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Texas Instruments LM60430DRPKR
- Part No.:
- LM60430DRPKR
- Manufacturer:
- Texas Instruments
- Package:
- 13-PowerWFQFN
- Datasheet:
-
LM60430DRPKR.pdf
- Description:
- IC REG BUCK ADJ 3A 13WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,603
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Product details
Overview
LM60430DRPKR from Texas Instruments is a 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 adjustable output voltage (1 V to 24 V) at up to 3 A continuous load, operates at 1 MHz switching frequency, achieves >95% peak efficiency, and supports rugged industrial applications including servo drive control modules and PLC power rails.
For engineers reviewing the LM60430DRPKR datasheet, LM60430DRPKR pinout, LM60430DRPKR application, or LM60430DRPKR equivalent, key selection considerations include its 1-MHz fixed-frequency operation, 25 µA quiescent current in PFM mode, thermal performance enabled by the DAP-connected PGND pad, and functional safety documentation support for industrial safety-critical designs.
Technical Context
The LM60430DRPKR uses peak-current-mode control with automatic PWM-to-PFM transition to maintain high efficiency across 10 mA–3 A loads. Its internal 5-V LDO powers control circuitry, while the open-drain PG flag provides regulated output monitoring with 105–110% rising threshold and 60–170 µs glitch filtering.
It integrates high-side and low-side MOSFETs with RDS(on) of 76–146 mΩ and 51–96 mΩ respectively, supports dropout as low as 150 mV at 1 A, and features valley current limiting (2.9–4.1 A), hiccup-mode short-circuit protection (94 ms off-time), and thermal shutdown at 165°C with 148°C recovery.
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 - rated for sustained load in servo drives and industrial PCs with thermal management via DAP pad. |
| Switching Frequency | 1 MHz (D-version) - enables compact magnetics and reduces solution size vs. 400 kHz variants; fixed-frequency PWM operation. |
| Feedback Reference | 1.0 V ±1.5% - sets output voltage via external resistor divider; enables precise regulation from 1 V to 24 V. |
| Quiescent Current | 25 µA typical in PFM - extends battery life in always-on industrial sensors and low-power instrumentation. |
| Thermal Resistance | RθJB = 15.3 °C/W - low junction-to-board resistance enables high power density on standard 4-layer PCBs with thermal vias. |
| EMI Performance | CISPR-22 Class 5 compliant - achieved via minimized switch-node ringing and symmetrical VIN/PGND layout in WQFN package. |
Pinout & Package
LM60430DRPKR is housed in a 3.0 mm × 2.0 mm, 13-pin WQFN package with wettable flanks and an exposed thermal pad (DAP) connected internally to PGND. The package supports automated optical inspection (AOI) and enhances thermal dissipation through soldered DAP-to-ground copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | PGND | Power ground return path for high-current switching loop; must be connected directly to system ground and AGND with low-inductance traces. |
| 2, 10 | VIN | Main input supply (3.8–36 V); requires local high-quality bypass capacitor to PGND for EMI suppression and transient response. |
| 3, 12 | SW | Switch node connecting internal HS/LS FETs to external inductor; critical for EMI and efficiency-minimize trace area and length. |
| 4 | BOOT | Bootstrap supply for HS gate driver; requires 100-nF ceramic capacitor between BOOT and SW pins. |
| 5 | VCC | Internal 5-V LDO output; powers control logic-must use 1-µF capacitor to AGND; not for external loading. |
| 6 | AGND | Analog ground reference for feedback and internal references; connect to system ground at single point near FB pin. |
| 7 | FB | Resistor-divider feedback input; senses output voltage-connect directly to VOUT divider tap; never float or short. |
| 8 | PG | Open-drain power-good flag; pulls low during fault, startup, or EN=low; requires external pullup resistor (e.g., 100 kΩ to VOUT). |
| 9 | EN | Enable input with precision thresholds (1.231 V typ ON, 1.131 V typ OFF); can be tied directly to VIN if UVLO not required. |
| 13 | DAP | Exposed thermal pad tied to PGND; primary heat conduction path-must be soldered to large ground copper area with ≥6 thermal vias. |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety Documentation Support | Includes FIT data, failure mode analysis, and safety manual-enables IEC 61508 SIL-2 and ISO 13849 PL d system-level certification. |
| Ultra-Small WQFN-13 with Wettable Flanks | 3.0 mm × 2.0 mm footprint enables <100 mm² total solution size; wettable flanks allow reliable AOI and solder-joint inspection. |
| Peak-Current-Mode Control with Auto PFM/PWM | Eliminates need for external compensation; maintains >90% efficiency at 10 mA (12 VIN/5 VOUT) while ensuring stable regulation at full load. |
| Low-EMI Layout Optimized | Symmetrical VIN/PGND pin placement cancels magnetic fields; enhanced QFN minimizes parasitic inductance-reduces radiated emissions without shielding. |
| Robust Protection Suite | Includes hiccup-mode short-circuit (94 ms off-time), thermal shutdown (165°C), valley current limit (2.9–4.1 A), and bootstrap UVLO (2.2 V). |
Applications
| Industrial PLC Power Rail | Servo Drive Control Module |
|---|---|
|
Use Scenario: Provides clean, regulated 5 V or 3.3 V power to microcontrollers, I/O isolators, and communication interfaces inside programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 3-A output with fast transient response to handle burst logic loads and CAN bus activity. Use Value: 1-MHz operation enables small 1.5-µH inductors; 25 µA quiescent current reduces standby losses; thermal robustness ensures reliability at 85°C ambient. |
Use Scenario: Supplies isolated gate-driver bias and MCU core voltage in servo motor control units requiring high immunity to EMI from PWM-driven motors. IC Role / Device Role / Timing Role: Synchronous step-down converter generating 12 V or 15 V for gate drivers and 3.3 V for position encoder interfaces. Use Value: CISPR-22 Class 5 compliance eliminates need for external EMI filters; wettable-flank WQFN ensures solder joint reliability under vibration. |
| Medical Instrumentation Supply | Industrial PC (IPC) Point-of-Load |
|
Use Scenario: Powers analog front-end signal conditioning, ADC reference, and low-noise sensor interfaces in portable diagnostic equipment where low noise and low standby power are critical. IC Role / Device Role / Timing Role: High-efficiency, low-IQ DC/DC converter delivering tightly regulated 3.3 V or 5 V from 12 V or 24 V battery or adapter input. Use Value: 90% PFM efficiency at 10 mA extends battery runtime; 1.0 V ±1.5% reference enables <±1% output accuracy over temperature. |
Use Scenario: Generates 5 V or 3.3 V for CPU I/O, USB hubs, and display controllers in fanless industrial PCs deployed in dusty, high-temperature enclosures. IC Role / Device Role / Timing Role: Compact, thermally efficient point-of-load regulator replacing larger discrete solutions in space-constrained IPC motherboards. Use Value: RθJB = 15.3 °C/W allows full 3-A operation on 2-oz copper with 6 thermal vias; DAP pad simplifies thermal design without heatsinks. |
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 |
|---|---|---|---|
| LM60430ARPKR | Same WQFN-13 package and 3-A rating, but 400 kHz switching frequency instead of 1 MHz. | Better suited for noise-sensitive analog circuits where lower switching frequency reduces EMI risk; requires larger inductor (e.g., 2.2 µH vs. 1.5 µH). | Select when EMI constraints outweigh size requirements, or when legacy 400 kHz layout reuse is prioritized. |
| TPS543320RTWR | 3.5-A, 1-MHz buck with PMBus interface, higher RDS(on) (120 mΩ HS), and no integrated PG flag. | Targets digitally controlled power systems needing telemetry and sequencing; lacks dedicated power-good output for simple reset signaling. | Choose only if digital monitoring, margining, or multi-rail coordination is required-otherwise LM60430DRPKR offers simpler analog implementation. |
Compared with LM60430ARPKR, the LM60430DRPKR trades slightly higher EMI risk for smaller passive components and faster transient response; versus TPS543320RTWR, it delivers plug-and-play analog regulation with integrated PG and lower thermal resistance, avoiding firmware dependencies.
Availability
LM60430DRPKR is available at Aetrix Electronics and suitable for industrial PLC power rails, servo drive control modules, and medical instrumentation requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LM60430DRPKR 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 and embedded processing technologies, with decades of expertise in power management ICs for industrial, automotive, and medical markets.
The LM604x0 product line was designed specifically for ultra-compact, high-reliability DC/DC conversion in space-constrained industrial equipment-emphasizing low EMI, thermal resilience, and functional safety readiness.
FAQ
What is the maximum output voltage supported by the LM60430DRPKR?
The LM60430DRPKR supports an adjustable output voltage range from 1 V to 24 V, set by an external resistor divider connected to the FB pin. The internal 1.0 V reference and ±1.5% tolerance enable accurate regulation across this full range, provided the input voltage remains within the 3.8 V–36 V operating window and sufficient headroom exists for dropout.
Does the LM60430DRPKR require external compensation components?
No, the LM60430DRPKR features fully internal loop compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies PCB layout, reduces bill-of-materials count, and accelerates design validation-especially beneficial for high-volume industrial applications where time-to-market and layout reliability are critical.
How does the power-good (PG) flag behave during startup and fault conditions for the LM60430DRPKR?
The LM60430DRPKR's open-drain PG pin asserts high after ~4 ms from EN assertion, once output voltage reaches 95% of target. It pulls low during startup, thermal shutdown, current-limit hiccup, or EN deactivation. A 60–170 µs internal glitch filter prevents false triggering during transients, and PG remains valid down to 2 V input even when EN is low.
Can the LM60430DRPKR operate with an input voltage below 3.8 V?
No-the absolute minimum recommended input voltage for the LM60430DRPKR is 3.8 V. Operation below this level risks improper startup, unstable regulation, or failure to maintain output voltage under load. The device's architecture is optimized for industrial 12 V/24 V/36 V rails, and attempting sub-3.8 V operation violates the specified operating conditions in the datasheet.
What thermal design practices are recommended for the LM60430DRPKR in high-ambient environments?
For reliable operation above 70°C ambient, the LM60430DRPKR requires the DAP pad to be soldered to a minimum 100 mm² copper area on the PCB with ≥6 thermal vias (0.3 mm diameter, filled or plated) connecting to inner or back-side ground planes. Avoid thermal relief on DAP connections, and ensure adjacent components do not obstruct airflow over the package top surface.
LM60430DRPKR 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:
- 1MHz
- 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)
LM60430DRPKR FAQ
1.How can I place an order for LM60430DRPKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM60430DRPKR 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 LM60430DRPKR reliable?
The price and inventory of LM60430DRPKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM60430DRPKR is usually 5 days.
3.What payment methods are accepted for LM60430DRPKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM60430DRPKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM60430DRPKR?
LM60430DRPKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM60430DRPKR 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 LM60430DRPKR?
For technical support, including LM60430DRPKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM60430DRPKR requirements.
6.How does Aetrix verify that LM60430DRPKR is sourced from the original manufacturer or authorized distributors?
All LM60430DRPKR 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 LM60430DRPKR meets industry standards.
7.What is the process for return or replacement of LM60430DRPKR?
All LM60430DRPKR units undergo pre-shipment inspection (PSI). If there is an issue with LM60430DRPKR, 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 LM60430DRPKR part is unused and in its original packaging.
Return procedure for LM60430DRPKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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