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Texas Instruments LMR16030SDDA
- Part No.:
- LMR16030SDDA
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMR16030SDDA.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:6,506
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Product details
Overview
LMR16030SDDA from Texas Instruments is a 60-V, 3-A synchronous step-down DC-DC converter with integrated high-side MOSFET (155-mΩ typical), 40-µA quiescent current in sleep mode, adjustable 200 kHz–2.5 MHz switching frequency, and precision enable input. It delivers regulated power in automotive battery regulation and industrial power supplies where wide input range and low standby power are critical.
For engineers reviewing the LMR16030SDDA datasheet, LMR16030SDDA pinout, LMR16030SDDA application, or LMR16030SDDA equivalent, key selection criteria include VIN range (4.3–60 V), output current capability (3 A continuous), thermal performance (RθJC(bot) = 3.8 °C/W), soft-start programmability via external capacitor, and synchronization support up to 2.3 MHz.
Technical Context
The LMR16030SDDA implements fixed-frequency peak current mode control with internal loop compensation, eliminating external compensation components. Its sleep mode reduces switching losses at light load by clamping COMP voltage at 400 mV and drawing only 40 µA IQ while maintaining regulation.
It supports high-duty-cycle operation (up to 97%) via bootstrap capacitor recharge circuitry and includes precision enable with adjustable UVLO hysteresis using external resistors. The SS pin provides programmable soft-start via external capacitor, and RT/SYNC enables either resistor-programmed frequency or external clock synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.3 V to 60 V - supports direct connection to 12/24/48 V automotive and industrial rails without pre-regulation. |
| Output Current | 3 A continuous - sufficient for powering microcontrollers, sensors, and communication ICs in embedded systems. |
| IQ (Sleep Mode) | 40 µA typical - enables multi-year battery life in always-on monitoring applications. |
| RDS(on) | 155 mΩ typical - minimizes conduction loss and thermal rise at full load. |
| fSW Range | 200 kHz to 2.5 MHz - allows trade-off between efficiency (lower fSW) and solution size (higher fSW). |
| VFB | 0.750 V ±0.015 V - sets output voltage with <1% accuracy using standard 1% resistors. |
| Shutdown IQ | 1 µA typical - extends battery life during system standby or deep sleep states. |
Pinout & Package
LMR16030SDDA uses an 8-pin HSOIC package (4.89 mm × 3.90 mm) with exposed thermal pad for low RθJC(bot) (3.8 °C/W), enabling high-power density without heatsinks in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply | Connects 0.1-µF ceramic capacitor to SW; supplies gate drive for high-side MOSFET during ON time. |
| VIN | Main power input | Accepts 4.3–60 V; requires short, low-inductance path to high-frequency input capacitor for EMI control. |
| EN | Enable control | Precision threshold (1.2 V typ); supports system sequencing and adjustable UVLO with external resistor divider. |
| 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 | Voltage feedback | 0.75-V reference node; connects to resistor divider to set output voltage with minimal error sensitivity. |
| SS | Soft-start control | Internal 3-µA current source charges external capacitor to ramp output voltage linearly and limit inrush current. |
| GND | System ground | Reference for all analog and power circuits; must be connected to PCB ground plane under thermal pad. |
| SW | Power switch node | Drives external inductor; high dv/dt node requiring tight layout and minimized parasitic inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 155-mΩ high-side MOSFET | Reduces BOM count and layout complexity while delivering 3-A output with minimal conduction loss. |
| Internal compensation | Eliminates need for external Type-II/III compensation network, accelerating design cycle and improving stability across capacitor types. |
| Programmable soft-start (SS pin) | Enables controlled output ramp-up via external capacitor, preventing inrush current damage to downstream loads and input capacitors. |
| 97% maximum duty cycle | Supports ultra-low dropout operation (e.g., 5 V out from 5.5 V in), extending usable input range in battery-depleted conditions. |
| Thermal, OVP, UVLO, and cycle-by-cycle current limit | Provides autonomous fault protection without external supervision, enhancing reliability in unattended industrial and automotive deployments. |
Applications
| Automotive Battery Regulation | Industrial Power Supplies |
|---|---|
Use Scenario: Regulating 12 V or 24 V vehicle battery rail to 3.3 V or 5 V for infotainment ECUs and ADAS sensors. IC Role / Device Role / Timing Role: Primary buck regulator providing stable, low-noise power with 40-µA sleep current to meet ISO 16750-2 quiescent current requirements. Use Value: Enables >10-year battery hold-up in parked vehicle mode without compromising cold-crank margin due to low IQ and high VIN tolerance. | Use Scenario: Converting 24–48 V factory floor power to 5 V/3.3 V for PLC I/O modules and motor drive controllers. IC Role / Device Role / Timing Role: Main point-of-load regulator handling transient loads up to 3 A with built-in overtemperature and overvoltage protection. Use Value: Delivers robust operation across -40°C to +125°C ambient with RθJC(bot) = 3.8 °C/W, reducing need for forced air cooling. |
| Telecom/Datacom Systems | General Purpose Wide VIN Regulation |
Use Scenario: Powering FPGA I/O banks and SerDes transceivers from 48 V telecom rectifier outputs. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter synchronized to system clock to minimize EMI in dense backplane designs. Use Value: Achieves >90% efficiency at 1 A load with 500 kHz fSW, and supports 2.3 MHz sync to avoid sensitive frequency bands. | Use Scenario: Universal input power stage for test equipment, medical devices, and portable instrumentation accepting 12–60 V inputs. IC Role / Device Role / Timing Role: Flexible buck controller supporting multiple output voltages via FB divider, with soft-start and enable sequencing for safe power-up. Use Value: Simplifies design reuse across platforms via single-footprint solution with programmable fSW, SS, and UVLO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14030SDDA | 40-V max input, same 3-A rating, identical 8-pin HSOIC package and pinout. | Suitable for lower-voltage industrial systems where 60-V rating is unnecessary; lower cost and smaller footprint not required. | Select when input never exceeds 40 V and cost optimization is prioritized over future-proofing. |
| LM76003PDDAR | 60-V, 3.5-A, 2.2-MHz synchronous converter; different pinout and no SS pin; requires external compensation. | Better suited for space-constrained, high-frequency designs needing higher current; lacks soft-start programmability. | Choose for new designs targeting >2-MHz operation and PCB area reduction, accepting added compensation design effort. |
Compared with LMR14030SDDA, LMR16030SDDA adds 20-V headroom for automotive transients and battery float charging; compared with LM76003PDDAR, it trades higher frequency and current for integrated soft-start, internal compensation, and proven layout simplicity in legacy designs.
Availability
LMR16030SDDA is available at Aetrix Electronics and suitable for automotive battery regulation, industrial power supplies, and telecom/datacom systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for LMR16030SDDA 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 LMR16030SDDA belongs to TI's SIMPLE SWITCHER® family-designed specifically for ease-of-use in wide-input industrial and automotive power applications, emphasizing integrated FETs, internal compensation, and robust protection features.
FAQ
What is the maximum input voltage rating for the LMR16030SDDA?
The LMR16030SDDA has an absolute maximum input voltage rating of 65 V and a recommended operating input range of 4.3 V to 60 V. This 60-V upper limit ensures reliable operation in 48-V industrial systems and 12/24-V automotive applications with load dump transients. Exceeding 60 V during normal operation risks violating recommended conditions, though the device withstands brief 65-V stress per absolute maximum ratings.
Does the LMR16030SDDA require external compensation components?
No, the LMR16030SDDA 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 improves stability across varied output capacitor ESR and capacitance values-confirmed in TI's datasheet Section 7.3.1 and typical application schematics.
How is soft-start configured on the LMR16030SDDA?
The LMR16030SDDA uses its SS pin with an external capacitor to configure soft-start: an internal 3-µA current source charges the capacitor, generating a linear ramp on the FB node. Soft-start time tSS (ms) = (CSS in nF × 0.75 V) / 3, per Equation 4 in the datasheet. This prevents inrush current during power-up and is reset automatically during shutdown or thermal fault.
What thermal performance metrics are specified for the LMR16030SDDA in HSOIC package?
The LMR16030SDDA in DDA (HSOIC-8 with PowerPAD™) package specifies RθJC(bot) = 3.8 °C/W and RθJA = 42.5 °C/W. The low junction-to-case (bottom) resistance enables efficient heat transfer to the PCB ground plane, allowing 3-A continuous operation at +85°C ambient without heatsinks when using ≥2 oz copper and adequate thermal vias under the exposed pad.
Can the LMR16030SDDA synchronize to an external clock, and what are the valid frequency and voltage levels?
Yes, the LMR16030SDDA supports synchronization via its RT/SYNC pin across 250 kHz to 2.3 MHz. Valid clock signals require VHIGH ≥ 1.7 V, VLOW ≤ 0.5 V, and minimum pulse width ≥30 ns. The internal PLL locks within 100 µs, and loss of sync reverts the device to resistor-programmed mode automatically-detailed in Section 6.6 and Figure 7-5 of the datasheet.
LMR16030SDDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
LMR16030SDDA FAQ
1.How can I place an order for LMR16030SDDA through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16030SDDA 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 LMR16030SDDA reliable?
The price and inventory of LMR16030SDDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16030SDDA is usually 5 days.
3.What payment methods are accepted for LMR16030SDDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16030SDDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16030SDDA?
LMR16030SDDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16030SDDA 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 LMR16030SDDA?
For technical support, including LMR16030SDDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16030SDDA requirements.
6.How does Aetrix verify that LMR16030SDDA is sourced from the original manufacturer or authorized distributors?
All LMR16030SDDA 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 LMR16030SDDA meets industry standards.
7.What is the process for return or replacement of LMR16030SDDA?
All LMR16030SDDA units undergo pre-shipment inspection (PSI). If there is an issue with LMR16030SDDA, 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 LMR16030SDDA part is unused and in its original packaging.
Return procedure for LMR16030SDDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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