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Texas Instruments LMR36006FSCQRNXTQ1
- Part No.:
- LMR36006FSCQRNXTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 12-PowerVFQFN
- Datasheet:
-
LMR36006FSCQRNXTQ1.pdf
- Description:
- IC REG BUCK ADJ 600MA 12VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:374
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Product details
Overview
LMR36006FSCQRNXTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 0.6 A across 4.2 V–60 V input, featuring 2.1 MHz fixed switching frequency, spread-spectrum modulation, and FPWM operation mode. It integrates high-side and low-side MOSFETs in a 2 mm × 3 mm HotRod™ VQFN-HR package and supports adjustable output voltage with ±1.5% reference tolerance.
For engineers reviewing the LMR36006FSCQRNXTQ1 datasheet, LMR36006FSCQRNXTQ1 pinout, LMR36006FSCQRNXTQ1 application, or LMR36006FSCQRNXTQ1 equivalent, key selection considerations include its CISPR25 Class 5 EMI compliance, 26 µA quiescent current in PFM, thermal shutdown at 170°C, and power-good flag with built-in deglitching for reliable system monitoring in ADAS and body control modules.
Technical Context
The LMR36006FSCQRNXTQ1 uses peak-current-mode control with internal loop compensation, enabling stable regulation from 20 VIN to 5 VOUT at 2.1 MHz without external compensation components. Its FPWM mode ensures constant-frequency operation across full load range, eliminating audible noise and simplifying EMI filtering.
It implements dual current-limit protection: cycle-by-cycle high-side peak limit (0.8–1.2 A) and valley-based low-side limit (0.6–0.95 A), plus hiccup-mode short-circuit response with 94-ms off-time. The integrated 5-V VCC LDO powers internal circuitry and supports logic-level PG output, while precision enable thresholds allow direct VIN connection or programmable UVLO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2 V to 60 V - supports wide automotive battery transients including cold-crank (4.2 V) and load-dump (66 V absolute max) |
| Output Current | 0.6 A continuous - sufficient for powering camera ISPs, microcontrollers, and sensor interfaces in compact modules |
| Switching Frequency | 2.1 MHz (±10%) - enables use of small 1-µH inductors and reduces solution footprint vs. lower-frequency alternatives |
| Quiescent Current | 26 µA typical (PFM) - extends battery life in always-on vehicle systems such as parking cameras |
| Reference Voltage Tolerance | ±1.5% - ensures tight output regulation accuracy over temperature and line/load variations |
| Efficiency @ 12 VIN/5 VOUT | 94% at 0.6 A - minimizes thermal stress in sealed enclosures like ADAS camera housings |
| EMI Performance | CISPR25 Class 5 compliant - meets stringent automotive radiated emissions requirements without added shielding |
Pinout & Package
The LMR36006FSCQRNXTQ1 is housed in a 12-pin VQFN-HR (RNX) package measuring 2.00 mm × 3.00 mm with wettable flanks for automated optical inspection. Thermal resistance is RθJA = 72.5°C/W (JEDEC High-K board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | PGND | Power ground return path for high-current switch node; must be tied to AGND and CIN with low-inductance layout |
| 2, 10 | VIN | Main input supply rail; connects directly to bulk input capacitor with minimal trace length and width |
| 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 and can source PG pull-up; bypass with 1-µF capacitor |
| 6 | AGND | Analog ground reference for FB, EN, and internal references; isolated from PGND at single-point star ground |
| 7 | FB | Feedback input for output voltage regulation; connects to resistor divider or fixed 3.3-V output node |
| 8 | PG | Open-drain power-good flag; asserts high after soft-start when VOUT reaches 93–107% of target; requires external pull-up |
| 9 | EN | Enable input with precision thresholds (1.157–1.3 V turn-on); supports direct VIN tie or external UVLO divider |
| 12 | SW | Switch node connecting to power inductor; high dv/dt node requiring minimized loop area and guard ring |
Key Features
| Feature | Design Value |
|---|---|
| HotRod™ package with wettable flanks | Reduces parasitic inductance by >50% vs. standard QFN, suppressing switch-node ringing and easing CISPR25 Class 5 compliance |
| Spread-spectrum modulation (±4%) | Lowers peak EMI emissions by spreading energy across 16-kHz triangular band, reducing filter component count and cost |
| FPWM operation mode | Maintains fixed 2.1-MHz switching across entire 0–0.6-A load range, eliminating frequency variation-induced noise and ripple concerns |
| Integrated power-good flag with deglitching | Provides system-level fault detection with 80–200-µs built-in delay, eliminating need for external supervisor IC or RC timing network |
| Thermal shutdown with hysteresis | Shuts down at 170°C and recovers at 158°C, preventing thermal runaway during sustained overload or poor heatsinking |
Applications
| ADAS Camera Module | Body Control Module (BCM) |
|---|---|
Use Scenario: Powering image signal processor (ISP), CMOS sensor, and interface logic in rear-view or surround-view camera units mounted in exterior housings. IC Role / Device Role / Timing Role: Primary 5-V or 3.3-V point-of-load regulator converting 12-V battery to clean, low-noise rail with fast transient response to sensor burst modes. Use Value: 94% efficiency at 0.6 A minimizes heat buildup in thermally constrained plastic housings; CISPR25 Class 5 compliance avoids interference with nearby radar or V2X receivers. | Use Scenario: Supplying microcontroller, CAN transceiver, LED drivers, and window/mirror motor control logic in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Main 3.3-V or adjustable rail generator supporting multiple sub-systems with robust start-up sequencing via precision EN threshold and PG flag. Use Value: 26-µA quiescent current extends sleep-mode battery life; thermal shutdown and hiccup protection ensure reliability during intermittent short circuits in wiring harnesses. |
| Infotainment Display Backlight | Automotive Telematics Unit |
Use Scenario: Generating bias voltage for LED backlight drivers in digital instrument clusters or center-stack displays exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Adjustable-output buck converter operating from 7–16-V nominal battery with ±1.5% reference accuracy to maintain consistent brightness across temperature. Use Value: Junction temperature rating of –40°C to +150°C ensures operation in under-hood or dashboard locations; 2.1-MHz switching allows ultra-compact 1-µH inductor selection. | Use Scenario: Providing regulated 3.3-V or 5-V rails for cellular modem, GNSS receiver, and secure MCU in connected vehicle gateways. IC Role / Device Role / Timing Role: Secondary power stage downstream of primary DC/DC, delivering low-noise, EMI-clean power with functional safety documentation support. Use Value: Functional safety-capable design aids ISO 26262 ASIL-B system development; spread spectrum and HotRod packaging reduce need for ferrite beads or metal shields in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR36015FSCQRNXRQ1 | Same pinout, 1.5-A output, identical 2.1-MHz FPWM and spread-spectrum features | Higher current capability suits multi-rail systems or future-proofing with margin | Select when >0.6-A load headroom is required without changing PCB layout |
| LMR33620FSCQRNXRQ1 | 36-V max input, 2-A output, same 2.1-MHz FPWM but no spread spectrum; smaller RDS(on) MOSFETs | Better suited for 24-V commercial vehicles or industrial control where 60-V rating is unnecessary | Choose for cost-sensitive 24-V platforms needing higher current but lower EMI requirements |
Compared with LMR36015FSCQRNXRQ1 and LMR33620FSCQRNXRQ1, the LMR36006FSCQRNXTQ1 offers optimal balance of ultra-small footprint, 60-V automotive input resilience, and certified EMI performance-making it ideal for space- and noise-constrained ADAS edge nodes where 0.6-A output suffices.
Availability
LMR36006FSCQRNXTQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, body control modules, and infotainment displays requiring stable component supply across automotive production lifecycles.
Supply support for LMR36006FSCQRNXTQ1 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 and embedded processing technologies, with decades of automotive qualification expertise and broad power management portfolio.
The LMR36006FSCQRNXTQ1 belongs to TI's LMR360xx-Q1 family of AEC-Q100 Grade 1 buck converters designed specifically for space-constrained, EMI-sensitive automotive subsystems including vision, lighting, and domain controllers.
FAQ
What is the maximum input voltage rating for the LMR36006FSCQRNXTQ1?
The LMR36006FSCQRNXTQ1 has an absolute maximum input voltage rating of 66 V, with recommended operating range from 4.2 V to 60 V. This accommodates automotive battery transients such as cold-crank (down to 4.2 V) and load-dump events (up to 60 V nominal, 66 V absolute). Operation beyond 60 V is not recommended for sustained use, though the device survives brief transients per AEC-Q100 stress testing protocols.
Does the LMR36006FSCQRNXTQ1 support fixed-output voltage configurations?
The LMR36006FSCQRNXTQ1 is configured for adjustable output voltage only. However, TI offers the pin-compatible LMR36006FSC3RNXTQ1 variant with factory-trimmed 3.3-V fixed output. Both share identical 2.1-MHz FPWM operation, spread spectrum, and thermal specs-but the LMR36006FSCQRNXTQ1 requires external feedback resistors to set VOUT, offering design flexibility for non-standard rail voltages.
How does the power-good (PG) flag behave during startup and fault conditions for the LMR36006FSCQRNXTQ1?
The LMR36006FSCQRNXTQ1 PG flag asserts high after ~4 ms from EN assertion, once VOUT reaches 93–107% of target and remains stable for ≥80 µs. It goes low during thermal shutdown, current-limit hiccup, or EN deactivation. When EN is pulled low, PG stays valid down to 2 VIN; if unused, PG must be grounded-not left floating-to prevent undefined behavior.
What thermal metrics apply to the LMR36006FSCQRNXTQ1 in its VQFN-HR package?
The LMR36006FSCQRNXTQ1 in the 2 mm × 3 mm VQFN-HR (RNX) package has RθJA = 72.5°C/W (JEDEC High-K board), RθJC(top) = 35.9°C/W, and RθJB = 23.3°C/W. Its thermal shutdown activates at 170°C junction temperature and recovers at 158°C. These values assume proper PCB copper pour (≥4 cm² thermal pad connected to internal ground plane) and are validated per JEDEC JESD51 standards.
Can the LMR36006FSCQRNXTQ1 operate in forced PWM (FPWM) mode across all load conditions?
Yes-the LMR36006FSCQRNXTQ1 operates exclusively in FPWM mode, maintaining constant 2.1-MHz switching from zero load to full 0.6-A output. Unlike auto-mode buck converters, it does not transition to PFM at light loads, ensuring predictable EMI profile and eliminating low-frequency output ripple. This makes it ideal for noise-sensitive applications like camera power where spectral content must remain above 2 MHz.
LMR36006FSCQRNXTQ1 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.2V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 60V
- 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)
LMR36006FSCQRNXTQ1 FAQ
1.How can I place an order for LMR36006FSCQRNXTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR36006FSCQRNXTQ1 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 LMR36006FSCQRNXTQ1 reliable?
The price and inventory of LMR36006FSCQRNXTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR36006FSCQRNXTQ1 is usually 5 days.
3.What payment methods are accepted for LMR36006FSCQRNXTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR36006FSCQRNXTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR36006FSCQRNXTQ1?
LMR36006FSCQRNXTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR36006FSCQRNXTQ1 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 LMR36006FSCQRNXTQ1?
For technical support, including LMR36006FSCQRNXTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR36006FSCQRNXTQ1 requirements.
6.How does Aetrix verify that LMR36006FSCQRNXTQ1 is sourced from the original manufacturer or authorized distributors?
All LMR36006FSCQRNXTQ1 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 LMR36006FSCQRNXTQ1 meets industry standards.
7.What is the process for return or replacement of LMR36006FSCQRNXTQ1?
All LMR36006FSCQRNXTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMR36006FSCQRNXTQ1, 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 LMR36006FSCQRNXTQ1 part is unused and in its original packaging.
Return procedure for LMR36006FSCQRNXTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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