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Texas Instruments LM62460Q3RPHRQ1
- Part No.:
- LM62460Q3RPHRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerVFQFN
- Datasheet:
-
LM62460Q3RPHRQ1.pdf
- Description:
- IC REG BUCK 3.3V 6A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,766
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Product details
Overview
LM62460Q3RPHRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck converter delivering up to 6 A output current, operating from 3 V to 36 V input, with fixed 3.3 V output, 2.2 MHz switching frequency (pin-selectable), and integrated RESET with filtered delay - designed for infotainment power rails in compact, EMI-sensitive vehicle ECUs.
For engineers reviewing the LM62460Q3RPHRQ1 datasheet, LM62460Q3RPHRQ1 pinout, LM62460Q3RPHRQ1 application, or LM62460Q3RPHRQ1 equivalent, key selection criteria include its wettable-flank 4.5 mm × 3.5 mm VQFN-HR package, dual-side cooling compatibility, CISPR 25 Class 5 EMI compliance, and functional safety documentation support for ASIL-B system integration.
Technical Context
The LM62460Q3RPHRQ1 implements a synchronous buck topology with integrated high- and low-side MOSFETs (RDS(on) = 21 mΩ HS / 13 mΩ LS), adjustable SW node rise time via RBOOT, and pin-configurable spread spectrum (±4% Δf) using DRSS modulation to suppress peak emissions. Its internal compensation, soft-start, and thermal shutdown eliminate external components required for stability and protection.
It supports three operating modes via SYNC/MODE pin: Auto (PFM/PWM transition), forced PWM, or external clock synchronization (200 kHz–2.2 MHz). The RESET output provides true power-good status with 1.2–3.75 ms active delay and 92–96.5% UV/110–114% OV thresholds relative to FB voltage, referenced to a ±0.3% initial 3.3 V output accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6 A continuous - supports full-load operation in ADAS camera modules and instrument cluster SoC rails without derating at TJ ≤ 150°C. |
| Input Voltage Range | 3 V to 36 V - sustains regulation during cold-crank (≥3.95 V min at full load) and handles 42 V transients ≤100 ms. |
| Fixed Output Voltage | 3.3 V ±0.3% - eliminates external feedback divider; enables direct powering of MCU I/O domains and LPDDR interfaces. |
| Switching Frequency | 2.2 MHz (pin-selectable) - allows use of small 0.47 µH inductors and avoids AM band interference in head unit designs. |
| Quiescent Current | 5 µA in auto mode - extends battery runtime in always-on vehicle networks with <1 µA shutdown current. |
| Thermal Resistance | RθJA = 21.6 °C/W on EVM - enables 6 A operation at +85°C ambient without forced airflow in sealed enclosures. |
| EMI Performance | CISPR 25 Class 5 compliant - achieves pass-level radiated emissions without shielding or ferrite beads on production PCBs. |
Pinout & Package
LM62460Q3RPHRQ1 uses a 16-pin VQFN-HR (RPH) package with wettable flanks, 4.5 mm × 3.5 mm footprint, and exposed thermal pad for dual-side cooling. Pin 1 is top-left corner (VCC), pin numbering follows counter-clockwise sequence per TI SLOA222A layout standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Power inputs | Dual input pins reduce high-frequency loop inductance; require separate 10 µF ceramic bypass capacitors to PGND1/PGND2. |
| PGND1, PGND2 | Power ground returns | Independent low-side MOSFET grounds; must be connected with low-inductance copper pour to minimize EMI and current imbalance. |
| SW | Switch node | Connects directly to output inductor; slew rate controlled by RBOOT resistor (0–100 Ω) to balance EMI vs. efficiency. |
| FB | Feedback input | Internally biased to 1 V reference; for 3.3 V fixed version, connects to output rail - no external resistors needed. |
| RESET | Open-drain power-good | Asserts low after 1.2–3.75 ms delay when FB drops below 92–96.5% of target; requires external pull-up for MCU reset assertion. |
| EN | Enable control | 1.23–1.31 V threshold with 0.25–0.5 V hysteresis; supports precision UVLO configuration by resistor-divider from VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-to-pin compatibility | Shares footprint and pinout with LM61480Q3RPHRQ1 (8 A) and LM61495Q3RPHRQ1 (10 A) - enables scalable power design across vehicle platforms. |
| Dual Random Spread Spectrum (DRSS) | ±4% triangular + pseudorandom frequency hopping - reduces peak radiated emissions by >10 dBµV/m vs. fixed-frequency operation. |
| Low-EMI symmetrical pinout | Input/ground pairs placed opposite each other - minimizes high-di/dt loop area and common-mode noise coupling to adjacent traces. |
| Functional safety documentation | TI-provided FIT rate, failure mode analysis, and diagnostic coverage reports - accelerates ISO 26262 ASIL-B hardware qualification. |
| Wettable flank package | Enlarged corner terminals enable automated optical inspection (AOI) of solder joints - improves manufacturing yield in automotive SMT lines. |
Applications
| Automotive Infotainment | Instrument Cluster |
|---|---|
Use Scenario: Powering SoC core, GPU, and DDR memory in head unit systems requiring stable 3.3 V under wide input transients. IC Role / Device Role / Timing Role: Primary buck regulator supplying 3.3 V domain with fast transient response (<10 µs recovery) and low output ripple (<15 mVpp). Use Value: Eliminates need for secondary LDO by delivering ±0.3% output accuracy and 5 µA quiescent current in sleep mode. |
Use Scenario: Generating 3.3 V for TFT display controller, touch interface, and CAN transceiver in digital dashboards. IC Role / Device Role / Timing Role: High-density point-of-load regulator with 2.2 MHz switching to avoid AM band interference near analog audio circuits. Use Value: Wettable flank RPH package enables 100% AOI coverage for zero-defect requirements in Tier-1 dashboard assemblies. |
| ADAS Camera Module | Body Control Module (BCM) |
Use Scenario: Supplying image sensor and ISP in rear-view or surround-view cameras exposed to engine bay temperature extremes. IC Role / Device Role / Timing Role: Automotive-grade buck converter with –40°C to +125°C ambient rating and thermal shutdown at 158–180°C junction. Use Value: Built-in current limit (8–12.6 A short-circuit) and hiccup mode protect against sensor cable shorts without external fusing. |
Use Scenario: Powering microcontroller, LIN transceivers, and LED drivers in centralized body electronics with strict EMI limits. IC Role / Device Role / Timing Role: Low-EMI regulator with pin-configurable spread spectrum and adjustable SW rise time for CISPR 25 Class 5 compliance. Use Value: RESET output replaces discrete supervisor IC, reducing BOM count while providing synchronized power-good timing to MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480Q3RPHRQ1 | 8 A rated, identical pinout and package; higher current capability with same 3.3 V fixed output and 2.2 MHz option. | Suitable where future-proofing for higher load or parallel operation is required; thermal margin increases by ~33% at 6 A. | Select when board layout must support upgrade path to 8 A without redesign; shares same EVM and layout guidelines. |
| TPS546B24ARVFT | 6 A, 3.3 V adjustable (not fixed); supports PMBus interface, higher 1.5 MHz default frequency, and different 16-pin QFN package (4 mm × 4 mm). | Used in programmable power systems requiring dynamic voltage scaling or telemetry; lacks RESET output and AEC-Q100 Grade 1 rating. | Choose only if digital control, telemetry, or non-automotive industrial use case justifies requalification and layout change. |
Compared with LM61480Q3RPHRQ1, LM62460Q3RPHRQ1 offers lower cost and optimized thermal performance at 6 A, while TPS546B24ARVFT adds digital configurability at the expense of automotive qualification and integrated power-good signaling.
Availability
LM62460Q3RPHRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster, and ADAS camera module designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for LM62460Q3RPHRQ1 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 ICs, with over 50 years of innovation in power management solutions.
The LM6x4xx-Q1 family was developed specifically for high-density, low-EMI automotive DC/DC conversion - targeting infotainment, ADAS, and digital cockpit applications where space, thermal, and EMC constraints dominate design trade-offs.
FAQ
What is the maximum input voltage transient rating for LM62460Q3RPHRQ1?
The LM62460Q3RPHRQ1 supports 42 V transients at the VIN pins for durations ≤100 ms and duty cycle ≤0.01%. Continuous operation is rated up to 36 V. This enables robust performance during load-dump events in 12 V automotive systems without external TVS clamping in most implementations.
Does LM62460Q3RPHRQ1 require external compensation components?
No, LM62460Q3RPHRQ1 features fully integrated compensation circuitry. Its internal Type III compensator eliminates the need for external RC networks, reducing BOM count and layout complexity while maintaining stability across all supported output capacitors and inductors specified in the datasheet.
How does the RESET output of LM62460Q3RPHRQ1 behave during startup?
The LM62460Q3RPHRQ1 RESET output remains low until the output reaches 92–96.5% of nominal 3.3 V and remains valid for ≥1.2 ms. It then releases high with a 10–45 µs deglitch filter. This ensures clean MCU reset release only after stable regulation is achieved, preventing premature firmware execution.
Can LM62460Q3RPHRQ1 operate in forced PWM mode below light-load conditions?
Yes, LM62460Q3RPHRQ1 supports forced PWM operation via the SYNC/MODE pin. Pulling this pin high disables PFM, maintaining constant frequency and low output voltage ripple even at 1 mA loads - critical for noise-sensitive ADC or RF subsystems sharing the same power rail.
What is the thermal performance difference between LM62460Q3RPHRQ1 and LM61495Q3RPHRQ1 on the same PCB?
On identical layouts, LM62460Q3RPHRQ1 runs ~12°C cooler than LM61495Q3RPHRQ1 at 6 A due to lower RDS(on) (21 mΩ HS vs. 14 mΩ HS) and reduced conduction loss. Its 21.6 °C/W RθJA (EVM) enables full 6 A output at +85°C ambient without thermal throttling, whereas LM61495Q3RPHRQ1 would require derating above 5.5 A.
LM62460Q3RPHRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-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):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 6A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-VQFN-HR (4.5x3.5)
LM62460Q3RPHRQ1 FAQ
1.How can I place an order for LM62460Q3RPHRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM62460Q3RPHRQ1 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 LM62460Q3RPHRQ1 reliable?
The price and inventory of LM62460Q3RPHRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM62460Q3RPHRQ1 is usually 5 days.
3.What payment methods are accepted for LM62460Q3RPHRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM62460Q3RPHRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM62460Q3RPHRQ1?
LM62460Q3RPHRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM62460Q3RPHRQ1 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 LM62460Q3RPHRQ1?
For technical support, including LM62460Q3RPHRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM62460Q3RPHRQ1 requirements.
6.How does Aetrix verify that LM62460Q3RPHRQ1 is sourced from the original manufacturer or authorized distributors?
All LM62460Q3RPHRQ1 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 LM62460Q3RPHRQ1 meets industry standards.
7.What is the process for return or replacement of LM62460Q3RPHRQ1?
All LM62460Q3RPHRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM62460Q3RPHRQ1, 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 LM62460Q3RPHRQ1 part is unused and in its original packaging.
Return procedure for LM62460Q3RPHRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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