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Texas Instruments LM9061QDRQ1
- Part No.:
- LM9061QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM9061QDRQ1.pdf
- Description:
- IC GATE DRVR HIGH-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,150
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Product details
Overview
LM9061QDRQ1 from Texas Instruments is an AEC-Q100 qualified high-side protection controller for automotive N-channel MOSFET gate drive, featuring lossless overcurrent protection via VDS monitoring, 60-V supply transient tolerance, and programmable latch-off delay. It operates from 7 V to 26 V and delivers up to VCC + 15 V gate drive for robust high-side switching in engine control units and solenoid drivers.
For engineers reviewing the LM9061QDRQ1 datasheet, LM9061QDRQ1 pinout, LM9061QDRQ1 application, or LM9061QDRQ1 equivalent, key selection criteria include its lossless current sensing architecture, 110-µA normal turnoff sink, 10-µA latched protection sink, programmable delay timing, and SOIC-8 automotive-grade packaging with −40°C to +125°C junction temperature rating.
Technical Context
The LM9061QDRQ1 integrates a 300-kHz charge pump to generate gate voltage exceeding VCC, clamped at 15 V to protect MOSFET gate oxide. Its protection comparator continuously monitors VDS across the external MOSFET using externally set threshold voltage via RTHRESHOLD and IREF (80 µA typical).
Upon overcurrent detection, it initiates a programmable delay (8–18 ms with 0.022 µF capacitor), then transitions to 10-µA latched gate discharge for gradual turnoff-critical for suppressing inductive flyback transients in valve and motor drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 7 V to 26 V - supports 12 V/24 V automotive battery systems with 60 V transient tolerance |
| Gate Drive Output | VCC + 7 V to VCC + 15 V - enables full enhancement of high-threshold N-channel MOSFETs without external boost |
| Protection Threshold | Externally programmable via RTHRESHOLD - sets precise VDS(MAX) limit without sense resistor power loss |
| Turnoff Sink Current | 110 µA (normal), 10 µA (latched) - ensures controlled MOSFET discharge to suppress inductive voltage spikes |
| Delay Timer Range | 8 ms to 18 ms (with 0.022 µF) - configurable blanking time before protection latch activation |
| ESD Rating | HBM ±2000 V, CDM ±1000 V - meets AEC-Q100 Level 2 and C4B for automotive manufacturing environments |
| Junction Temp Range | −40°C to +125°C - qualified for under-hood ECU and TCU deployment |
Pinout & Package
LM9061QDRQ1 is housed in an SOIC-8 package (4.9 mm × 3.91 mm body size) with standard gull-wing leads, optimized for automotive PCB thermal management and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Sense (Pin 1) | Inverting input of protection comparator | Connected to MOSFET source; monitors VS to detect VDS rise during overcurrent |
| Threshold (Pin 2) | Noninverting input of protection comparator | Connected to MOSFET drain; sets VDS(MAX) trip point via RTHRESHOLD |
| Ground (Pin 3) | Power and signal reference | Common return for internal circuitry and external bias networks |
| Output (Pin 4) | High-side gate driver output | Delivers charge-pump boosted voltage to MOSFET gate; clamped at 15 V max VGS |
| VCC (Pin 5) | Main supply input | Accepts 7–26 V; powers internal logic, charge pump, and gate drive stages |
| IREF (Pin 6) | Reference current output | Sinks 75–88 µA to ground via RREF; sets threshold current and stabilizes charge pump frequency |
| On/Off (Pin 7) | CMOS-compatible enable input | Logic-high (≥3.5 V) enables gate drive; logic-low (≤1.5 V) disables with 110-µA sink |
| Delay (Pin 8) | Programmable delay timer node | Capacitor-to-ground sets latch-off delay interval; discharged at 2–10 mA during fault |
Key Features
| Feature | Design Value |
|---|---|
| Lossless Overcurrent Protection | Eliminates series sense resistor - reduces BOM cost and system power loss while enabling precise VDS-based MOSFET thermal protection |
| Gradual Latch-OFF Turnoff | 10-µA gate discharge during fault limits di/dt - suppresses negative flyback transients in solenoids, valves, and DC motors |
| Programmable Fault Delay | Adjustable 8–18 ms blanking window via external capacitor - prevents nuisance tripping during inrush or transient load events |
| 60-V Supply Transient Withstand | Robust input stage survives ISO 7637-2 Pulse 1/2/5a - suitable for direct connection to automotive battery rails |
| AEC-Q100 Qualified | Validated for automotive use with HBM ±2000 V, CDM ±1000 V, and −40°C to +125°C operation - meets functional safety readiness requirements |
Applications
| Transmission Control Unit (TCU) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Driving high-current shift solenoids and pressure control valves in automatic transmissions. IC Role / Device Role / Timing Role: High-side gate driver and real-time VDS-based overcurrent protector for N-channel power MOSFETs controlling hydraulic actuators. Use Value: Prevents MOSFET failure during solenoid short-circuit events while maintaining fast ON/OFF response for precise hydraulic timing. | Use Scenario: Controlling fuel injectors, ignition coils, and throttle actuators in gasoline and diesel engines. IC Role / Device Role / Timing Role: Fault-tolerant high-side switch supervisor that monitors MOSFET conduction state and enforces safe shutdown on overtemperature or overcurrent. Use Value: Enables lossless current limiting without added sense resistor losses - critical for meeting stringent ECU power budget constraints. |
| Valve & Relay Driver | Lamp & LED Driver |
Use Scenario: Managing 12 V/24 V industrial pneumatic/hydraulic valves and high-power relays in commercial vehicle chassis systems. IC Role / Device Role / Timing Role: Programmable high-side protection controller interfacing CMOS logic to external power MOSFETs driving inductive loads. Use Value: Gradual 10-µA turnoff minimizes contact arcing and extends relay life; 60-V transient rating ensures reliability in noisy chassis harnesses. | Use Scenario: Powering high-brightness headlamps, fog lamps, and DRL modules in modern automotive lighting systems. IC Role / Device Role / Timing Role: High-side switch with integrated overvoltage (VCC > 30 V) shut-off and soft turnoff to reduce EMI during lamp dimming or fault conditions. Use Value: Eliminates need for external TVS and current-sense components - simplifies layout and improves thermal performance in space-constrained lamp housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side protection controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS4H160-Q1 | Integrated 40-mΩ high-side FET; no external MOSFET required; supports 160-mA continuous load | Built-in FET limits max current and voltage rating (40 V); not suitable for >10 A or >60 V transient environments | Select when board space and BOM count are prioritized over flexibility in MOSFET selection and high-voltage robustness |
| LM5069MMX-2/NOPB | Hot-swap controller with adjustable current limit and linear foldback; requires external sense resistor | Designed for 3–16 V supply rails; lacks 60-V transient rating and automotive qualification | Prefer for non-automotive 12 V systems where precise current regulation (not VDS-based lossless protection) is primary requirement |
Compared with LM9061QDRQ1, TPS4H160-Q1 trades external MOSFET flexibility for integration and reduced component count, while LM5069MMX-2/NOPB offers analog current limiting but lacks automotive qualification and high-voltage resilience - making LM9061QDRQ1 uniquely suited for demanding under-hood high-current switching with lossless protection.
Availability
LM9061QDRQ1 is available at Aetrix Electronics and suitable for transmission control units, engine control units, and solenoid driver modules requiring stable component supply across automotive production lifecycles.
Supply support for LM9061QDRQ1 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
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for automotive, industrial, and consumer applications.
The LM9061QDRQ1 belongs to TI's automotive high-side protection controller product line, engineered specifically for robust, lossless overcurrent protection in demanding under-hood environments such as ECUs and TCUs.
FAQ
What is the maximum supply voltage transient the LM9061QDRQ1 can withstand?
The LM9061QDRQ1 is rated to withstand 60-V supply transients per its absolute maximum ratings, making it suitable for direct connection to automotive battery rails subject to ISO 7637-2 Pulse 1, 2, and 5a events. This rating is validated under AEC-Q100 stress testing and does not require external TVS diodes for basic transient suppression in most chassis applications.
How does the LM9061QDRQ1 achieve lossless overcurrent protection without a sense resistor?
The LM9061QDRQ1 achieves lossless overcurrent protection by continuously monitoring the voltage drop (VDS) across the external N-channel MOSFET using its Sense and Threshold pins. When VDS exceeds a user-programmed threshold - set via RTHRESHOLD and IREF - the device latches OFF the gate drive. This eliminates power loss and BOM cost associated with traditional inline current-sense resistors.
What is the purpose of the Delay pin (Pin 8) on the LM9061QDRQ1?
The Delay pin (Pin 8) on the LM9061QDRQ1 accepts an external capacitor to ground that sets the time interval between overcurrent detection and latched gate turnoff. With a 0.022 µF capacitor, the delay ranges from 8 ms to 18 ms, preventing false triggering during inrush currents or brief load transients while ensuring timely shutdown during sustained faults.
Can the LM9061QDRQ1 drive multiple parallel MOSFETs?
Yes, the LM9061QDRQ1 is explicitly designed to drive multiple parallel-connected N-channel MOSFETs for very high-current applications. Its charge-pump gate driver delivers sufficient peak current (up to 30 mA during turn-on) and sustained gate voltage (VCC + 15 V) to fully enhance paralleled devices, enabling scalable current handling beyond 100 A with appropriate thermal design.
What is the function of the IREF pin (Pin 6) on the LM9061QDRQ1?
The IREF pin (Pin 6) on the LM9061QDRQ1 sinks a precision reference current of 75–88 µA to ground through an external resistor (typically 15.4 kΩ). This current sets both the threshold voltage for the protection comparator and stabilizes the internal charge pump switching frequency at ~300 kHz, ensuring consistent gate drive and protection timing across temperature and supply variations.
LM9061QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- High-Side
- Channel Type:
- Single
- Number of Drivers:
- 1
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 7V ~ 26V
- Logic Voltage - VIL, VIH:
- 1.5V, 3.5V
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM9061QDRQ1 FAQ
1.How can I place an order for LM9061QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM9061QDRQ1 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 LM9061QDRQ1 reliable?
The price and inventory of LM9061QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM9061QDRQ1 is usually 5 days.
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Note: Certain payment methods may incur a processing fee.
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LM9061QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM9061QDRQ1 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 LM9061QDRQ1?
For technical support, including LM9061QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM9061QDRQ1 requirements.
6.How does Aetrix verify that LM9061QDRQ1 is sourced from the original manufacturer or authorized distributors?
All LM9061QDRQ1 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 LM9061QDRQ1 meets industry standards.
7.What is the process for return or replacement of LM9061QDRQ1?
All LM9061QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM9061QDRQ1, 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 LM9061QDRQ1 part is unused and in its original packaging.
Return procedure for LM9061QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM9061QDRQ1 Tags
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