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STMicroelectronics L99MC6GJTR
- Part No.:
- L99MC6GJTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-PowerLFSOP (0.154", 3.90mm Width)
- Datasheet:
-
L99MC6GJTR.pdf
- Description:
- IC PWR DRVR N-CHAN 1:6 PWRSSO16
- Quantity:
- Payment:
- Shipping:
Inventory:1,320
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Product details
Overview
L99MC6GJTR from STMicroelectronics is an AEC-Q100 qualified automotive 6-channel configurable driver IC with three self-configuring high-/low-side outputs (CH1–CH3) and three dedicated low-side outputs (CH4–CH6), RON = 0.7 Ω (typ), 0.6 A minimum current limit per channel, SPI interface, and integrated open-load/overtemperature/short-circuit protection - used in mirror adjustment, LED headlamp control, and relay-driven body electronics.
For engineers reviewing the L99MC6GJTR datasheet, L99MC6GJTR pinout, L99MC6GJTR application, or L99MC6GJTR equivalent, this page delivers verified technical context, real-world diagnostic behavior, PWM and bridge-mode timing constraints, and validated alternative options for automotive power distribution systems.
Technical Context
The device implements dual-supply operation with VS (battery rail, up to 28 V) and VCC (3.0–5.25 V logic supply), enabling crank-start compatibility down to 3 V. Its six channels are partitioned into two functional groups: CH1–CH3 support dynamic high-side/low-side reconfiguration via SPI register settings, while CH4–CH6 operate exclusively as low-side switches with fixed topology.
Diagnostic capability is embedded in a 16-bit SPI interface supporting read/write operations, global status reporting, and Read-and-Clear functions. Each channel provides independent fault detection - including open-load in off-state, overcurrent, temperature warning (150 °C), and thermal shutdown (175 °C) - with all outputs protected by internal clamp diodes and cross-current protection in bridge mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RON (typ) | 0.7 Ω at Tj = 25 °C - enables <1.5 W conduction loss per channel at 0.6 A, reducing thermal stress in compact automotive modules. |
| Output current limit | Min. 0.6 A per channel - ensures reliable driving of 12 V incandescent bulbs (e.g., side markers), small solenoids, and LED strings without external current sensing. |
| VCC range | 3.0 V to 5.25 V - supports direct connection to MCU I/O rails and maintains full functionality during cold-crank (3 V) battery conditions. |
| Standby current | 5 µA (typ) - allows permanent connection to vehicle battery without measurable parasitic drain in sleep mode. |
| SPI interface | 16-bit standard serial peripheral interface - enables full configuration, real-time diagnostics, and fault-clearing using industry-standard MCU SPI peripherals without custom protocol stacks. |
| Protection features | Overtemperature, short-circuit, open-load (off-state), and cross-current - eliminates need for discrete protection components in mirror actuator or seat control modules. |
| AEC-Q100 grade | Qualified per Grade 1 (−40 °C to +125 °C ambient) - certified for under-hood and cabin-mounted applications requiring automotive reliability. |
Pinout & Package
Package: PowerSSO-16 (exposed thermal pad, surface-mount, RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / TAB | GND | Power ground reference and primary thermal path - must be soldered to large PCB copper pour for thermal management. |
| 3, 13, 15 | SRC1–SRC3 | Sources for self-configurable channels - connect to load return when configured as high-side; tied to GND when configured as low-side. |
| 4, 5, 12, 2, 16, 14 | DRN1–DRN6 | Drain terminals - DRN1–DRN3 serve as HS output (VS-connected) or LS output (GND-connected); DRN4–DRN6 are fixed LS outputs. |
| 6 | IN/PWM | Direct PWM input for CH2 - bypasses SPI for time-critical motor commutation or LED dimming; other channels require SPI control. |
| 8 | VCC | Logic supply input - requires local 100 nF ceramic decoupling to GND for stable SPI communication and register retention. |
| 11 | DI | SPI data input - accepts 16-bit command words (MSB-first) from MCU; CMOS-level compatible with 3.3 V or 5 V controllers. |
| 9 | DO | SPI data output - tri-state when CSN high; returns 16-bit status word containing global error flags and per-channel fault bits. |
| 7 | CSN | SPI chip select (active low) - initiates SPI frame on falling edge; must remain low for full 16-clock cycle during transfer. |
| 10 | SCK | SPI clock input - supports up to 2 MHz clock rate; timing defined per Figure 8/9 in datasheet for reliable sampling. |
Key Features
| Feature | Design Value |
|---|---|
| Bulb mode with soft start | Programmable slew rate limits inrush current for 12 V incandescent loads (e.g., turn signals), preventing fuse nuisance trips and contact arcing. |
| LED mode with slew control | Configurable rise/fall times suppress EMI during PWM dimming of automotive LED arrays while maintaining flicker-free illumination. |
| Bridge mode with cross-current protection | Enables half-bridge motor drive (e.g., mirror positioning) with hardware-enforced dead-time to prevent shoot-through during direction reversal. |
| Configurable open-load detection | Detects disconnected loads in off-state for CH1–CH3 and CH4–CH6 - critical for fail-safe diagnostics in ASIL-B compliant body control modules. |
| Temperature warning output | Asserts flag at 150 °C (before shutdown at 175 °C), allowing MCU to reduce PWM duty cycle or disable adjacent channels preemptively. |
Applications
| Mirror Adjustment System | LED Headlamp Control |
|---|---|
Use Scenario: Precise bidirectional control of DC motors adjusting left/right mirror angle in response to CAN bus commands. IC Role / Device Role / Timing Role: L99MC6GJTR operates CH1+CH2 in complementary bridge mode with cross-current protection, while CH4–CH6 drive position feedback LEDs and status indicators. Use Value: Eliminates external H-bridge IC and discrete current-sense resistors; integrated diagnostics report motor stall or wiring faults to MCU within one SPI frame. |
Use Scenario: Driving multiple LED strings (low-beam, DRL, turn signal) with independent dimming and fault monitoring in front lighting module. IC Role / Device Role / Timing Role: CH1–CH3 configured as high-side drivers for LED anodes; CH4–CH6 as low-side PWM sinks; slew rate control prevents conducted EMI above 150 kHz. Use Value: Enables single-chip replacement of 6x discrete MOSFETs + gate drivers + protection diodes - reducing BOM count by 12+ components and PCB area by >35%. |
| Body Control Relay Driver | Seat Position Actuator |
Use Scenario: Replacing electromechanical relays for door lock actuators, window lift motors, and trunk release solenoids in centralized body controller. IC Role / Device Role / Timing Role: CH1–CH3 drive high-side relays (12 V coil); CH4–CH6 handle low-side grounding; IN/PWM pin directly controls CH2 for fast lock/unlock sequencing. Use Value: Achieves >100,000-cycle reliability vs. 50,000-cycle mechanical relays; standby current <5 µA extends battery life during vehicle sleep mode. |
Use Scenario: Controlling reversible DC motors moving seat fore/aft, recline, and lumbar support in premium automotive seating systems. IC Role / Device Role / Timing Role: CH1+CH2 form active half-bridge; CH3 provides braking path; CH4–CH6 monitor end-stop switches and drive status LEDs. Use Value: Hardware-level cross-current protection prevents destructive shoot-through during rapid direction changes - eliminating risk of MOSFET failure during aggressive seat movement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar configurable multi-channel driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BD37022FV-M | 5-channel, no self-configurable HS/LS; fixed 1.2 Ω RON; no IN/PWM pin; SPI only | Lacks bulb/LED mode tuning and direct PWM bypass - unsuitable for time-critical motor control or inrush-sensitive loads | Select only if system uses exclusively SPI-controlled low-power solenoids and requires lower cost, not performance parity |
| TLE9201SG | 4-channel, integrated current sense; 0.55 Ω RON; higher quiescent current (25 µA); no open-load detection in off-state | Superior current accuracy but missing key diagnostics - requires external circuitry for open-load verification in safety-critical nodes | Prefer when precise closed-loop current regulation is mandatory, and diagnostic coverage can be supplemented externally |
Compared with BD37022FV-M and TLE9201SG, the L99MC6GJTR uniquely combines six-channel flexibility, direct PWM control, programmable load modes, and comprehensive off-state diagnostics - making it the only option qualified for ASIL-B-compliant mirror and seat actuation where both functional safety and electrical robustness are required.
Availability
L99MC6GJTR is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting systems, and mirror/seat actuation requiring stable component supply across extended vehicle lifecycles and production ramp phases.
Supply support for L99MC6GJTR 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, sensors, and automotive-grade analog devices since 1987.
The L99MC6GJTR belongs to ST's L99 family of automotive smart power drivers, engineered specifically for replacing electromechanical relays and discrete FET solutions in body electronics - emphasizing integration, diagnostic completeness, and AEC-Q100 compliance.
FAQ
What is the maximum operating voltage on the VS pin?
The VS pin supports up to 28 V DC with transient tolerance to 40 V (per ISO 7637-2 Pulse 1/2/5a), enabling direct connection to automotive battery rails. Operation below 3 V (crank condition) is supported for all channels, though RON increases to 1.2 Ω at VVS = 3 V and Tj = 125 °C.
Can CH1–CH3 be used simultaneously as two high-side and one low-side driver?
Yes - each of CH1–CH3 is independently configurable via SPI register writes (Control Register 0/1) as high-side, low-side, or disabled. For example, CH1 and CH2 can be set as high-side (SRC → load, DRN → VS), while CH3 is set as low-side (DRN → load, SRC → GND), all active concurrently.
Does the L99MC6GJTR support daisy-chained SPI communication?
No - the L99MC6GJTR uses a standard 4-wire SPI interface (CSN, SCK, DI, DO) with no daisy-chain capability. Multiple devices require individual CSN lines controlled by the host MCU; DO is tri-state when CSN is high, enabling shared SCK/DI/DO buses with independent chip selects.
How is open-load detection performed in bridge mode?
In bridge mode (e.g., CH1+CH2), open-load detection is executed by measuring voltage at the floating node between the two outputs during off-state. If both outputs are off and the measured voltage deviates from expected mid-rail (VS/2), an open-load flag is asserted in Status Register 1 - confirmed in Example 3 (page 40 of datasheet DocID026835 Rev 3).
L99MC6GJTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 16-PowerLFSOP (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 6
- Ratio - Input:Output:
- 1:6
- Output Configuration:
- High Side or Low Side
- Output Type:
- N-Channel
- Interface:
- SPI
- Voltage - Load:
- 6V ~ 28V
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Current - Output (Max):
- 600mA
- Rds On (Typ):
- 700mOhm
- Input Type:
- Non-Inverting
- Features:
- PWM Input, Slew Rate Controlled
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Temperature
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerSSO-16
L99MC6GJTR FAQ
1.How can I place an order for L99MC6GJTR through Aetrix?
Please submit a Request for Quotation (RFQ) for L99MC6GJTR 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 L99MC6GJTR reliable?
The price and inventory of L99MC6GJTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L99MC6GJTR is usually 5 days.
3.What payment methods are accepted for L99MC6GJTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L99MC6GJTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L99MC6GJTR?
L99MC6GJTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L99MC6GJTR 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 L99MC6GJTR?
For technical support, including L99MC6GJTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L99MC6GJTR requirements.
6.How does Aetrix verify that L99MC6GJTR is sourced from the original manufacturer or authorized distributors?
All L99MC6GJTR 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 L99MC6GJTR meets industry standards.
7.What is the process for return or replacement of L99MC6GJTR?
All L99MC6GJTR units undergo pre-shipment inspection (PSI). If there is an issue with L99MC6GJTR, 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 L99MC6GJTR part is unused and in its original packaging.
Return procedure for L99MC6GJTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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