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Texas Instruments LMR36015FSCQRNXTQ1
- Part No.:
- LMR36015FSCQRNXTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 12-PowerVFQFN
- Datasheet:
-
LMR36015FSCQRNXTQ1.pdf
- Description:
- IC REG BUCK ADJ 1.5A 12VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:262
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Product details
Overview
LMR36015FSCQRNXTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade synchronous step-down DC/DC converter delivering up to 1.5 A output current across a 4.2 V to 60 V input range, featuring 2.1 MHz fixed switching frequency, spread-spectrum modulation, and FPWM operation - deployed in ADAS camera modules for compact, low-EMI power rail generation.
For engineers reviewing the LMR36015FSCQRNXTQ1 datasheet, LMR36015FSCQRNXTQ1 pinout, LMR36015FSCQRNXTQ1 application, or LMR36015FSCQRNXTQ1 equivalent, key selection considerations include its HotRod™ VQFN-HR (12-pin, 2.0 mm × 3.0 mm) package, ±1.5% reference voltage tolerance, 26 µA quiescent current in PFM mode, and integrated power-good flag with 80–200 µs deglitch delay.
Technical Context
The LMR36015FSCQRNXTQ1 uses peak-current-mode control with internal loop compensation, enabling stable regulation without external compensation components. Its FPWM mode ensures constant 2.1 MHz switching across all load conditions, eliminating frequency variation-induced EMI peaks.
Integrated high-side (225–435 mΩ RDS(on)) and low-side (150–280 mΩ RDS(on)) MOSFETs support efficient 1.5-A operation, while the HotRod™ package minimizes switch-node ringing and parasitic inductance via flip-chip construction and parallel input paths.
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 | 1.5 A continuous - sufficient for powering image sensors, SerDes, and MCU cores in camera modules. |
| Switching Frequency | 2.1 MHz (±7.1%) - enables use of small 1–2.2 µH inductors and avoids AM radio band interference. |
| Quiescent Current | 26 µA typical - sustains ultra-low power consumption during vehicle sleep modes without compromising wake-up response. |
| Reference Voltage | 1.0 V ±1.5% - sets precise feedback threshold for adjustable output configurations with minimal drift over –40°C to +125°C. |
| Power-Good Delay | 80–200 µs - filters transient output excursions to prevent false system resets during load steps or line transients. |
| Thermal Shutdown | 170°C shutdown / 158°C recovery - provides robust junction temperature protection in sealed automotive enclosures. |
| EMI Compliance | CISPR 25 Class 5 - meets stringent automotive radiated emissions requirements without added shielding or filtering. |
Pinout & Package
LMR36015FSCQRNXTQ1 is housed in a 12-pin VQFN-HR package (2.0 mm × 3.0 mm, wettable flanks), optimized for thermal performance (RθJA = 72.5°C/W) and low-inductance layout in space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 2, 10) | Primary input power supply | Accepts 4.2–60 V; requires short, wide traces to CIN to minimize input loop inductance and ripple. |
| SW (Pin 12) | Switch node | Connects directly to power inductor; critical path for EMI control - routed with minimal area and adjacent to PGND pour. |
| BOOT (Pin 4) | High-side gate driver supply | Requires 100-nF ceramic capacitor to SW; bootstrapping enables efficient high-side MOSFET drive without external charge pump. |
| FB (Pin 7) | Feedback input | Senses output voltage divider ratio; 1.0 V reference enables precise adjustable VOUT or fixed 3.3 V configuration. |
| PG (Pin 8) | Open-drain power-good flag | Signals valid regulation after soft-start; requires external pull-up; asserts low on fault, startup, or EN deactivation. |
| EN (Pin 9) | Enable control input | Logic-level enable with precision thresholds (1.157–1.3 V turn-on); supports direct VIN connection or external UVLO divider. |
| AGND (Pin 6) | Analog ground reference | Ground reference for FB, PG, EN, and internal references; must be star-connected to PGND near device. |
| PGND (Pins 1, 11) | Power ground return | Low-impedance return path for VIN, SW, and CIN; tied to AGND at single point to avoid noise coupling. |
| VCC (Pin 5) | Internal 5-V LDO output | Supplies internal circuitry; not for external loads; requires 1-µF decoupling to AGND/PGND. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; used on PCB to simplify CBOOT-to-SW routing per TI layout guidance. |
Key Features
| Feature | Design Value |
|---|---|
| HotRod™ flip-chip packaging | Reduces switch-node ringing and radiated EMI by minimizing bond-wire inductance - verified CISPR 25 Class 5 compliance. |
| Spread-spectrum modulation | ±4% frequency dithering at 16 kHz repetition rate lowers peak EMI by >10 dB without affecting regulation stability. |
| FPWM operation | Maintains fixed 2.1 MHz switching across full 0–1.5 A load range - eliminates audible noise and simplifies EMI filter design. |
| Integrated power-good flag | Provides system-level reset signaling with built-in 80–200 µs deglitching - eliminates need for external supervisor IC. |
| Auto-recovery hiccup protection | Enters 94-ms shutdown cycle on hard short, limiting average power dissipation and junction temperature rise during fault. |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage data - supports ISO 26262 ASIL-B system integration. |
Applications
| ADAS Camera Module Power Supply | Body Control Module (BCM) Core Rail |
|---|---|
Use Scenario: Powers 5-MP image sensor, ISP, and serializer in rear-view or surround-view camera housing exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Primary 3.3-V or adjustable buck regulator supplying clean, low-noise power with fast transient response to sensor pixel clock demands. Use Value: 2.1 MHz switching enables <2 mm² solution size; spread spectrum and HotRod™ packaging meet OEM EMI limits without ferrite beads or shields. |
Use Scenario: Generates 5-V or 3.3-V core supply for microcontroller, CAN transceiver, and LED drivers in door module or lighting control unit. IC Role / Device Role / Timing Role: Main system PMIC providing regulated rail with power-good sequencing and thermal fault reporting to BCM host MCU. Use Value: AEC-Q100 Grade 1 qualification and –40°C to +125°C ambient operation ensure reliability across full vehicle lifecycle; 26 µA IQ extends battery life in always-on monitoring states. |
| Automotive Infotainment Display Backlight | Telematics Control Unit (TCU) Auxiliary Rail |
Use Scenario: Supplies adjustable voltage (e.g., 5–12 V) to LED backlight driver IC in center-stack display with dynamic dimming. IC Role / Device Role / Timing Role: Pre-regulator stepping down 12-V battery to intermediate rail, enabling high-efficiency linear or buck-boost LED driver operation. Use Value: Wide 4.2–60 V input accommodates stop-start and load-dump events; FPWM mode prevents flicker during PWM dimming signal transitions. |
Use Scenario: Provides isolated 3.3-V auxiliary rail for GNSS receiver, cellular modem, and secure element in connected TCU operating in engine bay proximity. IC Role / Device Role / Timing Role: Secondary buck converter supporting low-power always-on functions with controlled start-up timing and fault isolation. Use Value: Precision enable threshold and soft-start (3–6 ms) prevent inrush current during ignition-on sequencing; thermal shutdown protects against sustained high-ambient exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR36006FSCQRNXTQ1 | Same VQFN-HR package, 60 V/0.6 A rating, identical 2.1 MHz FPWM and spread-spectrum features. | Lower current capability suits lower-power domains (e.g., sensor interfaces), but cannot replace LMR36015FSCQRNXTQ1 in 1.5-A loads. | Select when system load is ≤600 mA and footprint reuse is prioritized; verify thermal margin at full load. |
| LMR33620FSCQRNXTQ1 | 36 V input, 2 A output, same 2.1 MHz FPWM and HotRod™ package; lacks 60 V rating and higher VIN transient tolerance. | Optimized for 12-V/24-V systems only; unsuitable for 48-V architectures or high-transient commercial vehicles. | Choose for cost-sensitive 2-A designs where 60 V operation is unnecessary; confirm input transient immunity meets OEM spec. |
Compared with LMR36006FSCQRNXTQ1 and LMR33620FSCQRNXTQ1, the LMR36015FSCQRNXTQ1 uniquely balances 60-V capability, 1.5-A output, and 2.1-MHz FPWM in a 2-mm × 3-mm footprint - making it the only option among the three qualified for high-current, high-input-voltage ADAS camera rails requiring Class 5 EMI compliance.
Availability
LMR36015FSCQRNXTQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, body control units, and telematics control units requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for LMR36015FSCQRNXTQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive power management and functional safety solutions.
The LMR36015FSCQRNXTQ1 belongs to TI's LMR3x60-Q1 family of automotive-grade buck converters, designed specifically for space-constrained, EMI-sensitive ADAS and infotainment subsystems requiring high input voltage resilience and AEC-Q100 compliance.
FAQ
What is the maximum input voltage rating for the LMR36015FSCQRNXTQ1?
The LMR36015FSCQRNXTQ1 has an absolute maximum input voltage rating of 66 V, with recommended operating range from 4.2 V to 60 V. This allows reliable operation during automotive load-dump events and cold-crank conditions. The 60-V upper limit ensures safe continuous operation, while the 66-V absolute max accommodates brief transients per ISO 7637-2.
Does the LMR36015FSCQRNXTQ1 support fixed-output voltage configurations?
Yes, the LMR36015FSCQRNXTQ1 supports both adjustable and fixed-output variants. While the LMR36015FSCQRNXTQ1 itself is adjustable (via FB pin), TI offers pin-compatible fixed 3.3-V versions (e.g., LMR36015FSC3RNXRQ1). The adjustable version uses a resistor divider on FB to set VOUT, leveraging its precise 1.0-V reference.
How does the power-good (PG) flag behave during startup and fault conditions for the LMR36015FSCQRNXTQ1?
The LMR36015FSCQRNXTQ1 PG pin is an open-drain output that remains low for ~4 ms after EN assertion, then goes high when VOUT reaches 95% of target and remains within regulation. It pulls low during thermal shutdown, current-limit hiccup, EN deactivation, or if VOUT drops below 93% of nominal - with built-in 80–200 µs deglitching to reject transients.
What thermal metrics define the LMR36015FSCQRNXTQ1's cooling performance in PCB layout?
The LMR36015FSCQRNXTQ1 in its VQFN-HR package has RθJA = 72.5°C/W (JEDEC High-K board), RθJB = 23.3°C/W, and ψJB = 23.5°C/W. Effective thermal design requires ≥4 thermal vias under the exposed pad, connected to inner-layer ground planes, and adequate copper area to sustain 1.5-A continuous load at +125°C ambient.
Is the LMR36015FSCQRNXTQ1 compatible with WEBENCH® Power Designer?
Yes, the LMR36015FSCQRNXTQ1 is fully supported in TI's WEBENCH® Power Designer tool. Engineers can generate complete schematics, perform efficiency and thermal simulations, optimize component selection (inductor, capacitors, resistors), and export design files - all validated against the official LMR36015-Q1 reference design and electrical characteristics.
LMR36015FSCQRNXTQ1 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):
- 58V
- Current - Output:
- 1.5A
- 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)
LMR36015FSCQRNXTQ1 FAQ
1.How can I place an order for LMR36015FSCQRNXTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR36015FSCQRNXTQ1 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 LMR36015FSCQRNXTQ1 reliable?
The price and inventory of LMR36015FSCQRNXTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR36015FSCQRNXTQ1 is usually 5 days.
3.What payment methods are accepted for LMR36015FSCQRNXTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR36015FSCQRNXTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR36015FSCQRNXTQ1?
LMR36015FSCQRNXTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR36015FSCQRNXTQ1 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 LMR36015FSCQRNXTQ1?
For technical support, including LMR36015FSCQRNXTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR36015FSCQRNXTQ1 requirements.
6.How does Aetrix verify that LMR36015FSCQRNXTQ1 is sourced from the original manufacturer or authorized distributors?
All LMR36015FSCQRNXTQ1 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 LMR36015FSCQRNXTQ1 meets industry standards.
7.What is the process for return or replacement of LMR36015FSCQRNXTQ1?
All LMR36015FSCQRNXTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMR36015FSCQRNXTQ1, 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 LMR36015FSCQRNXTQ1 part is unused and in its original packaging.
Return procedure for LMR36015FSCQRNXTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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