My Inquiry
My Account
Texas Instruments LM61460AANQRJRRQ1
- Part No.:
- LM61460AANQRJRRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerVFQFN
- Datasheet:
-
LM61460AANQRJRRQ1.pdf
- Description:
- IC REG BUCK ADJ 6A 14VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,078
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM61460AANQRJRRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC-DC converter delivering up to 6 A output current across a 3-V to 36-V input range, with 42-V load dump tolerance, ±1% total output regulation accuracy, and adjustable output voltage from 1 V to 95% of VIN - used in automotive infotainment head units and ADAS power rails.
For engineers reviewing the LM61460AANQRJRRQ1 datasheet, LM61460AANQRJRRQ1 pinout, LM61460AANQRJRRQ1 application, or LM61460AANQRJRRQ1 equivalent, key selection considerations include ultra-low EMI performance (CISPR 25 Class 5 compliant), spread-spectrum operation, adjustable SW node rise time, HotRod™ VQFN-HR package, and Auto-mode light-load efficiency down to 7 µA.
Technical Context
The LM61460AANQRJRRQ1 implements peak-current mode control with integrated high-side (41 mΩ typical RDS(ON)) and low-side (21 mΩ typical RDS(ON)) MOSFETs, enabling stable 6-A operation across 200 kHz–2.2 MHz switching frequency range. Its dual-VIN architecture (VIN1/VIN2) and parallel input path minimize parasitic inductance for robust EMI performance.
It features pseudo-random spread spectrum (±2% frequency deviation), programmable RT-based frequency setting, adjustable SW node rise time via RBOOT, soft recovery from dropout, and precision enable/synchronization (EN/SYNC) with 1.263-V threshold and 28% hysteresis - all operating over –40°C to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 36 V operating; withstands 42-V automotive load dump transients without external protection. |
| Output Current | Up to 6 A continuous DC output; high-side current limit 10.3 A typical ensures robust overload handling. |
| Regulation Accuracy | ±1% total output voltage accuracy over line, load, and temperature - critical for sensitive SoC and MCU rails. |
| Quiescent Current | 7 µA typical at no load (13.5 VIN, 3.3 VOUT, Auto Mode) - extends battery life in always-on automotive modules. |
| Switching Frequency | Adjustable 200 kHz to 2.2 MHz via RT resistor or external sync signal - avoids AM band interference and enables compact magnetics. |
| EMI Performance | CISPR 25 Class 5 compliant; achieved via HotRod™ package, spread spectrum, and adjustable SW rise time - eliminates need for shielding. |
| Thermal Rating | AEC-Q100 Grade 1 qualified (–40°C to +150°C TJ); thermal shutdown at 168°C with 10°C hysteresis. |
Pinout & Package
VQFN-HR (14-pin) package, 4.00 mm × 3.50 mm body size with wettable flanks for automated optical inspection (AOI) and enhanced solder joint reliability in automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BIAS (1) | Internal LDO bias input | Connect to VOUT (≤12 V) to improve efficiency; bypass with 0.1–1 µF capacitor to AGND for noise immunity. |
| VCC (2) | Internal LDO output | Supplies internal control circuitry; requires 1-µF capacitor to AGND - no external loading permitted. |
| AGND (3) | Analog ground reference | Reference point for FB and VCC; must be connected to both PGND1 and PGND2 on PCB for accurate regulation. |
| FB (4) | Feedback voltage input | Connects to resistive divider tap; sets output voltage; input bias current only 10 nA - minimizes divider error. |
| PGOOD (5) | Open-drain power-good status | Signals regulation status (high = OK); active-low fault indication; supports 20-V max pull-up voltage. |
| RT (6) | Frequency programming input | Resistor-to-ground (5.76 kΩ–66.5 kΩ) sets fSW from 200 kHz to 2.2 MHz - enables precise EMI band avoidance. |
| EN/SYNC (7) | Enable & synchronization input | 1.263-V precision enable threshold; also accepts external clock (200–2200 kHz) for forced PWM operation. |
| VIN1 (8), VIN2 (12) | Dual input power pins | Parallel input path reduces loop inductance; each requires local high-quality bypass capacitors to respective PGND. |
| PGND1 (9), PGND2 (11) | Power ground terminals | Separate paths for low-side MOSFET return; must be low-impedance and joined to AGND at single point. |
| SW (10) | Switch node output | Connects directly to power inductor; hot-switching node - layout critical for EMI and efficiency. |
| RBOOT (13) | SW rise-time control | Resistor between RBOOT and CBOOT adjusts SW node dV/dt - fine-tunes EMI vs. efficiency trade-off. |
| CBOOT (14) | High-side gate driver supply | 100-nF bootstrap capacitor between CBOOT and SW; internal diode charges from VCC during low-SW phase. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low EMI architecture | HotRod™ VQFN-HR package + parallel VIN paths + spread spectrum + adjustable SW rise time - meets CISPR 25 Class 5 without shielding. |
| Automotive-grade reliability | AEC-Q100 Grade 1 qualified (–40°C to +150°C TJ); 42-V load dump tolerant; functional safety documentation available. |
| Light-load efficiency optimization | Auto-mode enables frequency foldback; achieves 7 µA no-load IQ and 83% PFM efficiency at 1 mA (13.5 VIN, 5 VOUT). |
| Flexible output configuration | VOUT adjustable from 1 V to 95% of VIN; ±1% regulation accuracy; 0.4-V dropout at 4-A load ensures stable rail under heavy transient loads. |
| Scalable system design | PIN-compatible with LM61440-Q1 (4 A) and LM62440-Q1 (4 A, fixed fSW) - simplifies platform power architecture migration. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and USB charging circuits in automotive head units requiring clean, regulated 3.3-V/5-V rails. IC Role / Device Role / Timing Role: Primary buck regulator converting 12-V battery to stable low-voltage system rails with minimal conducted emissions. Use Value: Spread spectrum and HotRod™ packaging suppress AM-band noise, eliminating need for costly EMI filters in compact head unit enclosures. |
Use Scenario: Supplies image sensor, ISP, and SerDes in forward-facing ADAS cameras exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC-DC converter delivering 6-A peak current during sensor burst modes. Use Value: –40°C to +150°C operation and 168°C thermal shutdown ensure uninterrupted function in engine bay–mounted camera housings. |
| Body Control Module (BCM) Core Rail | Telematics Control Unit (TCU) Input Stage |
|
Use Scenario: Generates 3.3-V core voltage for microcontrollers and CAN transceivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: Always-on buck regulator supporting low-quiescent-current sleep states while maintaining fast wake-up response. Use Value: 7-µA no-load current and precision enable (VEN = 1.263 V) enable deep-sleep power budget compliance per ISO 16750-2. |
Use Scenario: First-stage step-down in TCU power tree, accepting 12-V/24-V battery input and delivering 5-V intermediate rail for secondary converters. IC Role / Device Role / Timing Role: Wide-input, high-transient-tolerance buck converter handling cold-crank (3.0 V) and load-dump (42 V) events. Use Value: 3.0-V minimum start-up and 42-V absolute maximum rating eliminate need for upstream TVS or overvoltage clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61440AANQRJRRQ1 | Same VQFN-HR package, identical pinout, but rated for 4 A (vs. 6 A); lower RDS(ON) (HS: 32 mΩ, LS: 16 mΩ). | Lower output current capability; suitable for sub-4-A infotainment subsystems where board space and BOM cost are prioritized. | Select when full 6-A headroom is unnecessary and thermal margin allows derating - retains same layout and firmware. |
| LM62440AANQRJRRQ1 | Fixed 2.1-MHz switching frequency (no RT pin); otherwise identical pinout and electrical specs except fSW adjustability. | Eliminates RT resistor and associated layout complexity; optimized for smallest solution size where EMI bands are known and fixed. | Choose for simplified design-in where 2.1-MHz operation is acceptable and AM-band avoidance is not required. |
Compared with LM61440AANQRJRRQ1 and LM62440AANQRJRRQ1, the LM61460AANQRJRRQ1 provides higher current delivery (6 A), adjustable frequency tuning for dynamic EMI mitigation, and broader input surge tolerance - making it optimal for next-generation ADAS and centralized domain controller power stages.
Availability
LM61460AANQRJRRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body electronics requiring stable component supply with AEC-Q100 qualification and long-term production support.
Supply support for LM61460AANQRJRRQ1 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 decades of automotive qualification expertise and broad AEC-Q100 portfolio coverage.
The LM61460-Q1 belongs to TI's automotive DC-DC converter family designed specifically for low-EMI, high-reliability power conversion in infotainment, ADAS, and body electronics - emphasizing thermal robustness, functional safety readiness, and CISPR 25 compliance.
FAQ
What is the maximum input voltage the LM61460AANQRJRRQ1 can withstand during automotive load dump events?
The LM61460AANQRJRRQ1 supports 42-V absolute maximum input voltage per its AEC-Q100 qualification, enabling direct connection to automotive 12-V battery systems without external overvoltage protection. This rating covers transient load dump conditions defined in ISO 7637-2 and SAE J1113-11, ensuring reliable operation during harsh vehicle electrical events. The device maintains regulation down to 3.0 V input, covering cold-crank scenarios.
Does the LM61460AANQRJRRQ1 support spread spectrum operation, and how is it enabled?
Yes, the LM61460AANQRJRRQ1 supports pseudo-random spread spectrum modulation by default in its standard configuration (LM61460AANQRJRRQ1 variant). Spread spectrum reduces peak radiated emissions by ±2% frequency deviation around the center switching frequency, helping meet CISPR 25 Class 5 requirements. No external components or configuration are required - it is enabled internally and cannot be disabled in this part number.
What is the purpose of the RBOOT pin on the LM61460AANQRJRRQ1, and how does it affect performance?
The RBOOT pin on the LM61460AANQRJRRQ1 controls the rise time of the SW node by adjusting gate drive strength to the high-side MOSFET. A resistor between RBOOT and CBOOT (0 Ω to open) sets dV/dt - lower resistance yields faster rise time (2.15 ns typical) for higher efficiency, while higher resistance slows rise time (2.7 ns at 100 Ω) to reduce EMI. This allows designers to optimize the trade-off between switching loss and electromagnetic compatibility without changing layout or components.
Can the LM61460AANQRJRRQ1 operate in forced PWM mode, and how is it configured?
Yes, the LM61460AANQRJRRQ1 can operate in forced PWM mode by applying an external synchronization signal to the EN/SYNC pin. When synchronized to an external clock (200 kHz–2.2 MHz), the device disables Auto-mode frequency foldback and PFM operation, ensuring constant switching frequency regardless of load. This is essential for noise-sensitive applications like audio or radar where variable-frequency operation could cause beat frequencies or interference.
What thermal metrics apply to the LM61460AANQRJRRQ1 in its VQFN-HR package, and how do they impact PCB design?
The LM61460AANQRJRRQ1 in the 14-pin VQFN-HR (RJR) package has a junction-to-board thermal resistance (RθJB) of 19.2°C/W and junction-to-case (bottom) thermal resistance of 19.2°C/W - indicating strong thermal coupling to the PCB. To achieve rated 6-A output, designers must use ≥2 oz copper, multiple thermal vias under the exposed pad, and adequate copper area per TI's layout guidelines. The 4-layer JEDEC board RθJA is 58.7°C/W, but actual board-level RθJA can reach 25°C/W with optimized layout.
LM61460AANQRJRRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-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):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 34.2V
- Current - Output:
- 6A
- Frequency - Switching:
- 200kHz ~ 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:
- 14-VQFN-HR (4x3.5)
LM61460AANQRJRRQ1 FAQ
1.How can I place an order for LM61460AANQRJRRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM61460AANQRJRRQ1 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 LM61460AANQRJRRQ1 reliable?
The price and inventory of LM61460AANQRJRRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM61460AANQRJRRQ1 is usually 5 days.
3.What payment methods are accepted for LM61460AANQRJRRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM61460AANQRJRRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM61460AANQRJRRQ1?
LM61460AANQRJRRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM61460AANQRJRRQ1 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 LM61460AANQRJRRQ1?
For technical support, including LM61460AANQRJRRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM61460AANQRJRRQ1 requirements.
6.How does Aetrix verify that LM61460AANQRJRRQ1 is sourced from the original manufacturer or authorized distributors?
All LM61460AANQRJRRQ1 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 LM61460AANQRJRRQ1 meets industry standards.
7.What is the process for return or replacement of LM61460AANQRJRRQ1?
All LM61460AANQRJRRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM61460AANQRJRRQ1, 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 LM61460AANQRJRRQ1 part is unused and in its original packaging.
Return procedure for LM61460AANQRJRRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM61460AANQRJRRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
