Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

STMicroelectronics L99MH98-TR

Name: L99MH98-TR
Brand: STMicroelectronics
SKU: L99MH98-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L99MH98-TR

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 48-VFQFN Exposed Pad

Datasheet:: L99MH98-TR.pdf

Description:: OCTAL HALF-BRIDGE PRE-DRIVER

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:250

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

L99MH98-TR from STMicroelectronics is an AEC-Q100 qualified, ISO 26262 ASIL-B compliant octal half-bridge pre-driver for automotive DC motor control. It drives up to sixteen N-channel MOSFETs (eight high-side/low-side pairs), supports 50 kHz PWM, features adaptive three-stage gate current control up to 120 mA, and enables indirect current sensing without shunt resistors - deployed in power lift gates, seat adjustment, and sunroof actuation.

For engineers reviewing the L99MH98-TR datasheet, L99MH98-TR pinout, L99MH98-TR application, or L99MH98-TR equivalent, this page delivers verified technical context, SPI-configurable diagnostics, V_DS monitoring per channel, thermal shutdown at 170–190 °C, and wettable-flank QFN48 package layout details essential for functional safety-compliant motor drive design.

Technical Context

The L99MH98-TR implements a fully configurable octal pre-driver architecture with independent GHx/SHx/GLx terminal pairing, enabling arbitrary H-bridge formation (e.g., quad H-bridges or eight discrete half-bridges). Its SPI interface (24-bit, out-of-frame) configures overvoltage thresholds, gate current profiles, and diagnostic reporting including open-load, short-to-battery/GND, and drain-source fault detection.

Each channel integrates adaptive gate control with programmable I_STEP1–3 sourcing/sinking (up to ±76 mA), V_DS monitoring for short-circuit protection, and four dedicated diode control pins for temperature-assisted calibration of indirect current measurement. The charge pump delivers V_CP = V_DH + 8.2–13 V at 325–475 kHz to sustain high-side gate drive across 6–28 V supply range.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DH Range	6–28 V operating; extended 5–6 V functionality - supports wide automotive battery voltage transients including cold-crank.
PWM Frequency	Up to 50 kHz - enables precise speed/torque control in brushed DC motors without audible noise.
Gate Current	Programmable source/sink up to ±76 mA (ISTEP3 mode) - reduces switching losses and EMI via controlled slew rate.
Thermal Shutdown	170–190 °C activation (T_{jSD_ON}) with 160–180 °C hysteresis - ensures safe derating before silicon damage.
Diagnostic Coverage	SPI-reportable off-state faults: open load, short-to-battery, short-to-GND per channel - meets ASIL-B FMEDA requirements.
Quiescent Current	1.05 μA in reset mode - enables ultra-low-power sleep for always-on vehicle modules.
Package	VFQFPN48L (7 × 7 × 0.9 mm) with wettable flanks - supports automated optical inspection (AOI) of solder joints.

Pinout & Package

VFQFPN48L package with exposed pad (connected to GND), 0.4 mm pitch, wettable flanks for reliable solder joint inspection. Pin count: 48 signal terminals + exposed pad.

Pin/Terminal	Circuit Role	Design Meaning
GH1–GH8	High-side gate drive outputs	Analog voltage outputs driving external N-MOSFET gates; each configurable for three-stage current profile.
GL1–GL8	Low-side gate drive outputs	Analog voltage outputs for low-side N-MOSFET gates; paired independently with any SHx/GHx for flexible bridge topology.
SH1–SH8	High-side source connections	Return paths for high-side MOSFET sources; referenced to V_DH, support floating high-side operation.
SL	Common low-side source node	Shared return for all low-side MOSFET sources; enables single-point Kelvin sensing and current path consolidation.
SDO/SDI/SCLK/CSN	SPI interface signals	24-bit out-of-frame serial interface with internal pull-down (SDI/SCLK) and pull-up (CSN) - no external biasing required.
DIODE1–DIODE4	External diode control	Four GPIOs for calibrating indirect current measurement via temperature-stable diode forward voltage tracking.
CSO1/CSO2	Current sense amplifier outputs	Analog outputs for indirect MOSFET current measurement - eliminates need for shunt resistors and associated power loss.
DIAGN	Active-low diagnostic flag	Open-drain output asserting fault condition (e.g., overtemperature, overvoltage) - directly interfaces MCU interrupt input.

Key Features

Feature	Design Value
ASIL-B compliance	Fully documented fault coverage per ISO 26262:2018, including diagnostic test routines, watchdog timeout, and dual-redundant monitoring paths.
Adaptive gate control	Three-stage programmable current (ISTEP1–3) per channel - optimizes EMI, switching loss, and MOSFET stress across load conditions.
Indirect current sensing	Supports MOSFET R_DS(on)-based current measurement using CSO1/CSO2 outputs - reduces BOM cost and PCB area vs. shunt solutions.
V_DS monitoring	Per-channel drain-source voltage sensing enables fast short-circuit detection (<1 µs response) without external comparators.
Generator mode	Enables regenerative braking in power trunk/tailgate applications by reversing H-bridge energy flow into battery.

Applications

Power Lift Gate

Automotive Seat Control

Use Scenario: Motorized rear hatch actuation requiring bidirectional torque, soft-stop, and obstacle detection.

IC Role / Device Role / Timing Role: Octal pre-driver configures dual H-bridges to drive two 12 V DC motors with independent PWM and current feedback.

Use Value: Generator mode recovers kinetic energy during closing; V_DS monitoring detects jamming within 1 µs for immediate shutdown.

Use Scenario: Multi-axis seat position adjustment (fore/aft, recline, lumbar) with smooth motion and memory recall.

IC Role / Device Role / Timing Role: Configured as eight independent half-bridges, each controlling one motor winding with 50 kHz PWM resolution.

Use Value: Indirect current sensing eliminates shunts, reducing heat and board space; ASIL-B diagnostics ensure occupant safety compliance.

Sunroof / Sliding Door

Steering Column Adjustment

Use Scenario: Quiet, jerk-free glass panel movement with pinch detection and auto-reverse on obstruction.

IC Role / Device Role / Timing Role: Quad H-bridge configuration drives dual-directional sunroof motor with active freewheeling and SPI-reported stall current.

Use Value: Adaptive gate control minimizes EMI to avoid radio interference; thermal warning at 140–160 °C prevents motor overheating.

Use Scenario: Precision vertical/horizontal column positioning with haptic feedback and crash-responsive retraction.

IC Role / Device Role / Timing Role: Four H-bridges manage two motors (height + tilt), each with independent diagnostics and reverse-battery MOSFET control.

Use Value: Reverse battery protection MOSFET control safeguards against jump-start damage; timeout watchdog ensures MCU liveness.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal half-bridge pre-driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE9201SE	Quad half-bridge (4-channel), lower gate current (±20 mA max), no indirect current sensing, SPI-16 bit	Limited to simpler 4-motor systems; lacks generator mode and ASIL-B documentation depth	Choose for cost-sensitive non-ASIL-B seat controls where full 8-channel density isn't required
BD3901FV	Octal high-side pre-driver only (no low-side drivers), no SPI, analog control inputs, 12 V max V_DH	Requires external low-side FETs and separate logic; unsuitable for H-bridge or regenerative applications	Select when only high-side switching is needed and system-level diagnostics are handled externally

Compared with TLE9201SE and BD3901FV, the L99MH98-TR uniquely combines full octal half-bridge flexibility, ASIL-B certification, indirect current sensing, and generator mode - making it the only drop-in solution for safety-critical, multi-motor automotive body electronics demanding integrated diagnostics and energy recovery.

Availability

L99MH98-TR is available at Aetrix Electronics and suitable for automotive seat control, power lift gate, and sunroof actuation requiring stable component supply across extended temperature (-40 to 150 °C) and long lifecycle commitments.

Supply support for L99MH98-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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, and automotive-grade analog/mixed-signal devices.

The L99MH98 belongs to ST's Automotive Power Drivers product line, engineered specifically for ASIL-B compliant DC motor control in body electronics - emphasizing functional safety, EMI robustness, and system-level integration.

FAQ

What is the maximum gate current capability of the L99MH98-TR?

The L99MH98-TR supports programmable gate source/sink current up to ±76 mA in ISTEP3 mode (configuration bits ISTEP3_CONFx = 1011), with 13 additional programmable steps between ±1.58 mA and ±42 mA. This enables precise optimization of MOSFET switching speed, EMI, and power loss - verified per DS14611 Rev 2 Table 11.

How does the L99MH98-TR achieve ASIL-B compliance?

ASIL-B compliance is achieved through redundant monitoring (V_DH/V_DD supply, temperature, charge pump), SPI-accessible diagnostic registers, timeout watchdog for MCU supervision, and per-channel fault detection (open-load, short-to-battery/GND, V_DS overcurrent). All safety mechanisms are documented in ST's ISO 26262 safety case (AN5027).

Can the L99MH98-TR drive both high-side and low-side MOSFETs simultaneously in H-bridge configuration?

Yes - the L99MH98-TR allows arbitrary pairing of GHx/SHx/GLx terminals via SPI configuration, enabling true H-bridge formation (e.g., GH1+SH1+GL2+SL for one bridge). Each high-side driver uses the internal charge pump (V_CP = V_DH + 8.2–13 V), while low-side drivers reference SL, supporting synchronous rectification and active freewheeling.

What package type and soldering considerations apply to the L99MH98-TR?

The L99MH98-TR uses VFQFPN48L (7 × 7 × 0.9 mm) with wettable flanks and an exposed thermal pad tied to GND. Recommended reflow profile follows JEDEC J-STD-020D; stencil aperture for the exposed pad is 80% coverage with 0.15 mm thickness. Wettable flanks enable AOI verification of side-solder joint integrity - critical for automotive reliability.

L99MH98-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 48-VFQFN Exposed Pad

Packaging:: Cut Tape (CT)

Product Status:: Active

Motor Type - Stepper:: Bipolar

Motor Type - AC, DC:: Brushed DC

Function:: Controller - Current Management

Output Configuration:: Pre-Driver - Half Bridge (8)

Interface:: SPI

Technology:: NMOS

Step Resolution:: -

Applications:: General Purpose

Current - Output:: 120mA

Voltage - Supply:: 6V ~ 28V

Voltage - Load:: -

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 48-VFQFPN (7x7)

L99MH98-TR FAQ

1.How can I place an order for L99MH98-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L99MH98-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for L99MH98-TR reliable?

The price and inventory of L99MH98-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L99MH98-TR is usually 5 days.

3.What payment methods are accepted for L99MH98-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L99MH98-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L99MH98-TR?

L99MH98-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L99MH98-TR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for L99MH98-TR?

For technical support, including L99MH98-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L99MH98-TR requirements.

6.How does Aetrix verify that L99MH98-TR is sourced from the original manufacturer or authorized distributors?

All L99MH98-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that L99MH98-TR meets industry standards.

7.What is the process for return or replacement of L99MH98-TR?

All L99MH98-TR units undergo pre-shipment inspection (PSI). If there is an issue with L99MH98-TR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The L99MH98-TR part is unused and in its original packaging.

Return procedure for L99MH98-TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…