STMicroelectronics L9300TD80T-TR

Overview

L9300TD80T-TR from STMicroelectronics is an AEC-Q100 qualified automotive power management and valve driver IC for transmission and braking systems. It integrates four voltage regulators (5 V/6.5 V buck, 5 V linear/tracking, two selectable-output linear), four tracking regulators configurable as wheel speed sensor interfaces, six current-controlled LS/HS drivers with ±8 mA accuracy in 0–0.5 A range, two high-side NFET pre-drivers, a CAN transceiver, dual watchdogs, and a 32-bit SPI interface - all in a single TQFP80 EP package.

For engineers reviewing the L9300TD80T-TR datasheet, L9300TD80T-TR pinout, L9300TD80T-TR application in transmission control units, or L9300TD80T-TR equivalent for solenoid driver integration, this page delivers verified regulator accuracy, driver current resolution, thermal limits, CAN compliance, and SPI-configurable timing behavior - critical for functional safety-critical automotive designs.

Technical Context

The L9300TD80T-TR implements a multi-domain power architecture: VDD1 is a synchronous buck regulator with internal N-ch FET delivering 5 V or 6.5 V at ±3% accuracy; VDD2 operates as either a ±20 mV tracking regulator or 5 V linear regulator (±2% accuracy, 200 mA); VDD3/VDD4 are external-pass-transistor linear regulators with ±2% output accuracy. All four TRK outputs track the TRK_SEL pin voltage within ±20 mV and support reconfiguration as wheel speed sensor interfaces.

Six current-controlled channels use LS/HS driver topology with programmable slew rate, dither, and 11-bit current set-point resolution. Each channel supports low-side or high-side operation with active freewheeling, and features integrated current sense with dual-range accuracy: ±8 mA (0–0.5 A) and ±1% (0.5–1.5 A). Two high-side pre-drivers include one PWM-capable up to ~18 kHz, and the integrated charge pump enables gate drive under low-battery conditions.

Key Specifications

Pinout & Package

TQFP80 EP (14 mm × 14 mm, exposed pad down), RoHS-compliant, thermally enhanced for automotive under-hood applications. Thermal resistance junction-to-case: 0.66–0.9 °C/W (2s2p PCB, cold plate).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive solenoid driver and power management applications.

Compared with MC33816 and RAA230122, the L9300TD80T-TR uniquely combines buck + tracking + external-pass regulation, integrated CAN, and ±20 mV TRK accuracy - making it the only single-package solution for ASIL-B-compliant transmission control units requiring solenoid drive, sensor biasing, and network communication.

Availability

L9300TD80T-TR is available at Aetrix Electronics and suitable for automatic transmission control units, electro-hydraulic brake modules, wheel speed sensor interface modules, and electric parking brake controllers requiring stable component supply across automotive production lifecycles.

Supply support for L9300TD80T-TR 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 over 30 years of AEC-Q100 qualification experience and broad automotive ecosystem support.

The L9300 series targets automotive power distribution and actuation - designed specifically for transmission, braking, and chassis control applications requiring high-temperature reliability, functional safety compliance, and integrated system-level integration.

FAQ

What is the maximum continuous current per driver channel?

Each of the six current-controlled channels supports up to 1.5 A continuous current in normal operating range (-40 °C to +150 °C) with ±1% accuracy. In extended range (0.5–2 A), accuracy degrades to ±4%. Peak current capability reaches 2 A for short durations, limited by thermal derating and internal overcurrent protection thresholds.

How does the TRKx pins function as wheel speed sensor interfaces?

TRK1–TRK4 can be configured via SPI to operate as differential comparators with internal hysteresis, accepting passive or active wheel speed sensor signals. When used in tracking mode, they replicate TRK_SEL voltage within ±20 mV; when reconfigured, they provide zero-crossing detection with programmable blanking time and fault reporting through SPI status registers.

Is the CAN transceiver galvanically isolated?

No, the integrated CAN transceiver is non-isolated and shares the same ground reference (GND) as the rest of the IC. It complies with ISO 11898-2 for high-speed CAN (up to 1 Mbps) and includes bus fault protection (±40 V common-mode range), but external isolation must be added if system-level galvanic separation is required.

What thermal management provisions exist for the TQFP80 EP package?

The exposed pad (down orientation for L9300TD80T-TR) must be soldered to a minimum 2s2p copper pour on the PCB, per JEDEC JESD51 guidelines. With proper cold-plate mounting, thermal resistance is 0.66–0.9 °C/W (junction-to-case); junction-to-ambient is 8.5 °C/W. Internal temperature sensor monitors die temperature and triggers thermal shutdown at 175 °C.