Community

Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L99DZ120TR LQFP 64 10x10x1.4 Tape And Reel - - Active 4.348 1000 NEC EAR99 - MORE INFO DISTRIBUTOR AVAILABILITY
L99DZ120 LQFP 64 10x10x1.4 Tray - - Active - - NEC EAR99 - MORE INFO No availability reported, please contact our Sales office

(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L99DZ120TR ActiveLQFP 64 10x10x1.4AutomotiveEcopack2 0 0
L99DZ120 ActiveLQFP 64 10x10x1.4AutomotiveEcopack2 0 0

(**) The Material Declaration forms available on 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.