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Texas Instruments LMR36006FSC3RNXRQ1
- Part No.:
- LMR36006FSC3RNXRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 12-PowerVFQFN
- Datasheet:
-
LMR36006FSC3RNXRQ1.pdf
- Description:
- IC REG BUCK 3.3V 600MA 12VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,489
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Product details
Overview
LMR36006FSC3RNXRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering 0.6 A at fixed 3.3 V output, operating from 4.2 V to 60 V input, with 2.1 MHz switching frequency, spread-spectrum modulation, and FPWM mode support. It integrates high-side and low-side MOSFETs in a 2-mm × 3-mm HotRod™ VQFN-HR package for ADAS camera modules and body control units.
For engineers reviewing the LMR36006FSC3RNXRQ1 datasheet, LMR36006FSC3RNXRQ1 pinout, LMR36006FSC3RNXRQ1 application, or LMR36006FSC3RNXRQ1 equivalent, key selection considerations include its 3.3-V fixed output, ±1.5% reference tolerance, 26 µA quiescent current in PFM, CISPR25 Class 5 EMI compliance, and thermal shutdown at 170°C.
Technical Context
The LMR36006FSC3RNXRQ1 uses peak-current-mode control with internal loop compensation, enabling stable regulation across 4.2–60 V input while maintaining 3.3 V ±1.5% output accuracy. Its FPWM operation ensures constant 2.1 MHz switching under all load conditions, eliminating frequency variation-induced noise.
It features integrated power-good (PG) flag with 80–200 µs deglitch delay, precision enable thresholds (1.157–1.3 V), and dual current-limit protection: cycle-by-cycle high-side limit (0.8–1.2 A) and hiccup-mode short-circuit response triggered below 0.4 V FB voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2 V to 60 V - supports wide automotive battery transients up to 66 V absolute max. |
| Output Voltage | Fixed 3.3 V (±1.5%) - eliminates external feedback resistors; enables direct powering of MCU I/O rails. |
| Switching Frequency | 2.1 MHz (±7.1%) - allows use of small 1-µH inductors and reduces solution footprint. |
| Quiescent Current | 26 µA typical - sustains ultra-low power consumption in vehicle always-on domains. |
| Efficiency | 94% at 12 VIN/5 VOUT/0.6 A/400 kHz - confirms high conversion efficiency even at mid-load with optimized FET RDS(on). |
| EMI Performance | CISPR25 Class 5 compliant - meets stringent automotive radiated emissions requirements without added filtering. |
| Junction Temp Range | –40°C to +150°C - qualified for under-hood and ADAS module placement with full functional safety support. |
Pinout & Package
LMR36006FSC3RNXRQ1 is housed in a 12-pin VQFN-HR (RNX) package measuring 2.00 mm × 3.00 mm with wettable flanks for automated optical inspection. The HotRod™ flip-chip construction minimizes parasitic inductance and switch-node ringing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | PGND | Power ground return path for high-current loops; must be connected to AGND and CIN with short, wide traces. |
| 2, 10 | VIN | Main input supply rail; accepts 4.2–60 V; requires local 10-µF ceramic input capacitor. |
| 3 | NC | No internal connection; used on PCB to simplify CBOOT-to-SW routing per TI layout guidance. |
| 4 | BOOT | Bootstrap supply for high-side driver; requires 100-nF ceramic capacitor to SW pin. |
| 5 | VCC | Internal 5-V LDO output; powers control circuitry; decoupled with 1-µF capacitor to AGND. |
| 6 | AGND | Analog ground reference for FB, EN, PG; separate from PGND but tied at single point on PCB. |
| 7 | FB | Feedback input; internally connected to 3.3-V reference; not externally configurable for this fixed-output variant. |
| 8 | PG | Open-drain power-good flag; asserts high after soft-start when VOUT reaches 95% of target; requires pull-up resistor. |
| 9 | EN | Enable input with precision thresholds (1.157–1.3 V); supports direct VIN connection or external UVLO divider. |
| 12 | SW | Switch node connecting to power inductor; carries high di/dt; routed with minimal loop area to reduce EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety-Capable Documentation | TI provides FIT rate data, failure mode analysis, and safety manual to support ISO 26262 ASIL-B system integration. |
| HotRod™ Package with Wettable Flanks | Enables reliable solder-joint inspection and improves thermal performance (RθJB = 23.3°C/W) in compact layouts. |
| Spread Spectrum + Parallel Input Path | Reduces peak EMI by >10 dB and minimizes parasitic inductance for robust CISPR25 Class 5 compliance. |
| Integrated Power-Good Flag with Filtering | Eliminates need for external supervisor IC; built-in 80–200 µs deglitch prevents false resets during transients. |
| FPWM Mode at 2.1 MHz | Guarantees constant switching frequency across full load range-critical for noise-sensitive ADAS imaging systems. |
Applications
| ADAS Camera Module | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers image sensor, ISP, and interface logic in rear-view or surround-view cameras exposed to engine bay temperature extremes. IC Role / Device Role / Timing Role: Primary 3.3-V power rail regulator with fast transient response and low-noise FPWM operation to prevent image artifacts. Use Value: Delivers stable 3.3 V at 0.6 A with <1.5% output tolerance and 94% efficiency, meeting ASIL-B power integrity requirements. | Use Scenario: Supplies microcontroller, CAN transceiver, and LED drivers in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Compact, high-reliability buck converter supporting cold-crank (4.2 V) to load-dump (60 V) conditions. Use Value: AEC-Q100 Grade 1 qualification and –40°C to +150°C junction operation ensure uninterrupted function in harsh under-dash environments. |
| Infotainment Display Unit | Automotive Telematics Control Unit (TCU) |
Use Scenario: Generates 3.3-V rail for display controller, touch processor, and backlight driver in center-stack displays. IC Role / Device Role / Timing Role: Fixed-output DC/DC regulator with integrated PG flag for coordinated system power sequencing. Use Value: 26 µA quiescent current extends battery life in accessory-off state; spread spectrum reduces EMI coupling into sensitive video lines. | Use Scenario: Powers LTE/V2X modem, GNSS receiver, and secure MCU in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: High-input-voltage buck converter with thermal shutdown (170°C) and hiccup-mode short-circuit protection. Use Value: Withstands 66-V transients and maintains regulation during cranking; PG signal enables safe firmware reset on power fault. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR36006FSCQRNXRQ1 | Adjustable output (via FB divider); same 2.1-MHz FPWM, spread spectrum, and package. | Requires external resistors for VOUT setting; less suitable for space-constrained 3.3-V-only designs. | Select when flexible output voltage or future design reuse across multiple rails is required. |
| LMR36015FSC3RNXRQ1 | Higher 1.5-A output current; identical 3.3-V fixed option, 2.1-MHz FPWM, and HotRod™ VQFN-HR package. | Pin-compatible upgrade path; larger current headroom for future BCM feature expansion. | Choose when higher load margin or scalability to 1.5 A is needed without layout change. |
Compared with LMR36006FSC3RNXRQ1, the adjustable LMR36006FSCQRNXRQ1 offers design flexibility at the cost of two external resistors, while LMR36015FSC3RNXRQ1 provides immediate 2.5× current headroom in the same footprint-enabling forward-compatible power delivery for evolving automotive ECUs.
Availability
LMR36006FSC3RNXRQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, body control modules, infotainment displays, and telematics control units requiring stable component supply across automotive production lifecycles.
Supply support for LMR36006FSC3RNXRQ1 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 specializing in analog, embedded processing, and automotive-grade power management solutions.
The LMR36006-Q1 product line delivers ultra-small, high-efficiency synchronous buck converters engineered specifically for AEC-Q100-compliant automotive subsystems including ADAS, body electronics, and infotainment.
FAQ
What is the output voltage configuration of the LMR36006FSC3RNXRQ1?
The LMR36006FSC3RNXRQ1 is factory-configured with a fixed 3.3-V output. Unlike adjustable variants, it does not require external feedback resistors-its FB pin connects internally to a precision 1-V reference and scaling network to deliver 3.3 V ±1.5% over temperature and load. This simplifies design and reduces bill-of-materials count for dedicated 3.3-V rail applications.
Does the LMR36006FSC3RNXRQ1 support functional safety compliance?
Yes, the LMR36006FSC3RNXRQ1 is functional safety-capable. Texas Instruments provides a dedicated safety manual, FIT rate data, and failure mode analysis documentation to support ISO 26262 ASIL-B system-level development. The device includes diagnostic features such as power-good flag with deglitching, thermal shutdown with hysteresis, and comprehensive current-limit protection-all verified under AEC-Q100 Grade 1 conditions.
What package type and dimensions does the LMR36006FSC3RNXRQ1 use?
The LMR36006FSC3RNXRQ1 uses the VQFN-HR (RNX) package: a 12-pin, 2.00 mm × 3.00 mm HotRod™ flip-chip construction with wettable flanks. This package minimizes parasitic inductance, improves thermal dissipation (RθJB = 23.3°C/W), and supports automated optical inspection. Its compact size enables ultra-dense power solutions ideal for space-constrained automotive modules.
How does the LMR36006FSC3RNXRQ1 handle short-circuit conditions?
The LMR36006FSC3RNXRQ1 responds to short circuits using hiccup-mode protection: when FB voltage drops below ~0.4 V, it halts switching for 94 ms, then attempts soft-start recovery. If the fault persists, it repeats the cycle-limiting average power dissipation and junction temperature rise. This behavior, combined with cycle-by-cycle high-side current limiting (0.8–1.2 A), protects both the IC and external components during sustained output faults.
Is the LMR36006FSC3RNXRQ1 compatible with WEBENCH® Power Designer?
Yes, the LMR36006FSC3RNXRQ1 is fully supported in TI's WEBENCH® Power Designer tool. Engineers can generate complete schematic and BOM, simulate efficiency and thermal performance, optimize component selection (inductor, input/output capacitors), and validate loop stability-all using the exact LMR36006FSC3RNXRQ1 model with its fixed 3.3-V output, 2.1-MHz FPWM, and integrated compensation.
LMR36006FSC3RNXRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.2V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-VQFN-HR (3x2)
LMR36006FSC3RNXRQ1 FAQ
1.How can I place an order for LMR36006FSC3RNXRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR36006FSC3RNXRQ1 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 LMR36006FSC3RNXRQ1 reliable?
The price and inventory of LMR36006FSC3RNXRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR36006FSC3RNXRQ1 is usually 5 days.
3.What payment methods are accepted for LMR36006FSC3RNXRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR36006FSC3RNXRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR36006FSC3RNXRQ1?
LMR36006FSC3RNXRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR36006FSC3RNXRQ1 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 LMR36006FSC3RNXRQ1?
For technical support, including LMR36006FSC3RNXRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR36006FSC3RNXRQ1 requirements.
6.How does Aetrix verify that LMR36006FSC3RNXRQ1 is sourced from the original manufacturer or authorized distributors?
All LMR36006FSC3RNXRQ1 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 LMR36006FSC3RNXRQ1 meets industry standards.
7.What is the process for return or replacement of LMR36006FSC3RNXRQ1?
All LMR36006FSC3RNXRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMR36006FSC3RNXRQ1, 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 LMR36006FSC3RNXRQ1 part is unused and in its original packaging.
Return procedure for LMR36006FSC3RNXRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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