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Texas Instruments LM62460RPHR
- Part No.:
- LM62460RPHR
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerVFQFN
- Datasheet:
-
LM62460RPHR.pdf
- Description:
- IC REG BUCK ADJ 6A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,371
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Product details
Overview
LM62460RPHR from Texas Instruments is a 6-A synchronous buck converter IC operating from 3 V to 36 V input, delivering adjustable output (1 V to 95% of VIN) with 95% peak efficiency at 8-A load, 5-µA quiescent current in auto mode, and integrated RESET with delayed release-designed for industrial PC power rails requiring high density and low EMI compliance.
For engineers reviewing the LM62460RPHR datasheet, LM62460RPHR pinout, LM62460RPHR application, or LM62460RPHR equivalent, key selection criteria include its 4.5-mm × 3.5-mm wettable-flank VQFN package, pin-configurable spread spectrum, adjustable 200 kHz–2.2 MHz switching frequency, and functional safety documentation support.
Technical Context
The LM62460RPHR implements a current-mode control architecture with dual-random spread spectrum (DRSS) modulation (±5.5% frequency hopping), adjustable SW node rise time via RBOOT, and pin-selectable operation modes (Auto/FPWM/SYNC). Its internal compensation, soft-start, thermal shutdown, and UVLO eliminate external components while maintaining regulation down to 3 V after startup.
It integrates high-side (21 mΩ typ.) and low-side (13 mΩ typ.) MOSFETs, supports hiccup-mode overcurrent protection with 8–12.6 A short-circuit limit, and features a dedicated open-drain RESET output with 1.2–3.75 ms activation delay and 10–45 µs edge filtering-enabling system-level power sequencing without auxiliary ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 36 V continuous; withstands 42 V transients ≤100 ms - enables robust operation in automotive cranking and industrial line surges. |
| Output Current Rating | 6 A continuous - matches LM62460 variant's current capability per TI device comparison table. |
| Switching Frequency | Pin-configurable: fixed 400 kHz or 2.2 MHz, or adjustable 200 kHz–2.2 MHz via RT resistor - allows EMI optimization across AM band gaps. |
| Quiescent Current | 5 µA typical in auto mode - extends battery life in always-on industrial sensors and avionics standby systems. |
| Package | 16-pin VQFN (RPH), 4.5 mm × 3.5 mm with wettable flanks - supports automated optical inspection and high thermal performance (θJA = 21.6°C/W on EVM). |
| RESET Output | Open-drain with 1.2–3.75 ms valid delay and 10–45 µs deglitch - provides reliable power-good signaling for FPGA/CPU reset sequencing. |
| Thermal Shutdown | Trips at 158–180°C, recovers at 150–159°C - protects against sustained overload in enclosed PLC enclosures. |
Pinout & Package
LM62460RPHR uses a 4.5-mm × 3.5-mm, 16-pin VQFN package (RPH) with wettable flanks for solder joint inspection and enhanced thermal dissipation. Pin 1 is located at top-left corner when marking is oriented upright.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Primary and secondary input supply pins | Parallel connection reduces input loop inductance; requires separate high-quality bypass capacitors to PGND1/PGND2 for low-EMI operation. |
| PGND1, PGND2 | Power ground terminals | Must be connected with low-impedance PCB traces to system ground and tied together near the IC to minimize ground bounce. |
| SW | Switch node | Connects directly to output inductor; layout must minimize trace area to reduce radiated EMI from fast voltage transitions. |
| RBOOT | Rise-time control input | Series resistor (0–100 Ω) between RBOOT and CBOOT adjusts SW node slew rate - critical for CISPR Class B compliance. |
| RT | Frequency setting input | Resistor to GND (6.8 kΩ–80 kΩ) sets 200 kHz–2.2 MHz; tie to VCC for 400 kHz or GND for 2.2 MHz - enables precise EMI tuning. |
| SYNC/MODE | Mode selection and synchronization input | Pull low for PFM, high for FPWM, or drive with external clock - supports deterministic timing in synchronized multi-rail systems. |
| RESET | Open-drain power-good output | Active-low signal with built-in filtering and delayed release - eliminates need for external RC reset timers in industrial controllers. |
| EN | Enable input with precision threshold | 1.16–1.36 V rising threshold with 0.25–0.5 V hysteresis - allows programmable UVLO using resistor divider from VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Random Spread Spectrum (DRSS) | ±5.5% triangular + pseudo-random frequency modulation - reduces peak EMI emissions by >10 dB without increasing output ripple. |
| Adjustable SW Node Rise Time | Controlled via RBOOT resistor - enables fine-tuning of dv/dt to meet CISPR 11/32 Class B limits without ferrite beads. |
| Integrated Power-Good (RESET) | Filter + delayed-release logic ensures stable assertion only after output settles - replaces discrete reset ICs in PLC and avionics designs. |
| Auto Mode Light-Load Operation | Transitions between FPWM and PFM automatically - achieves 5 µA IQ while maintaining tight output regulation across 0–6 A load range. |
| Functional Safety Documentation | Available FIT data, FMEA reports, and safety analysis templates - accelerates ISO 26262 ASIL-B or IEC 61508 SIL-2 system certification. |
Applications
| Industrial PC Power Rail | Avionics DC-DC Conversion |
|---|---|
Use Scenario: Providing clean 5-V or 3.3-V rails for CPU, memory, and I/O in fanless industrial PCs deployed in factory automation environments. IC Role / Device Role / Timing Role: Primary synchronous buck regulator managing transient loads up to 6 A with <1.5% output accuracy and hiccup-mode fault recovery. Use Value: Eliminates need for external LDOs and reset supervisors due to integrated RESET and ultra-low 5-µA quiescent current in standby. |
Use Scenario: Converting 28-V aircraft bus to regulated 5-V and 3.3-V supplies for flight control computers and sensor interfaces. IC Role / Device Role / Timing Role: High-reliability buck converter with 42-V transient tolerance and thermal shutdown at 168°C - meets DO-160 Section 22 surge requirements. Use Value: Wettable-flank QFN package enables AOI verification; DRSS and low-EMI pinout avoid costly shielding in space-constrained avionics bays. |
| PLC Analog I/O Module | Semiconductor Test Equipment |
Use Scenario: Generating isolated 5-V bias for analog front-end ADCs and DACs in modular PLC backplanes with strict noise budgets. IC Role / Device Role / Timing Role: Low-noise, low-EMI power stage operating at 400 kHz to avoid interference with 16-bit ADC sampling clocks. Use Value: Adjustable SW rise time and spread spectrum suppress conducted emissions below 150 kHz - simplifies EMC pre-compliance testing. |
Use Scenario: Supplying precision 1.2-V to 3.3-V rails for high-speed digital test heads requiring rapid load-step response and minimal voltage droop. IC Role / Device Role / Timing Role: Fast-transient buck regulator with 62-ns minimum on-time and 70-ns minimum off-time - maintains regulation during 5-A/µs load steps. Use Value: Built-in current limiting (8–12.6 A) and thermal foldback protect expensive DUTs during test fixture shorts or misconnections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RPHR | 8-A rated variant with identical pinout, package, and feature set - higher current limit (11.5–15.6 A) and lower RDS-ON (18/11 mΩ). | Required where peak load exceeds 6 A but board space and EMI constraints match LM62460RPHR design. | Select LM61480RPHR only if full 8-A capability is needed; shares same layout and firmware interface. |
| LM61495RPHR | 10-A rated variant with identical pinout and package - highest current limit (14–20 A), lowest RDS-ON (16/10 mΩ), and extended thermal margin. | Suitable for future-proofing or higher-power modules where thermal headroom is critical, e.g., in semiconductor ATE mainframes. | Choose LM61495RPHR when designing for scalability beyond 6 A or when operating near thermal limits in sealed enclosures. |
Compared with LM61480RPHR and LM61495RPHR, the LM62460RPHR delivers optimal cost-performance balance for 6-A applications, avoiding over-specification while retaining full pin compatibility, identical EMI features, and shared layout reuse - reducing BOM count and qualification effort across product families.
Availability
LM62460RPHR is available at Aetrix Electronics and suitable for industrial PC, avionics, and PLC applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM62460RPHR 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 power management technologies, with decades of expertise in high-reliability industrial and automotive power solutions.
The LM6x4xx family-including LM62460RPHR-is engineered for high-power-density, low-EMI DC/DC conversion in harsh environments such as factory automation, aerospace, and test equipment, where thermal resilience and electromagnetic compatibility are non-negotiable.
FAQ
What is the maximum input voltage transient rating for LM62460RPHR?
The LM62460RPHR supports 42 V transients at the VIN pins for durations ≤100 ms with duty cycle ≤0.01%, while sustaining 36 V continuously. This rating is validated per absolute maximum ratings in the datasheet and enables use in automotive cold-crank and industrial surge scenarios without external clamping.
Does LM62460RPHR require external compensation components?
No, LM62460RPHR includes fully integrated compensation circuitry. Its current-mode control architecture eliminates the need for external Type II or Type III compensation networks, reducing BOM count and layout complexity while maintaining stability across all operating conditions specified in the datasheet.
How does the RESET output of LM62460RPHR behave during startup and fault conditions?
The LM62460RPHR RESET output remains low until the FB voltage reaches 94–96.5% of target and remains valid for ≥1.2 ms. It asserts low again during undervoltage (FB < 92–94%), overvoltage (FB > 110–114%), or EN deactivation - providing deterministic power-good signaling for sequenced system boot.
Can LM62460RPHR operate with an input voltage below 3.7 V?
Yes - LM62460RPHR starts up at 3.7 V but sustains regulation down to 3.0 V after startup. This extended operating range supports brownout resilience in battery-backed industrial systems, though full 6-A output capability requires ≥3.95 V input when VOUT = 3.3 V per system characteristics table.
What is the thermal performance difference between LM62460RPHR and its higher-current variants?
LM62460RPHR shares the same 4.5-mm × 3.5-mm RPH package and thermal metrics (θJA = 21.6°C/W on EVM) as LM61480RPHR and LM61495RPHR. However, its lower 6-A current rating results in reduced conduction losses and cooler junction temperatures under identical load conditions - extending reliability in thermally constrained layouts.
LM62460RPHR 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:
- 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:
- 400kHz, 2.2MHz, 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN-HR (4.5x3.5)
LM62460RPHR FAQ
1.How can I place an order for LM62460RPHR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM62460RPHR 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 LM62460RPHR reliable?
The price and inventory of LM62460RPHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM62460RPHR is usually 5 days.
3.What payment methods are accepted for LM62460RPHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM62460RPHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM62460RPHR?
LM62460RPHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM62460RPHR 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 LM62460RPHR?
For technical support, including LM62460RPHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM62460RPHR requirements.
6.How does Aetrix verify that LM62460RPHR is sourced from the original manufacturer or authorized distributors?
All LM62460RPHR 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 LM62460RPHR meets industry standards.
7.What is the process for return or replacement of LM62460RPHR?
All LM62460RPHR units undergo pre-shipment inspection (PSI). If there is an issue with LM62460RPHR, 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 LM62460RPHR part is unused and in its original packaging.
Return procedure for LM62460RPHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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