STMicroelectronics L99DZ200GTR

Overview

L99DZ200GTR from STMicroelectronics is an AEC-Q100 qualified automotive front door system IC integrating dual configurable H-bridge drivers (7.5 A/150 mΩ or 3 A/300 mΩ), four configurable high-side drivers (up to 1.5 A/500 mΩ), LIN 2.2a and high-speed CAN transceivers, dual 5 V regulators (V1 for MCU, V2 tracker), electro-chromic glass control, and fail-safe low-side switches - deployed in power window, mirror, and door lock actuation systems.

For engineers reviewing the L99DZ200GTR datasheet, L99DZ200GTR pinout, L99DZ200GTR application, or L99DZ200GTR equivalent, this device supports multi-load motor/bulb/LED driving with programmable soft-start, thermal supervision, current monitoring, and ASIL-B–capable safety features for automotive body electronics design.

Technical Context

The L99DZ200GTR implements a centralized door ECU architecture with integrated analog and digital subsystems: two dual-H-bridge drivers support bidirectional motor control (e.g., window lift/lower), while flexible high-side outputs (OUT7–OUT15) drive bulbs, LEDs, and external MOSFET gates with configurable R_ON and PWM timing. Its embedded 10-bit PWM timers per HS driver enable precise LED dimming and inrush current management.

Communication is handled by concurrent LIN (SAE J2602/SJ2962-1 compliant) and HS-CAN (ISO 11898-2/-5, SAE J2284/J2962-2) transceivers with bus-failure detection, local failure reporting, and wake-up capability. The isolated fail-safe block uses two 1 Ω low-side switches to forcibly pull down external HS MOSFET gates during thermal or fault events.

Key Specifications

Pinout & Package

LQFP64 package with exposed thermal pad (EP); 64-pin quad flat pack, RoHS-compliant, rated for −40 °C to +150 °C junction temperature.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive door ECU applications.

Compared with TPIC2603DQPWRQ1 and MC33883AER2, the L99DZ200GTR uniquely integrates dual-bus (LIN + HS-CAN), dual 5 V regulators, electro-chromic control, and generator mode - reducing system-level component count and enabling advanced ASIL-B–compliant door functions in a single LQFP64 package.

Availability

L99DZ200GTR is available at Aetrix Electronics and suitable for automotive front door modules, power trunk systems, electro-chromic mirror assemblies, and body control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for L99DZ200GTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management ICs, with broad AEC-Q100 product portfolio and ISO/TS 16949 certified manufacturing.

The L99DZ200GTR belongs to ST's L99 family of automotive system basis chips (SBCs), designed specifically for intelligent door module integration - combining power driving, communications, safety monitoring, and power regulation in one device.

FAQ

What is the maximum continuous current rating for the dual H-bridge outputs?

The L99DZ200GTR's dual H-bridge outputs (OUT1–OUT6) support 7.5 A continuous current per channel at R_ON = 150 mΩ under thermal constraints (T_j ≤ 150 °C, PCB copper area ≥ 400 mm²). Derating applies above 125 °C junction temperature; peak current capability reaches 15 A for <10 ms pulses with proper layout and heatsinking.

Does the L99DZ200GTR support both LIN and CAN simultaneously?

Yes - the device integrates independent LIN 2.2a and HS-CAN transceivers that operate concurrently. LIN handles low-speed diagnostics and configuration (e.g., mirror position calibration), while HS-CAN manages real-time actuator commands and status reporting within the vehicle network, with separate pins, registers, and fault reporting paths.

How is electro-chromic glass driven, and what voltage range does it support?

The L99DZ200GTR uses dedicated ECV (electro-chromic voltage) and ECDR (electro-chromic driver) pins to generate bidirectional ±20 V bias across EC glass. It supports analog dimming control via PWM-modulated output voltage, with built-in open-load detection and thermal supervision specific to EC element behavior.

What safety mechanisms are implemented for H-bridge short-circuit protection?

The device employs real-time drain-source voltage monitoring on external H-bridge MOSFETs, combined with configurable overcurrent thresholds and thermal expiration. Upon short-circuit detection, it disables affected outputs, asserts fault flags via SPI, and can trigger automatic recovery or latched shutdown based on register configuration - meeting ISO 26262 ASIL-B requirements.