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Texas Instruments LMR14030SQDPRTQ1
- Part No.:
- LMR14030SQDPRTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WDFN Exposed Pad
- Datasheet:
-
LMR14030SQDPRTQ1.pdf
- Description:
- IC REG BUCK ADJ 3.5A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:404
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Product details
Overview
LMR14030SQDPRTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 40V input, 3.5A synchronous step-down DC-DC converter with integrated 90mΩ high-side MOSFET, 40µA quiescent current in sleep mode, 75ns minimum on-time, and adjustable 200kHz–2.5MHz switching frequency. It delivers regulated power in battery-fed vehicle subsystems such as infotainment head units and ADAS camera modules.
For engineers reviewing the LMR14030SQDPRTQ1 datasheet, LMR14030SQDPRTQ1 pinout, LMR14030SQDPRTQ1 application, or LMR14030SQDPRTQ1 equivalent, key selection considerations include its ultra-low IQ for always-on systems, spread-spectrum EMI reduction capability, precision enable threshold (1.2V typ), internal loop compensation, and thermal shutdown at 170°C - all validated for –40°C to 125°C ambient operation.
Technical Context
The LMR14030SQDPRTQ1 implements fixed-frequency peak current mode control with slope compensation to ensure stability at >50% duty cycles. Its Sleep-mode dynamically reduces switching activity below 300mA peak inductor current, maintaining 40µA IQ while preserving regulation via COMP voltage clamping and recovery.
It supports high-duty-cycle operation up to ~97% via bootstrap capacitor recharge circuitry, enabling low-dropout regulation down to VIN − VOUT ≈ 0.3V at full load. Frequency programming uses RT resistor (e.g., 11.5kΩ for 1.912MHz), and synchronization accepts external clocks from 250kHz to 2.3MHz with PLL lock-in time of 100µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 40V - supports direct connection to automotive battery (cold-crank down to 4V) and wide industrial rails. |
| Output Current | 3.5A continuous - sufficient for powering multi-rail SoCs, radar processors, or display controllers in automotive ECUs. |
| Quiescent Current | 40µA in sleep mode - enables >1-year battery hold-up in parked-vehicle applications without excessive drain. |
| Switching Frequency | 200kHz–2.5MHz adjustable - allows trade-off between efficiency (low fSW) and solution size (high fSW). |
| High-Side RDS(on) | 90mΩ typical - minimizes conduction loss at 3.5A, supporting >90% efficiency at 12V→5V/3A. |
| Min. On-Time | 75ns - enables high step-down ratios (e.g., 24V→3.3V) at 2.2MHz without pulse-skipping instability. |
| Feedback Reference | 0.750V ±1.5% over –40°C to 125°C - ensures accurate output voltage setting across automotive temperature range. |
| Thermal Shutdown | 170°C with 12°C hysteresis - protects die during sustained overload or poor PCB thermal design. |
Pinout & Package
LMR14030SQDPRTQ1 is packaged in an 8-pin HSOIC (DDA) with exposed PowerPAD™ thermal pad (4.9mm × 6mm). The package enables low thermal resistance (RθJA = 43.2°C/W) and robust automotive-grade solder joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply | Connects 0.1µF ceramic capacitor to SW; supplies gate drive for high-side MOSFET during ON phase. |
| VIN | Main power input | Accepts 4–40V; requires local high-frequency bypass (CIN) with minimal trace inductance to GND. |
| EN | Enable control | Logic-level input with 1.2V threshold and internal 1µA pull-up; supports system UVLO via external resistor divider. |
| RT/SYNC | Freq. programming or sync input | Configurable: resistor-to-GND sets fSW, or external clock (250kHz–2.3MHz) synchronizes switching edges. |
| FB | Voltage feedback | Connects to resistive divider; regulates output by comparing VOUT×RFBB/(RFBB+RFBT) to 0.75V reference. |
| SS | Soft-start control | External capacitor (CSS) sets ramp time; internal 3µA current source charges CSS to limit inrush current. |
| GND | System ground | Reference for all analog and power circuits; must be connected to large copper pour under thermal pad. |
| SW | Power switch node | Drives external inductor; high dv/dt node requiring tight layout and minimized loop area with BOOT/CBOOT. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, HBM ±2kV, CDM ±750V - meets automotive functional safety readiness requirements. |
| Spread-spectrum EMI reduction | ±6% frequency dithering around center frequency - lowers peak radiated emissions without adding external filters. |
| Internal loop compensation | Eliminates need for external compensation network - reduces BOM count and design iteration time for stable operation. |
| Precision enable with UVLO hysteresis | 1.2V enable threshold with programmable hysteresis using external resistors - enables reliable power sequencing and brown-out protection. |
| Ultra-low shutdown current | 1µA max at VEN = 0V - extends battery life in dormant vehicle states beyond typical 10µA competitors. |
| Thermal, OVP, and cycle-by-cycle current limit | Comprehensive fault protection including 170°C thermal shutdown, output overvoltage clamp, and per-cycle current sensing - prevents damage during short-circuit or overload events. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powering 5V/3A SoC, display interface, and audio codec in head unit with cold-crank resilience. IC Role / Device Role / Timing Role: Primary buck regulator converting 9–16V battery to stable 5V rail; handles transient dips to 4V during cranking. Use Value: 40µA sleep current preserves battery during vehicle off-state; 75ns min on-time supports 2.2MHz switching for compact 2.2µH inductor. | Use Scenario: Generating 3.3V/2A supply for image sensor, ISP, and serializer in rear-view camera ECU. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with spread-spectrum EMI control to avoid interference with video signal integrity. Use Value: Internal compensation eliminates tuning effort; 90mΩ RDS(on) sustains >92% efficiency at 12V→3.3V/2A, reducing thermal load in sealed housing. |
| Industrial PLC I/O Module | Telecom Remote Radio Unit |
Use Scenario: Providing isolated 5V/1.5A auxiliary rail for digital I/O conditioning and CAN transceiver in DIN-rail controller. IC Role / Device Role / Timing Role: Wide-input buck converter accepting 12–36V DC field power; synchronized to system clock to reduce conducted noise coupling. Use Value: RT/SYNC pin enables deterministic switching alignment with master clock; 40V abs max rating withstands 36V surge transients. | Use Scenario: Regulating 24V backplane to 5V/3A for FPGA, RF front-end bias, and monitoring MCU in outdoor base station radio. IC Role / Device Role / Timing Role: High-reliability DC-DC stage operating continuously at 60°C ambient; thermal pad soldered to 2oz copper plane. Use Value: RθJC(bot) = 7.8°C/W enables 3.5A operation with <30°C junction rise; AEC-Q100 qualification adds confidence for extended field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14020SQDDARQ1 | 2A output current, same 8-pin HSOIC package and pinout, identical features except lower current rating and 120mΩ RDS(on). | Suitable for lower-power domains (e.g., sensor hubs, gateway MCUs) where 3.5A headroom is unnecessary. | Select when cost-sensitive designs require footprint compatibility but do not need full 3.5A capability. |
| LMR14050SQDPRRQ1 | 5A output, 10-pin WSON package (4mm×4mm), same feature set including spread spectrum and SYNC, but different pin count and layout. | Required for higher-current loads like radar processors or multi-core domain controllers needing >3.5A. | Choose when scaling power delivery without changing control architecture - verify PCB redesign for WSON-10 footprint and thermal pad. |
Compared with LMR14020SQDDARQ1, the LMR14030SQDPRTQ1 provides 75% higher output current in identical packaging; versus LMR14050SQDPRRQ1, it offers smaller solution size and lower cost for mid-power applications where 5A is excessive - making it the optimal balance of performance, footprint, and thermal margin in 3–4A automotive domains.
Availability
LMR14030SQDPRTQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and industrial PLC I/O modules requiring stable component supply with AEC-Q100 compliance and long-term production support.
Supply support for LMR14030SQDPRTQ1 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 delivering analog, embedded processing, and connectivity solutions for automotive, industrial, and personal electronics markets.
The LMR14030SQDPRTQ1 belongs to TI's SIMPLE SWITCHER® automotive power converter family, engineered specifically for robust, low-EMI, high-efficiency DC-DC conversion in harsh-temperature vehicle environments - emphasizing ease of use, minimal external components, and AEC-Q100 reliability.
FAQ
What is the maximum input voltage rating for the LMR14030SQDPRTQ1?
The LMR14030SQDPRTQ1 has an absolute maximum input voltage rating of 44V on the VIN pin, with recommended continuous operation from 4V to 40V. This 40V upper limit ensures safe operation across automotive battery transients including load dump (up to 40V per ISO 7637-2 Pulse 5a), and supports industrial 36V nominal systems with margin.
Does the LMR14030SQDPRTQ1 support synchronization to an external clock?
Yes, the LMR14030SQDPRTQ1 supports external clock synchronization via the RT/SYNC pin. When driven with a square wave between 250kHz and 2.3MHz, the device locks its internal PLL to the external clock edge (falling edge), enabling deterministic switching alignment. This capability is confirmed in Section 5.6 and Figure 6-5 of the official datasheet for LMR14030SQDPRTQ1.
What package type and thermal characteristics does the LMR14030SQDPRTQ1 use?
The LMR14030SQDPRTQ1 uses an 8-pin HSOIC (DDA) package with PowerPAD™ thermal pad (4.9mm × 6mm). Its thermal metrics include RθJA = 43.2°C/W and RθJC(bot) = 7.8°C/W, enabling 3.5A operation with ≤30°C junction rise above ambient when mounted on a 2oz copper PCB with adequate thermal vias - verified in Section 5.4 of the LMR14030SQDPRTQ1 datasheet.
How is output voltage adjusted on the LMR14030SQDPRTQ1?
Output voltage is set using a resistive divider from VOUT to the FB pin, referenced to an internal 0.750V ±1.5% bandgap. For example, to achieve 5.0V output, use RFBB = 10kΩ and RFBT = 56.7kΩ (per Equation 1 in the LMR14030SQDPRTQ1 datasheet). Divider current should be 50–100µA; values outside 10kΩ–100kΩ range risk noise susceptibility or accuracy loss.
What protection features are integrated into the LMR14030SQDPRTQ1?
The LMR14030SQDPRTQ1 integrates thermal shutdown (170°C, 12°C hysteresis), output overvoltage protection (OVP), input undervoltage lockout (UVLO with 3.7V rising threshold), cycle-by-cycle current limiting, and short-circuit protection with frequency foldback. These are documented in Sections 1, 3, and 6.3 of the official LMR14030SQDPRTQ1 datasheet and validated per AEC-Q100 stress testing.
LMR14030SQDPRTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 10-WDFN Exposed Pad
- 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):
- 4V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 28V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 200kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (4x4)
LMR14030SQDPRTQ1 FAQ
1.How can I place an order for LMR14030SQDPRTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR14030SQDPRTQ1 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 LMR14030SQDPRTQ1 reliable?
The price and inventory of LMR14030SQDPRTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR14030SQDPRTQ1 is usually 5 days.
3.What payment methods are accepted for LMR14030SQDPRTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR14030SQDPRTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR14030SQDPRTQ1?
LMR14030SQDPRTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR14030SQDPRTQ1 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 LMR14030SQDPRTQ1?
For technical support, including LMR14030SQDPRTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR14030SQDPRTQ1 requirements.
6.How does Aetrix verify that LMR14030SQDPRTQ1 is sourced from the original manufacturer or authorized distributors?
All LMR14030SQDPRTQ1 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 LMR14030SQDPRTQ1 meets industry standards.
7.What is the process for return or replacement of LMR14030SQDPRTQ1?
All LMR14030SQDPRTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMR14030SQDPRTQ1, 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 LMR14030SQDPRTQ1 part is unused and in its original packaging.
Return procedure for LMR14030SQDPRTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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