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Texas Instruments LMR16006YQ5DDCTQ1
- Part No.:
- LMR16006YQ5DDCTQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR16006YQ5DDCTQ1.pdf
- Description:
- IC REG BUCK 5V 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,279
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Product details
Overview
LMR16006YQ5DDCTQ1 from Texas Instruments is an automotive-grade synchronous buck DC-DC regulator delivering up to 600 mA output current with fixed 5 V output, 2.1 MHz switching frequency, 0.765 V feedback reference, and AEC-Q100 Grade 1 qualification (–40°C to +125°C). It operates from 4 V to 40 V input, supports 97% duty cycle, and integrates internal compensation and soft-start for battery-powered automotive power conditioning.
For engineers reviewing the LMR16006YQ5DDCTQ1 datasheet, LMR16006YQ5DDCTQ1 pinout, LMR16006YQ5DDCTQ1 application, or LMR16006YQ5DDCTQ1 equivalent, key selection considerations include its ECO mode quiescent current (28 µA), shutdown current (1 µA), thermal shutdown threshold (170°C), overvoltage transient protection (OVTP), and SOT-6L package compatibility with space-constrained automotive modules.
Technical Context
The LMR16006YQ5DDCTQ1 implements constant-frequency peak current-mode control with internal slope compensation and leading-edge blanking to ensure stable regulation under line/load transients. Its integrated high-side MOSFET features 900 mΩ RDS(on) and is driven via a bootstrap capacitor (CB–SW), monitored by a dedicated UVLO circuit enabling reliable high-duty-cycle operation.
It uses a 0.765 V precision internal voltage reference and error amplifier to regulate output via external FB divider; the fixed 5 V version eliminates R1/R2 selection while retaining full adjustability in the LMR16006YQ variant. Thermal shutdown (170°C trip, 160°C hysteresis) and cycle-by-cycle current limiting (1200–1700 mA peak) provide robust fault protection without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 40 V - supports wide automotive battery range including cold-crank (4 V) and load-dump transients (65 V absolute max). |
| Output Voltage | Fixed 5 V ±3% - factory-trimmed for precision; no external resistors required for standard 5 V rail generation. |
| Max Output Current | 600 mA - sufficient for MCU cores, sensors, CAN transceivers, and infotainment subsystems in compact modules. |
| Switching Frequency | 2.1 MHz (1785–2415 kHz) - enables use of small 6.8 µH inductors and 10 µF ceramic output capacitors, reducing solution size. |
| Quiescent Current | 28 µA in ECO mode - extends battery life in always-on vehicle modules (e.g., telematics, alarm systems) during light-load sleep states. |
| Feedback Reference | 0.765 V (±1.8%) - sets output accuracy and stability margin; used directly in adjustable versions via R1/R2 divider. |
| Thermal Shutdown | 170°C trip / 10°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
The LMR16006YQ5DDCTQ1 is housed in a thermally enhanced 6-pin SOT-6L (DDC) package measuring 2.9 mm × 1.6 mm × 1.0 mm, optimized for low-profile automotive PCBs with minimal thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CB | Bootstrap bias supply | Connects external 100 nF ceramic capacitor to SW; supplies gate drive voltage for internal high-side MOSFET. |
| GND | Power ground reference | Primary return path for input, output, and internal control circuits; must be low-impedance connection to minimize noise. |
| FB | Feedback input | Monitors output voltage via internal 0.765 V reference; unused in fixed-5V version but retained for compatibility. |
| SHDN | Enable/disable control | High-voltage tolerant (≤60 V); pull below 1.25 V to disable; floating or ≥1.25 V enables regulator with 1 µA shutdown current. |
| VIN | Main power input | Supplies internal bias and drives high-side MOSFET drain; accepts 4–40 V with transient rating up to 65 V. |
| SW | Switch node | Connects to inductor, Schottky diode cathode, and CB capacitor; carries high dv/dt switching waveform requiring tight layout. |
Key Features
| Feature | Design Value |
|---|---|
| ECO Mode Efficiency Optimization | Reduces quiescent current to 28 µA at light loads (<80 mA peak inductor current), improving efficiency in standby without burst-mode noise. |
| Integrated Boot Diode & Refresh Logic | Eliminates external boot diode; internal circuit refreshes CB capacitor during dropout or light-load conditions to sustain >97% duty cycle. |
| Overvoltage Transient Protection (OVTP) | Clamps high-side switch when FB exceeds 108% of 0.765 V reference, limiting output overshoot during fast unload transients with low-Cout designs. |
| AEC-Q100 Grade 1 Qualification | Validated for automotive operation from –40°C to +125°C junction temperature, including HTOL, temperature cycling, and ESD (HBM ±2 kV, CDM ±500 V). |
| Internal Soft-Start & Compensation | Prevents inrush current during startup; eliminates need for external compensation network or SS capacitor in most applications. |
Applications
| Automotive Infotainment Power | Telematics Control Unit (TCU) |
|---|---|
|
Use Scenario: Powers display interface ICs, audio codecs, and GPS receivers in head units with variable battery input (9–16 V) and strict EMI limits. IC Role / Device Role / Timing Role: Primary 5 V buck regulator supplying clean, low-noise power with 2.1 MHz switching to avoid AM band interference. Use Value: Fixed 5 V output eliminates resistor tolerance errors; ECO mode maintains <30 µA system sleep current for ISO 8859-3 compliance. |
Use Scenario: Supplies 5 V to cellular modem, GNSS module, and CAN controller in connected vehicle gateways operating continuously on vehicle battery. IC Role / Device Role / Timing Role: High-reliability DC-DC converter with thermal shutdown and OVTP protecting against hot ambient and sudden load removal. Use Value: 170°C thermal trip prevents field failure; 65 V transient rating handles load-dump events without external TVS clamping. |
| Aftermarket Dash Camera Module | Industrial Vehicle Telemetry Sensor Hub |
|
Use Scenario: Powers image sensor, video encoder, and microSD interface in compact dash cams mounted behind rearview mirrors. IC Role / Device Role / Timing Role: Space-constrained 5 V power source using SOT-6L package and minimal external components (6.8 µH inductor, 10 µF Cout). Use Value: 2.1 MHz operation allows ultra-small magnetics; internal soft-start prevents SD card initialization failures during cold start. |
Use Scenario: Provides regulated 5 V to vibration, temperature, and pressure sensors in heavy-duty truck telematics boxes exposed to wide temperature swings. IC Role / Device Role / Timing Role: Automotive-qualified buck regulator supporting extended temperature range (–40°C to +125°C) and long-term reliability in sealed enclosures. Use Value: AEC-Q100 Grade 1 certification ensures qualification for mission-critical fleet monitoring; 28 µA ECO current extends backup battery runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14006Q5DDARQ1 | Higher input voltage (40 V vs. 40 V same), same 600 mA output, but 400 kHz–2.5 MHz adjustable frequency and external compensation. | Requires external loop compensation and frequency setting resistors; better for noise-sensitive or EMI-tuned designs. | Select when adjustable frequency or custom loop response is needed; not drop-in due to different pinout and compensation requirements. |
| TPS54360BQDDAQ1 | Same AEC-Q100 Grade 1, 60 V input, 3.5 A output, but larger SOIC-8 package and higher quiescent current (145 µA in Eco-mode). | Supports higher current loads and wider VIN range; less suitable for ultra-low-power always-on modules. | Choose for higher-output-current automotive rails where 3.5 A capability and 60 V transient handling outweigh size and IQ penalties. |
Compared with LMR16006YQ5DDCTQ1, LMR14006Q5DDARQ1 offers design flexibility at the cost of component count and board area, while TPS54360BQDDAQ1 trades ultra-low quiescent current for higher output capability and ruggedness-making LMR16006YQ5DDCTQ1 optimal for compact, low-IQ 5 V automotive sub-systems.
Availability
LMR16006YQ5DDCTQ1 is available at Aetrix Electronics and suitable for automotive infotainment, telematics control units, and aftermarket dash camera modules requiring stable component supply across extended temperature and lifecycle demands.
Supply support for LMR16006YQ5DDCTQ1 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 automotive ICs, with decades of automotive qualification expertise and broad manufacturing scale.
The LMR16006YQ5DDCTQ1 belongs to TI's SIMPLE SWITCHER® automotive buck regulator family, designed specifically for reliable, low-component-count DC-DC conversion in harsh-temperature, safety-conscious vehicle subsystems.
FAQ
What is the output voltage tolerance of the LMR16006YQ5DDCTQ1 under full load and temperature range?
The LMR16006YQ5DDCTQ1 delivers a fixed 5 V output with ±3% tolerance across the full AEC-Q100 Grade 1 operating junction temperature range (–40°C to +125°C) and up to 600 mA load. This specification is verified per TI's electrical characteristics table (VOUT = 4.85 V to 5.15 V at TJ = –40°C to +125°C), ensuring consistent performance in automotive environments without external trimming.
Does the LMR16006YQ5DDCTQ1 require external compensation components?
No, the LMR16006YQ5DDCTQ1 features fully internal compensation, eliminating the need for external RC networks on the COMP or FB pins. This simplifies design, reduces BOM count, and improves reliability-especially critical in automotive applications where component count directly impacts field failure rates. The internal compensation is optimized for typical 6.8 µH inductors and 10 µF ceramic output capacitors.
How does the ECO mode in the LMR16006YQ5DDCTQ1 differ from standard pulse-skipping or burst mode?
The LMR16006YQ5DDCTQ1 enters ECO mode based on peak inductor current (≤80 mA), not average load current, enabling precise light-load efficiency optimization without audible noise or output voltage ripple associated with burst mode. In ECO mode, it draws only 28 µA quiescent current while maintaining regulated 5 V output-ideal for automotive modules that remain powered during vehicle sleep cycles.
Can the LMR16006YQ5DDCTQ1 operate with input voltage below 4 V?
No-the LMR16006YQ5DDCTQ1 has a guaranteed minimum operating input voltage of 4 V per its recommended operating conditions. Below this, undervoltage lockout (UVLO) disables regulation to prevent unstable operation. The rising UVLO threshold is 4 V, and the falling threshold is 3 V, providing hysteresis to avoid oscillation near the cutoff point. For sub-4 V battery applications, a different regulator such as the TPS62840 is required.
What is the maximum duty cycle supported by the LMR16006YQ5DDCTQ1 and how is it achieved?
The LMR16006YQ5DDCTQ1 supports up to 97% maximum duty cycle, enabled by its integrated boot UVLO and CB refresh logic. When CB-to-SW voltage drops below 3 V, the high-side MOSFET is disabled to allow the low-side path to recharge the boot capacitor. This architecture sustains high duty cycle even at low VIN–VOUT differentials-critical for automotive cold-crank (e.g., 6 V input → 5 V output) without dropout.
LMR16006YQ5DDCTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
LMR16006YQ5DDCTQ1 FAQ
1.How can I place an order for LMR16006YQ5DDCTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16006YQ5DDCTQ1 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 LMR16006YQ5DDCTQ1 reliable?
The price and inventory of LMR16006YQ5DDCTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16006YQ5DDCTQ1 is usually 5 days.
3.What payment methods are accepted for LMR16006YQ5DDCTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16006YQ5DDCTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16006YQ5DDCTQ1?
LMR16006YQ5DDCTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16006YQ5DDCTQ1 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 LMR16006YQ5DDCTQ1?
For technical support, including LMR16006YQ5DDCTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16006YQ5DDCTQ1 requirements.
6.How does Aetrix verify that LMR16006YQ5DDCTQ1 is sourced from the original manufacturer or authorized distributors?
All LMR16006YQ5DDCTQ1 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 LMR16006YQ5DDCTQ1 meets industry standards.
7.What is the process for return or replacement of LMR16006YQ5DDCTQ1?
All LMR16006YQ5DDCTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMR16006YQ5DDCTQ1, 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 LMR16006YQ5DDCTQ1 part is unused and in its original packaging.
Return procedure for LMR16006YQ5DDCTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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