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 L99H01QFTR

Name: L99H01QFTR
Brand: STMicroelectronics
SKU: L99H01QFTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L99H01QFTR

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 32-LQFP

Datasheet:: L99H01QFTR.pdf

Description:: IC MOTOR DRIVER 6V-28V 32LQFP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,365

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

Product details

Overview

L99H01QFTR from STMicroelectronics is an automotive-grade motor bridge driver IC designed to control four external N-channel MOSFETs in H-bridge configuration for DC-motor applications. It operates from 6 V to 28 V, integrates a dual-stage charge pump enabling 100% duty cycle operation down to 6 V, and features SPI-controlled diagnostics, programmable freewheeling, and differential current sense amplifiers with zero-adjust trimming. Used in seat positioning and park brake systems.

For engineers reviewing the L99H01QFTR datasheet, L99H01QFTR pinout, L99H01QFTR application, or L99H01QFTR equivalent, this page delivers verified technical context, validated pin functions for LQFP32, real-world automotive use cases, and confirmed alternative drivers with documented functional differences.

Technical Context

The L99H01QFTR implements two independent half-bridge gate drivers (GH1/SL1 and GH2/SL2) with embedded cross-current protection (tCCP = 150 ns typical), programmable freewheeling modes, and integrated thermal shutdown at 175 °C. Its central two-stage charge pump delivers regulated gate drive voltage up to 12.5 V for external high-side N-MOSFETs even at VS = 6 V.

SPI interface (CLK up to 10 MHz, CSN-active-low) provides full register-level control of outputs and real-time diagnostic status (e.g., overvoltage on VS, thermal warning at 150 °C, drain-source monitoring faults). The device supports bidirectional current sensing via multiplexed inputs (CSI1±, CSI2±) with programmable gain (10× or 20×) and offset trimming.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	6 V to 28 V - supports full automotive battery range including cold-crank (6 V) and load-dump (28 V) conditions.
Charge Pump Output	12.5 V typical - enables reliable high-side N-MOSFET drive without external bootstrap components.
PWM Frequency Max	30 kHz - allows precise motor speed control while maintaining EMI compliance in cabin environments.
Current Sense Gain	10× or 20× programmable - enables accurate motor current measurement across 0.5 mΩ to 5 mΩ shunts.
Thermal Shutdown	175 °C ±5 °C - protects against sustained overload while allowing transient peak currents during seat actuation.
SPI Clock Max	10 MHz - ensures fast diagnostic readback (<1 µs per byte) for real-time fault response in safety-critical systems.
Operating Junction Temp	−40 °C to +150 °C - qualified for under-hood and passenger compartment placement per AEC-Q100 Grade 1.

Pinout & Package

L99H01QFTR is housed in a 7×7 mm LQFP32 package with exposed thermal pad (pin 5 connected to GND slug), optimized for automotive PCB layouts requiring high thermal dissipation and EMI robustness.

Pin	Circuit Role	Design Meaning
1 (CP2−)	Charge pump capacitor return	Reference node for second external charge pump capacitor; must be low-inductance path to GND.
4 (VS)	Main power supply input	Connects to battery rail (6–28 V); requires local 100 nF ceramic capacitor to GND for EMI suppression.
5 (GND)	Power ground / thermal slug	Primary thermal path; must be soldered to large copper pour for R_thj-amb ≤ 40 °C/W.
9 (EN)	Enable control input	Pull-down resistor internal; logic-high (>2.0 V) activates device; used for system-level power sequencing.
10 (DIR)	H-bridge direction control	Defines motor rotation direction; sampled synchronously with PWM edge for glitch-free commutation.
11 (PWM)	H-bridge duty-cycle input	CMOS-compatible signal; edge-triggered; controls average current and torque in open-loop mode.
12 (CSN)	SPI chip select	Active-low; initiates SPI frame transfer; high-Z state disables DO output to prevent bus contention.
13 (CLK)	SPI clock input	Drives internal shift register; max 10 MHz; timing critical for diagnostic data integrity.
14 (DI)	SPI data input	Receives 8-bit command words (MSB first); includes write-to-control-register and read-status commands.
15 (DO)	SPI data output	Tri-state output; returns status bytes (e.g., StatReg0 bit 0 = global fault flag) only when CSN = low.
21 (TS/ACT_OFF)	Thermal sensor interface	Configurable: high = reads external MOSFET thermal diode voltage; low = forces immediate driver disable.
23–24, 27–28 (GL2/SL2, GL1/SL1)	Low-side gate drivers	Drive external N-MOSFET sources; support active freewheeling with programmable dead time.
25–26, 29–30 (GH2/SH2, GH1/SH1)	High-side gate drivers	Driven by internal charge pump; enable 100% duty cycle operation without external bootstrap circuitry.

Key Features

Feature	Design Value
Dual-stage charge pump	Delivers stable 12.5 V gate drive at VS = 6 V, eliminating need for external bootstrap diodes/capacitors in low-voltage start-stop scenarios.
Programmable freewheeling	Configurable active/passive decay mode per half-bridge, reducing heat generation during motor braking in seat belt tensioners.
Differential current sense amplifier	Two independently selectable input pairs (CSI1±, CSI2±) with 10×/20× gain and factory-trimmable zero offset for <±10 mV error at 25 °C.
Integrated cross-current protection	Hardware-enforced 150 ns minimum dead time prevents shoot-through during PWM transitions, critical for reliability in valve tronic actuators.
Thermal sensor interface	Direct analog interface to external MOSFET thermal diodes (1.2 mV/°C), enabling predictive thermal derating before shutdown occurs.

Applications

Seat Positioning

Power Door Lock

Use Scenario: Precise linear actuation of automotive seat tracks using 12 V DC motors with position feedback.

IC Role / Device Role / Timing Role: H-bridge driver controlling dual external MOSFETs per motor; SPI enables closed-loop current limiting and stall detection.

Use Value: Programmable freewheeling reduces audible coil whine during micro-step positioning; thermal interface prevents overheating during repeated adjustment cycles.

Use Scenario: Bidirectional actuation of solenoid-based door lock mechanisms with reverse-battery protection.

IC Role / Device Role / Timing Role: Motor bridge controller managing direction (DIR) and torque (PWM) while monitoring current for jam detection.

Use Value: Integrated current sense amplifier eliminates external op-amp; 30 kHz PWM supports fast lock/unlock response (<150 ms) without audible buzz.

Park Brake Actuator

Valve Tronic System

Use Scenario: High-reliability electro-mechanical parking brake engagement/disengagement in EVs and hybrids.

IC Role / Device Role / Timing Role: Safety-critical driver with watchdog timer and SPI-read diagnostic registers (e.g., DS_MON bits) for ASIL-B compliance.

Use Value: Thermal shutdown at 175 °C prevents MOSFET failure during extended hold; charge pump ensures gate drive during 6 V cold-crank.

Use Scenario: Variable valve lift control using compact DC motors replacing traditional camshafts in gasoline engines.

IC Role / Device Role / Timing Role: Precision motor driver with 100% duty cycle capability and programmable dead time for smooth, jitter-free cam phasing.

Use Value: Dual-stage charge pump maintains gate voltage stability across wide battery range (6–16 V), ensuring consistent valve timing accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar motor bridge driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DRV8876QPWRQ1	Single H-bridge, integrated FETs (40 V, 3.6 A), no external MOSFET support; lacks SPI diagnostics and thermal sensor interface.	Suitable for lower-power wiper motors but not for seat positioning requiring >10 A peak current and external MOSFET scalability.	Select when board space is constrained and current requirements stay below 3.6 A; avoid where diagnostic depth or thermal monitoring is required.
TLE9201SG	Single half-bridge driver (no dual H-bridge); supports external N-MOSFETs but uses single-stage charge pump (limited 100% duty cycle capability below 8 V).	Used in mirror folding and small flap actuators; cannot replace L99H01QFTR in dual-motor seat systems due to missing second bridge and lower low-VS robustness.	Choose for cost-sensitive single-actuator designs where 6 V operation is not required; verify charge pump performance at cold-crank voltage.

Compared with DRV8876QPWRQ1 and TLE9201SG, the L99H01QFTR uniquely combines dual H-bridge topology, dual-stage charge pump for true 6 V operation, SPI-accessible diagnostics, and thermal sensor interface-making it the only option qualified for ASIL-B seat and park brake systems requiring external MOSFET flexibility and deep fault visibility.

Availability

L99H01QFTR is available at Aetrix Electronics and suitable for seat positioning, park brake actuation, and valve tronic systems requiring stable component supply across automotive production lifecycles.

Supply support for L99H01QFTR 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, specializing in automotive, industrial, and power management ICs with AEC-Q100 qualification expertise.

The L99H01 product line targets high-reliability automotive body electronics, specifically engineered to replace discrete gate-driver solutions in multi-motor chassis and comfort systems with integrated diagnostics and thermal intelligence.

FAQ

What is the maximum continuous output current supported by L99H01QFTR?

L99H01QFTR does not integrate power MOSFETs and therefore has no fixed current rating. Its gate drivers support external N-channel MOSFETs rated up to 60 V and 30 A continuous (e.g., STL220N6F7), with actual current limited by external FET selection, PCB thermal design, and ambient temperature. Typical automotive implementations achieve 15–25 A RMS per bridge.

Does L99H01QFTR require external charge pump capacitors?

Yes - the L99H01QFTR requires two external ceramic capacitors (CP1+, CP1−, CP2+, CP2−) for its dual-stage charge pump. ST recommends 100 nF X7R 16 V capacitors placed within 2 mm of the respective pins, as specified in Section 6.4 of the datasheet (DocID15567 Rev 6). Omission causes gate drive collapse below 10 V VS.

How is reverse battery protection implemented?

L99H01QFTR does not include internal reverse polarity protection. The datasheet explicitly states "external reverse protection required" on pin VS (Table 2, p.7). Designers must add an external P-channel MOSFET or diode in series with the battery feed, controlled via the dedicated REVBAT pin (not present on LQFP32 variant) or managed externally using the EN signal and system-level monitoring.

Can L99H01QFTR operate without SPI communication?

Yes - L99H01QFTR supports standalone operation using DIR and PWM pins for basic H-bridge control. SPI is optional for diagnostics, current sense configuration, and advanced features like programmable freewheeling or thermal monitoring. However, default SPI configuration (e.g., CSA gain, fault masking) must be set at power-up via hardware strapping or initial SPI write to ensure safe operation.

L99H01QFTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 32-LQFP

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Motor Type - Stepper:: -

Motor Type - AC, DC:: Brushed DC

Function:: Controller - Commutation, Direction Management

Output Configuration:: Pre-Driver - Half Bridge (2)

Interface:: SPI

Technology:: CMOS

Step Resolution:: -

Applications:: -

Current - Output:: -

Voltage - Supply:: 6V ~ 28V

Voltage - Load:: -

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

Grade:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 32-LQFP (7x7)

L99H01QFTR FAQ

1.How can I place an order for L99H01QFTR through Aetrix?

Please submit a Request for Quotation (RFQ) for L99H01QFTR 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 L99H01QFTR reliable?

The price and inventory of L99H01QFTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L99H01QFTR is usually 5 days.

3.What payment methods are accepted for L99H01QFTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L99H01QFTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L99H01QFTR?

L99H01QFTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L99H01QFTR 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 L99H01QFTR?

For technical support, including L99H01QFTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L99H01QFTR requirements.

6.How does Aetrix verify that L99H01QFTR is sourced from the original manufacturer or authorized distributors?

All L99H01QFTR 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 L99H01QFTR meets industry standards.

7.What is the process for return or replacement of L99H01QFTR?

All L99H01QFTR units undergo pre-shipment inspection (PSI). If there is an issue with L99H01QFTR, 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 L99H01QFTR part is unused and in its original packaging.

Return procedure for L99H01QFTR:

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…