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Texas Instruments LM60430ARPKR
- Part No.:
- LM60430ARPKR
- Manufacturer:
- Texas Instruments
- Package:
- 13-PowerWFQFN
- Datasheet:
-
LM60430ARPKR.pdf
- Description:
- IC REG BUCK ADJ 3A 13WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,850
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Product details
Overview
LM60430ARPKR from Texas Instruments is a 3.8-V to 36-V, 3-A synchronous step-down DC/DC converter in a 3.0 mm × 2.0 mm WQFN-13 package with wettable flanks. It delivers peak efficiency >95%, supports 400 kHz fixed switching frequency, regulates output from 1 V to 24 V, and operates across –40°C to +150°C junction temperature for industrial power rails.
For engineers reviewing the LM60430ARPKR datasheet, LM60430ARPKR pinout, LM60430ARPKR application, or LM60430ARPKR equivalent, key selection criteria include its ultra-small thermally enhanced QFN footprint, 25 µA quiescent current in PFM mode, integrated high-side/low-side MOSFETs (RDS(on) = 76 mΩ / 51 mΩ), power-good flag with glitch filtering, and functional safety documentation support.
Technical Context
The LM60430ARPKR uses peak-current-mode control with automatic PWM-to-PFM transition to maintain high efficiency across 10 mA–3 A load range. Its internal 5-V LDO powers control circuitry, while the BOOT-SW bootstrap network sustains high-side gate drive under continuous conduction.
It integrates valley and peak current limiting (ISC = 3.85–5.05 A, ILIMIT = 2.9–4.1 A), hiccup-mode short-circuit protection (tHC = 94 ms), and thermal shutdown (TSD = 165°C). The FB pin references a precision 1.0 V ±1.5% bandgap, enabling accurate adjustable output regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.8 V to 36 V - supports wide industrial input rails including 12 V, 24 V, and 36 V systems without external pre-regulation. |
| Output Current | Up to 3 A continuous - sufficient for FPGA core rails, microcontroller I/O supplies, and servo logic power domains. |
| Switching Frequency | 400 kHz (fixed) - balances EMI performance and inductor size; avoids AM radio band while enabling compact magnetics. |
| Feedback Reference | 1.0 V ±1.5% - enables precise output setting via resistor divider; supports 1 V to 24 V adjustable outputs with <±2.5% total regulation error. |
| Quiescent Current | 25 µA in PFM mode - extends battery life in always-on industrial sensors and low-power standby circuits. |
| Thermal Resistance | RθJA = 54 °C/W (JEDEC 4-layer board) - validated for high-power density layouts using DAP thermal pad and ≥6 thermal vias. |
| EMI Performance | CISPR-22 Class B compliant - achieved via minimized switch-node ringing, symmetrical VIN/PGND layout, and enhanced QFN parasitic suppression. |
Pinout & Package
LM60430ARPKR is housed in a 3.0 mm × 2.0 mm, 13-pin WQFN package with wettable flanks and an exposed thermal pad (DAP) soldered to PGND for optimal heat dissipation. The package supports automated optical inspection (AOI) and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 PGND | Power Ground | Main return path for high-current inductor and input capacitor; must connect directly to system ground plane and AGND with low-inductance traces. |
| 2, 10 VIN | Input Supply | Accepts 3.8–36 V; requires local 10–22 µF ceramic bypass capacitor placed adjacent to pins 2/10 and PGND. |
| 3, 12 SW | Switch Node | Connects to inductor; high dv/dt node requiring minimal trace area and separation from sensitive analog routing. |
| 4 BOOT | Bootstrap Supply | Drives high-side MOSFET gate; requires 100 nF X7R capacitor between BOOT and SW for reliable gate turn-on. |
| 5 VCC | Internal LDO Output | 5 V ±5% regulated supply for internal logic; not for external loading; decouple with 1 µF ceramic to AGND. |
| 6 AGND | Analog Ground | Reference for FB, EN, PG; tie to system ground at single point near IC to avoid noise coupling into feedback loop. |
| 7 FB | Feedback Input | Monitors output via resistor divider; 1.0 V reference sets VOUT = 1.0 × (1 + RFBB/RFBT); keep trace short and shielded. |
| 8 PG | Power-Good Flag | Open-drain output asserting high when VOUT is within ±5% of target; includes 170 µs glitch filter and 76 Ω pull-down RDS(on). |
| 9 EN | Enable Input | Logic-controlled startup: 1.23 V threshold with 100 mV hysteresis; can be tied to VIN or driven by MCU GPIO. |
| 13 DAP | Thermal Pad | Low-impedance thermal path to PCB ground plane; must be soldered with ≥6 thermal vias to inner ground layers for 150°C operation. |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety Documentation | TI provides FIT rate data, FMEA reports, and safety analysis templates-enabling ISO 26262 ASIL-B or IEC 61508 SIL-2 system integration. |
| Ultra-Small Thermally Optimized Package | 3.0 mm × 2.0 mm WQFN-13 with wettable flanks enables <25 mm² solution size while sustaining 3 A at 150°C junction temperature. |
| Low-EMI Switching Architecture | Symmetrical VIN/PGND pin layout cancels magnetic fields; combined with minimized switch-node ring, meets CISPR-22 Class B without shielding. |
| Light-Load Efficiency Optimization | PFM mode with diode emulation reduces IQ to 25 µA at 10 mA load, maintaining >90% efficiency at light loads (12 VIN, 5 VOUT). |
| Robust Protection Suite | Integrated hiccup-mode short-circuit response (94 ms off-time), thermal shutdown (165°C), and valley/peak current limiting prevent damage during fault conditions. |
Applications
| Industrial PLC Power Rail | Servo Drive Logic Supply |
|---|---|
|
Use Scenario: Powers 3.3 V or 5 V logic circuitry in programmable logic controllers operating in factory-floor environments with 24 V DC bus input. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering stable, low-noise supply to ARM Cortex-M7 microcontrollers and IO expanders. Use Value: 3 A capability supports multiple peripherals; 150°C rating ensures reliability in enclosed cabinets; wettable flanks enable AOI verification of solder joints. |
Use Scenario: Supplies isolated gate-driver bias and position-sensor interfaces in AC servo drives with 36 V intermediate bus. IC Role / Device Role / Timing Role: Secondary buck stage stepping down 36 V to 12 V or 5 V for digital control subsystems requiring fast transient response. Use Value: 400 kHz switching enables small 2.2 µH inductors; PFM mode maintains >92% efficiency at 20 mA standby current during motor idle. |
| Medical Instrumentation Subsystem | Automated Test Equipment (ATE) Channel Supply |
|
Use Scenario: Generates clean 1.8 V or 2.5 V analog supply for ADC front-ends and sensor signal conditioning in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision-regulated point-of-load converter with tight FB reference (±1.5%) and low output ripple (<10 mVpp). Use Value: 25 µA quiescent current extends battery runtime; integrated soft-start prevents inrush-induced voltage droop on shared battery rails. |
Use Scenario: Provides individually controlled 3.3 V rails per measurement channel in modular ATE systems with hot-swap 12 V backplane. IC Role / Device Role / Timing Role: Channel-level power manager with enable/disable sequencing and open-drain PG flag for system-level health monitoring. Use Value: EN pin allows per-channel power cycling; PG flag synchronizes firmware initialization with rail stabilization; 3.0 mm × 2.0 mm footprint saves board space in dense channel layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM60440ARPKR | 4 A rated current, identical 3.0 mm × 2.0 mm WQFN-13 package and pinout, same 400 kHz frequency and 3.8–36 V input range. | Used where higher output current headroom is required, e.g., powering dual-core processors or multi-rail FPGA banks. | Select LM60440ARPKR when design margin demands >3 A continuous output or future-proofing against load growth. |
| TPS543320RTWR | 3 A, 4.5–18 V input, 1.5 MHz switching, integrated MOSFETs, but larger 3.5 mm × 3.5 mm QFN-16 package and no wettable flanks. | Targeted at space-constrained but lower-voltage applications like telecom line cards or embedded networking gear. | Choose TPS543320RTWR only if 18 V max input suffices and higher frequency justifies larger footprint and missing AOI capability. |
Compared with LM60440ARPKR, the LM60430ARPKR trades 1 A output capacity for identical thermal, EMI, and layout advantages in the same ultra-compact package; versus TPS543320RTWR, it offers wider input range, better manufacturability, and superior light-load efficiency at the cost of lower switching frequency.
Availability
LM60430ARPKR is available at Aetrix Electronics and suitable for industrial PC power rails, servo drive logic supplies, and medical instrumentation subsystems requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.
Supply support for LM60430ARPKR 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 over 50 years of innovation in high-reliability power conversion ICs.
The LM604x0 product line was designed specifically for rugged industrial applications demanding ultra-small size, high efficiency across full load range, and robust thermal/EMI performance in harsh environments.
FAQ
What is the maximum ambient temperature at which LM60430ARPKR can deliver 3 A continuously?
LM60430ARPKR can sustain 3 A continuous output up to +85°C ambient when mounted on a 4-layer JEDEC board with 2 oz copper, 6 thermal vias under the DAP, and ≥4 cm² of 2 oz ground copper. At higher ambient temperatures, derating applies per RθJA = 54 °C/W; junction temperature must remain ≤150°C. Full 3 A operation at 150°C ambient requires active cooling or enhanced PCB thermal design.
Does LM60430ARPKR support adjustable output voltage below 1 V?
No, LM60430ARPKR does not support output voltages below 1 V. Its internal feedback reference is fixed at 1.0 V ±1.5%, and the datasheet specifies a minimum output voltage of 1 V. Attempting to set VOUT < 1 V violates the FB pin's operational range and results in loss of regulation, inaccurate output, or instability. For sub-1 V applications, consider TI's TPS62933 or similar dedicated low-VOUT converters.
Can the PG pin of LM60430ARPKR be pulled up to 3.3 V logic supply?
Yes, the PG pin of LM60430ARPKR can be safely pulled up to a 3.3 V logic supply using a 100 kΩ resistor. The PG pin is an open-drain NMOS output with RDS(on) ≤150 Ω when asserted low, and the datasheet explicitly permits pull-up to VCC, VOUT, or any compatible logic rail. Ensure the pull-up current remains <5 mA DC to avoid overstressing the internal FET.
What is the minimum inductor value recommended for LM60430ARPKR at 400 kHz operation?
The minimum recommended inductor value for LM60430ARPKR at 400 kHz is 1.0 µH, based on peak-to-peak ripple current ≤30% of full-scale output current and stability requirements. TI's reference design TIDA-01620 uses a 2.2 µH, 3.5 A shielded inductor (MPIM2012H2R2MT); values below 1.0 µH risk excessive ripple, reduced load-transient performance, and potential subharmonic oscillation due to insufficient energy storage per cycle.
Is LM60430ARPKR qualified for automotive applications?
LM60430ARPKR itself is not AEC-Q100 qualified; however, TI offers a pin-compatible AEC-Q100 Grade 1 qualified variant, LM60430QRPKRQ1, rated for –40°C to +125°C ambient and qualified to automotive reliability standards. For automotive designs requiring qualification, LM60430QRPKRQ1 must be specified; LM60430ARPKR is intended for industrial, medical, and test equipment where AEC-Q100 is not mandated.
LM60430ARPKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 13-PowerWFQFN
- 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):
- 3.8V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 24V
- Current - Output:
- 3A
- Frequency - Switching:
- 400kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 13-WQFN-HR (3x2)
LM60430ARPKR FAQ
1.How can I place an order for LM60430ARPKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM60430ARPKR 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 LM60430ARPKR reliable?
The price and inventory of LM60430ARPKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM60430ARPKR is usually 5 days.
3.What payment methods are accepted for LM60430ARPKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM60430ARPKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM60430ARPKR?
LM60430ARPKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM60430ARPKR 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 LM60430ARPKR?
For technical support, including LM60430ARPKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM60430ARPKR requirements.
6.How does Aetrix verify that LM60430ARPKR is sourced from the original manufacturer or authorized distributors?
All LM60430ARPKR 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 LM60430ARPKR meets industry standards.
7.What is the process for return or replacement of LM60430ARPKR?
All LM60430ARPKR units undergo pre-shipment inspection (PSI). If there is an issue with LM60430ARPKR, 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 LM60430ARPKR part is unused and in its original packaging.
Return procedure for LM60430ARPKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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