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Texas Instruments LMR16006YQ3DDCRQ1
- Part No.:
- LMR16006YQ3DDCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR16006YQ3DDCRQ1.pdf
- Description:
- IC REG BUCK 3.3V 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,896
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Product details
Overview
LMR16006YQ3DDCRQ1 from Texas Instruments is an automotive-grade synchronous buck DC-DC regulator delivering up to 600 mA output current with fixed 3.3 V output, 2.1 MHz switching frequency, and 28 µA standby current in ECO mode. It operates from 4 V to 40 V input, supports 97% duty cycle, and integrates internal compensation and soft-start for battery-powered automotive systems.
For engineers reviewing the LMR16006YQ3DDCRQ1 datasheet, LMR16006YQ3DDCRQ1 pinout, LMR16006YQ3DDCRQ1 application, or LMR16006YQ3DDCRQ1 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (-40°C to +125°C), ultra-low shutdown current (1 µA), integrated boot diode, and SOT-6L package compatibility with space-constrained automotive modules.
Technical Context
The LMR16006YQ3DDCRQ1 implements constant-frequency peak current-mode control with internal slope compensation and leading-edge blanking for stable transient response. Its integrated high-side MOSFET features 900 mΩ RDS(on), and the bootstrap circuit (CB–SW) enables high-duty-cycle operation with automatic refresh via internal wimp FET.
It includes overcurrent protection via COMP node clamping, thermal shutdown at 170°C with 10°C hysteresis, and overvoltage transient protection (OVTP) that disables the high-side switch when FB exceeds 108% of 0.765 V reference-critical for low-COUT automotive designs.
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 (up to 65 V absolute max). |
| Output Voltage | Fixed 3.3 V ±3% - factory-trimmed for precision; eliminates external feedback resistors and reduces BOM count. |
| Max Output Current | 600 mA - sufficient for powering microcontrollers, sensors, and CAN transceivers in automotive ECUs. |
| Switching Frequency | 2.1 MHz (±15%) - enables use of compact 6.8 µH inductors and 10 µF ceramic output capacitors. |
| Quiescent Current | 28 µA in ECO mode - extends battery life in always-on vehicle modules such as telematics and body controllers. |
| Shutdown Current | 1 µA - ensures minimal drain during vehicle sleep mode, meeting OEM quiescent power budgets. |
| Feedback Reference | 0.765 V (±2.3%) - sets accuracy of output regulation and defines minimum achievable output voltage (e.g., 0.8 V with external divider). |
| Thermal Shutdown | 170°C trip, 160°C recovery - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
LMR16006YQ3DDCRQ1 is housed in a thermally enhanced 6-pin SOT-6L (DDC) package measuring 2.9 mm × 1.6 mm × 1.0 mm, optimized for high-power-density automotive layouts with exposed pad for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CB (Pin 1) | Bootstrap bias supply | Connects to SW via 100 nF ceramic capacitor; supplies gate drive for internal high-side MOSFET; monitored by UVLO for safe high-duty-cycle operation. |
| GND (Pin 2) | Power ground | Main return path for input, output, and IC bias currents; must be connected to low-impedance PCB ground plane adjacent to VIN and SW pins. |
| FB (Pin 3) | Feedback input | Internally tied to 0.765 V reference; unused in fixed 3.3 V version but must remain unconnected per datasheet guidance. |
| SHDN (Pin 4) | Enable/disable control | High-voltage tolerant (65 V max); pulled up internally; logic-high (>1.25 V) enables regulator; <1.25 V disables with 1 µA shutdown current. |
| VIN (Pin 5) | Main power input | Supplies internal LDO and high-side MOSFET drain; accepts 4–40 V DC; requires local 2.2 µF X7R ceramic decoupling close to pin. |
| SW (Pin 6) | Switch node | Connects to inductor, Schottky diode cathode, and CB capacitor; carries high dv/dt switching waveform; requires tight layout to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Guarantees operation from –40°C to +125°C junction temperature-required for under-hood and infotainment applications. |
| Integrated boot diode | Eliminates external bootstrap diode, reducing component count and board area while improving reliability in high-temp environments. |
| ECO light-load mode | Automatically transitions to pulse-skipping at ILOAD < ~80 mA, maintaining >85% efficiency down to 1 mA output current. |
| Overvoltage transient protection (OVTP) | Clamps SW node when FB exceeds 0.826 V (108% × 0.765 V), preventing output overshoot during fast load release-critical for 3.3 V I/O rails. |
| Internal soft-start | 1.2 ms typical ramp time limits inrush current into output capacitor, avoiding input voltage droop and system brownout. |
| 97% maximum duty cycle | Enables operation with VIN as low as 3.4 V at 3.3 V output-supports cold-crank conditions without dropout. |
Applications
| Automotive Body Control Module (BCM) | ADAS Camera Power Supply |
|---|---|
|
Use Scenario: Powers microcontroller, LIN transceiver, and LED drivers in door module with 12 V battery input subject to load dump and cold crank. IC Role / Device Role / Timing Role: Primary 3.3 V point-of-load regulator providing stable, low-noise supply with fast transient response to handle PWM-driven loads. Use Value: 28 µA ECO mode extends battery runtime during vehicle sleep; 65 V transient tolerance prevents reset during alternator load dump. |
Use Scenario: Supplies image sensor and ISP in rear-view camera with strict EMI and ripple requirements in confined space behind headliner. IC Role / Device Role / Timing Role: Fixed-output buck converter delivering clean 3.3 V rail with 2.1 MHz switching to avoid interference with video clock frequencies. Use Value: Small SOT-6L footprint and integrated compensation reduce solution size to < 30 mm²; OVTP prevents sensor latch-up during hot-plug events. |
| Telematics Control Unit (TCU) | Aftermarket GPS Navigation System |
|
Use Scenario: Powers LTE modem, GNSS receiver, and flash memory in always-connected vehicle hotspot with aggressive thermal constraints. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating continuously in ECO mode during cellular idle periods. Use Value: 1 µA shutdown current meets OEM "zero-power" sleep spec; thermal shutdown with hysteresis avoids thermal cycling failures in sealed enclosures. |
Use Scenario: Replaces aging linear regulator in plug-and-play dash-mounted GPS unit powered from cigarette lighter (9–16 V). IC Role / Device Role / Timing Role: Drop-in buck replacement enabling higher efficiency and cooler operation without redesigning PCB layout. Use Value: Pin-compatible with legacy SOT-23-6 footprints; fixed 3.3 V output eliminates need for feedback resistor network rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14006Q3DDARQ1 | 40 V input, 600 mA, same SOT-6L package but 400 kHz switching frequency; higher quiescent current (40 µA in eco-mode). | Better suited for noise-sensitive analog circuits where lower switching frequency eases EMI filtering; less optimal for space-constrained designs requiring small magnetics. | Select when EMI compliance dictates sub-1 MHz operation and thermal budget allows higher IQ. |
| TPS543320RSAR | 2.2 V to 18 V input, 3 A output, 2.2 MHz, QFN-16; requires external compensation and feedback resistors. | Targets higher-current applications like infotainment processors; lacks AEC-Q100 qualification and automotive temp range. | Choose only for non-automotive industrial use where >600 mA is required and AEC-Q100 is not mandated. |
Compared with LMR16006YQ3DDCRQ1, LMR14006Q3DDARQ1 trades switching frequency for slightly higher IQ and identical automotive qualification, while TPS543320RSAR offers higher current and integration at the cost of qualification and fixed-output simplicity-neither is pin-compatible, and both require layout changes.
Availability
LMR16006YQ3DDCRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, and telematics control units requiring stable component supply with full AEC-Q100 traceability and extended temperature support.
Supply support for LMR16006YQ3DDCRQ1 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 automotive qualification expertise.
The LMR16006YQ3DDCRQ1 belongs to TI's SIMPLE SWITCHER® automotive buck regulator family, engineered specifically for reliable, low-quiescent-power DC-DC conversion in harsh vehicle environments.
FAQ
What is the operating junction temperature range for LMR16006YQ3DDCRQ1?
The LMR16006YQ3DDCRQ1 is AEC-Q100 Grade 1 qualified with a guaranteed operating junction temperature range of –40°C to +125°C. This specification is validated per JEDEC standards and applies across all recommended input voltages and load conditions. Thermal performance data-including RθJA = 102°C/W for the DDC package-is measured on a standard 4-layer 3" × 3" test board per JESD51-2.
Does LMR16006YQ3DDCRQ1 require external feedback resistors?
No, LMR16006YQ3DDCRQ1 is the fixed 3.3 V output variant and does not require external feedback resistors. The FB pin is internally connected to the 0.765 V reference and must be left unconnected per the datasheet. External resistors are only needed for adjustable versions (e.g., LMR16006YQ) to set VOUT using the equation VOUT = 0.765 V × (1 + R1/R2).
How does the ECO mode function in LMR16006YQ3DDCRQ1?
LMR16006YQ3DDCRQ1 enters ECO mode automatically when output voltage remains regulated and peak inductor current falls below ~80 mA-typically at loads below 50 mA depending on VIN/VOUT ratio and inductor value. In this mode, the device reduces switching and gate-drive losses, achieving 28 µA quiescent current while maintaining regulation. It resumes PWM operation immediately upon load increase.
Can LMR16006YQ3DDCRQ1 withstand automotive load dump transients?
Yes, LMR16006YQ3DDCRQ1 has an absolute maximum input rating of 65 V and is designed to survive ISO 7637-2 Pulse 5a (load dump) transients up to 60 V for 400 ms when properly protected with input TVS clamping. Its internal circuitry remains functional during these events, and the 4–40 V recommended operating range ensures robustness across normal battery and transient conditions.
What is the purpose of the CB pin on LMR16006YQ3DDCRQ1?
The CB (Charge Boot) pin on LMR16006YQ3DDCRQ1 provides gate drive voltage for the internal high-side MOSFET via a capacitor connected between CB and SW. This bootstrap circuit enables high-side switching without a floating supply. The device monitors CB–SW voltage and disables the high-side FET if it drops below 3 V, allowing the low-side path to recharge the capacitor-enabling reliable 97% duty cycle operation.
LMR16006YQ3DDCRQ1 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):
- 3.3V
- 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
LMR16006YQ3DDCRQ1 FAQ
1.How can I place an order for LMR16006YQ3DDCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16006YQ3DDCRQ1 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 LMR16006YQ3DDCRQ1 reliable?
The price and inventory of LMR16006YQ3DDCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16006YQ3DDCRQ1 is usually 5 days.
3.What payment methods are accepted for LMR16006YQ3DDCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16006YQ3DDCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16006YQ3DDCRQ1?
LMR16006YQ3DDCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16006YQ3DDCRQ1 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 LMR16006YQ3DDCRQ1?
For technical support, including LMR16006YQ3DDCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16006YQ3DDCRQ1 requirements.
6.How does Aetrix verify that LMR16006YQ3DDCRQ1 is sourced from the original manufacturer or authorized distributors?
All LMR16006YQ3DDCRQ1 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 LMR16006YQ3DDCRQ1 meets industry standards.
7.What is the process for return or replacement of LMR16006YQ3DDCRQ1?
All LMR16006YQ3DDCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMR16006YQ3DDCRQ1, 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 LMR16006YQ3DDCRQ1 part is unused and in its original packaging.
Return procedure for LMR16006YQ3DDCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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