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Texas Instruments LMR16030SDDAR
- Part No.:
- LMR16030SDDAR
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMR16030SDDAR.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:499
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Product details
Overview
LMR16030SDDAR from Texas Instruments is a 60-V, 3-A synchronous step-down DC-DC converter with integrated 155-mΩ high-side MOSFET, 40-µA quiescent current, adjustable 200 kHz–2.5 MHz switching frequency, and soft-start functionality. It delivers regulated power in automotive battery regulation, industrial supplies, and telecom systems where wide input range and low standby power are critical.
For engineers reviewing the LMR16030SDDAR datasheet, LMR16030SDDAR pinout, LMR16030SDDAR application, or LMR16030SDDAR equivalent, key selection considerations include its HSOIC-8 PowerPAD™ package, precision enable input, internal compensation, 0.75-V feedback reference, and soft-start capacitor programmability for controlled output ramp-up.
Technical Context
The LMR16030SDDAR implements fixed-frequency peak current mode control with sleep-mode operation at light load to maintain efficiency. Its internal compensation eliminates external loop components, and the RT/SYNC pin supports both resistor-programmed frequency (200 kHz–2.5 MHz) and external clock synchronization (250 kHz–2.3 MHz).
It features a precision 0.75-V ±15 mV feedback reference over –40°C to +125°C, 97% maximum duty cycle enabled by bootstrap recharge circuitry, and cycle-by-cycle current limiting with thermal shutdown at 170°C. The soft-start version uses an internal 3-µA current source charging an external capacitor on the SS pin to control VOUT ramp time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.3 V to 60 V - supports direct connection to 12/24/48-V automotive and industrial bus rails without pre-regulation. |
| Output Current | 3 A continuous - sufficient for powering microcontrollers, FPGAs, sensors, and communication ICs in compact systems. |
| Quiescent Current | 40 µA - enables multi-year battery life in always-on monitoring or telematics applications. |
| Switching Frequency | 200 kHz to 2.5 MHz - allows trade-off between EMI filtering size (low fSW) and inductor/capacitor footprint (high fSW). |
| Feedback Reference | 0.75 V ±15 mV - sets output voltage via resistor divider; enables precise 3.3 V, 5 V, or custom outputs with minimal error. |
| High-Side RDS(on) | 155 mΩ typical - reduces conduction loss and thermal stress at full load, supporting >90% efficiency at 12 VIN/5 VOUT. |
| Soft-Start Control | External capacitor on SS pin - provides user-defined output voltage ramp time to prevent inrush current and downstream supply sequencing issues. |
Pinout & Package
LMR16030SDDAR is housed in an 8-pin HSOIC package with exposed thermal pad (4.89 mm × 3.90 mm), optimized for low thermal resistance (RθJC(bot) = 3.8 °C/W) and high-power density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply | Connects 0.1-µF ceramic capacitor to SW to generate gate drive voltage for high-side MOSFET. |
| VIN | Main power input | Accepts 4.3–60 V; requires local high-frequency bypass capacitor; shortest possible trace to GND minimizes noise. |
| EN | Enable control | Precision threshold (1.2 V typ); internal pullup allows floating-enable; supports UVLO hysteresis via external resistors. |
| RT/SYNC | Frequency control | Configurable as resistor-set oscillator (200 kHz–2.5 MHz) or external clock sync input (250 kHz–2.3 MHz). |
| FB | Feedback sense | Monitors output via resistor divider; 0.75-V reference enables accurate VOUT setting and stability across temperature. |
| SS | Soft-start timing | Internal 3-µA current charges external capacitor to linearly ramp FB voltage and control VOUT rise time. |
| GND | System ground | Signal and power return; must be connected to thermal pad for optimal thermal performance. |
| SW | Power switch node | Drives external inductor; connects internally to high-side MOSFET drain; requires tight layout to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 155-mΩ RDS(on) reduces BOM count and improves thermal performance vs. controller-only solutions. |
| Internal compensation | Eliminates need for external compensation network-simplifies design, shortens time-to-market, and ensures stability with common output capacitors. |
| Ultra-low IQ (40 µA) | Enables long-duration operation from coin cells or backup batteries in safety-critical or remote sensing applications. |
| Adjustable soft-start | Capacitor-programmable ramp prevents inrush into large output capacitance or downstream regulators during cold start. |
| Thermal & OVP protection | Auto-recovery thermal shutdown at 170°C and output overvoltage lockout protect load and IC under fault conditions. |
Applications
| Automotive Battery Regulation | Industrial Power Supplies |
|---|---|
Use Scenario: Regulating 12-V or 24-V vehicle battery rail to stable 3.3 V or 5 V for infotainment, ADAS cameras, or body control modules. IC Role / Device Role / Timing Role: Primary buck regulator delivering 3-A continuous power with ultra-low quiescent current to meet ISO 16750-2 cold-cranking and sleep-mode requirements. Use Value: 40-µA IQ extends battery life during extended parking; 60-V max input withstands load-dump transients up to 65 V. | Use Scenario: Providing isolated or non-isolated 5-V/3.3-V rails in PLC I/O modules, motor drives, or factory automation controllers. IC Role / Device Role / Timing Role: Main system power stage converting unregulated 24-V or 48-V industrial bus to logic-level voltages with high reliability and thermal robustness. Use Value: 97% max duty cycle supports operation near dropout; HSOIC PowerPAD™ enables conduction cooling on metal-core PCBs. |
| Telecom and Datacom Systems | General Purpose Wide VIN Regulation |
Use Scenario: Point-of-load conversion in base station radios, optical line terminals, or network switches requiring clean, efficient 12-V or 5-V rails. IC Role / Device Role / Timing Role: Secondary buck regulator synchronized to system clock via RT/SYNC pin to reduce conducted EMI in dense board layouts. Use Value: External clock sync (250 kHz–2.3 MHz) avoids beat frequencies; internal slope compensation ensures stable CCM/PCCM operation. | Use Scenario: Universal input power solution for test equipment, medical monitors, or portable instrumentation accepting 12–48-V adapters or batteries. IC Role / Device Role / Timing Role: Single-chip step-down solution eliminating need for external MOSFETs, drivers, or compensation components. Use Value: Internal compensation and soft-start reduce design iterations; 8-pin HSOIC fits space-constrained enclosures while enabling thermal relief via exposed pad. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14030SDDAR | 40-V max input, same 3-A rating, 45-µA IQ, identical HSOIC-8 package and pinout. | Better suited for 12/24-V only systems; lacks 60-V capability for industrial/automotive transients. | Select when input never exceeds 40 V and cost sensitivity outweighs transient margin. |
| LM76003PWR | 60-V, 3.5-A, 2.2-MHz synchronous buck; 20-µA IQ; 16-pin WQFN with wettable flanks. | Higher current, higher frequency, lower IQ, but requires different layout, thermal management, and compensation. | Choose for next-gen designs needing higher efficiency at light load or smaller magnetics; not drop-in compatible. |
Compared with LMR14030SDDAR, LMR16030SDDAR adds 20-V input headroom critical for automotive load dump; compared with LM76003PWR, it trades higher IQ and lower max frequency for proven HSOIC reliability and simpler layout-ideal for cost-sensitive, thermally constrained legacy platforms.
Availability
LMR16030SDDAR is available at Aetrix Electronics and suitable for automotive battery regulation, industrial power supplies, and telecom systems requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for LMR16030SDDAR 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 DC-DC conversion.
The LMR16030SDDAR belongs to TI's SIMPLE SWITCHER® family-designed specifically for ease-of-use, rugged wide-input operation, and minimal external component count in automotive, industrial, and communications power systems.
FAQ
What is the maximum input voltage rating for the LMR16030SDDAR?
The LMR16030SDDAR has an absolute maximum input voltage rating of 65 V on the VIN pin, with recommended continuous operation up to 60 V. This 60-V rating enables reliable use in 48-V industrial systems and automotive applications subject to load-dump transients, as confirmed in Section 6.1 Absolute Maximum Ratings of the official datasheet.
Does the LMR16030SDDAR require external compensation components?
No, the LMR16030SDDAR features fully internal loop compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces bill-of-materials count, and ensures stable operation across a wide range of output capacitors-verified in Section 7.3.1 and Figure 7-2 of the datasheet.
How is soft-start configured on the LMR16030SDDAR?
The LMR16030SDDAR uses an external capacitor connected from the SS pin to GND to set soft-start time. An internal 3-µA current source charges this capacitor, generating a linear ramp on the feedback node. Soft-start duration is calculated as tSS = (CSS × 0.75 V) / 3 µA, per Section 7.3.7 of the datasheet.
What package type and thermal characteristics does the LMR16030SDDAR use?
The LMR16030SDDAR is packaged in an 8-pin HSOIC (DDA) with exposed thermal pad (4.89 mm × 3.90 mm). Its junction-to-board thermal resistance is 25.5 °C/W, and junction-to-case (bottom) is 3.8 °C/W-enabling effective heat transfer to PCB copper planes, as specified in Section 6.4 Thermal Information.
Can the LMR16030SDDAR synchronize to an external clock signal?
Yes, the LMR16030SDDAR supports clock synchronization via the RT/SYNC pin, accepting external square-wave inputs from 250 kHz to 2.3 MHz. The device locks to the falling edge of the external clock, disabling its internal oscillator-detailed in Section 6.6 Switching Characteristics and Section 7.3.8 of the datasheet.
LMR16030SDDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- 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):
- 4.3V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 50V
- Current - Output:
- 3A
- Frequency - Switching:
- 200kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
LMR16030SDDAR FAQ
1.How can I place an order for LMR16030SDDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16030SDDAR 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 LMR16030SDDAR reliable?
The price and inventory of LMR16030SDDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16030SDDAR is usually 5 days.
3.What payment methods are accepted for LMR16030SDDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16030SDDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16030SDDAR?
LMR16030SDDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16030SDDAR 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 LMR16030SDDAR?
For technical support, including LMR16030SDDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16030SDDAR requirements.
6.How does Aetrix verify that LMR16030SDDAR is sourced from the original manufacturer or authorized distributors?
All LMR16030SDDAR 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 LMR16030SDDAR meets industry standards.
7.What is the process for return or replacement of LMR16030SDDAR?
All LMR16030SDDAR units undergo pre-shipment inspection (PSI). If there is an issue with LMR16030SDDAR, 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 LMR16030SDDAR part is unused and in its original packaging.
Return procedure for LMR16030SDDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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