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Texas Instruments LMR16006YDDCT
- Part No.:
- LMR16006YDDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR16006YDDCT.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,748
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Product details
Overview
LMR16006YDDCT from Texas Instruments is a 60 V input, 600 mA synchronous buck DC/DC regulator in SOT-6L package, featuring 2.1 MHz fixed-frequency current-mode control, 0.765 V feedback reference, and ECO mode for ultra-low 28 µA quiescent current-designed for industrial power conditioning and battery-powered instrumentation.
For engineers reviewing the LMR16006YDDCT datasheet, LMR16006YDDCT pinout, LMR16006YDDCT application, or LMR16006YDDCT equivalent, key selection considerations include its 2.1 MHz switching frequency enabling compact magnetics, high-side MOSFET with integrated boot diode, thermal shutdown at 170°C, and high-voltage enable (SHDN) tolerant to 60 V.
Technical Context
The LMR16006YDDCT implements constant-frequency peak-current-mode control with internal slope compensation and leading-edge blanking, supporting stable regulation across wide input (4–60 V) and output (≥0.765 V) ranges. Its integrated high-side MOSFET features 900 mΩ RDS(on) and bootstrap gate drive via CB/SW pins, with UVLO protection on CB-to-SW voltage below 3 V.
ECO mode activates when inductor peak current falls ≤80 mA, reducing switching losses and achieving 28 µA operating IQ; shutdown draws only 1 µA. Overvoltage transient protection (OVTP) clamps FB > 108% of 0.765 V to suppress overshoot during load transients, while pulse-by-pulse current limit and thermal shutdown (170°C trip, 160°C hysteresis) ensure robust fault handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 60 V - supports direct connection to automotive batteries, industrial rails, and unregulated 48 V systems without pre-regulation. |
| Output Current | Up to 600 mA - sufficient for powering microcontrollers, sensors, and RF modules in space-constrained designs. |
| Switching Frequency | 2.1 MHz (Y version) - enables use of small 22 µH inductors and 10 µF ceramic output capacitors, minimizing solution footprint. |
| Feedback Reference | 0.765 V (typ) - sets output voltage via resistor divider (VOUT = 0.765 × (1 + R1/R2)), allowing precise low-voltage regulation down to ~0.8 V. |
| Quiescent Current | 28 µA in ECO mode - extends battery life in always-on portable instruments and remote sensors. |
| Shutdown Current | 1 µA - ensures minimal drain during system sleep or storage, critical for long-life battery applications. |
| Thermal Shutdown | 170°C trip with 10°C hysteresis - protects against sustained overload or poor PCB thermal design without requiring external thermal monitoring. |
Pinout & Package
SOT-6L (DDCT) package: 2.90 mm × 1.60 mm, low-profile surface-mount outline with exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CB | Bootstrap capacitor terminal | Connects external 100 nF ceramic cap to SW; supplies gate drive voltage for internal high-side MOSFET; monitored for UVLO to prevent boot failure. |
| GND | Power and signal ground | Primary return path for power stage, control circuitry, and feedback network; must be low-impedance and tied to thermal pad. |
| FB | Feedback input | Monitors output voltage via resistor divider; regulates output by comparing to 0.765 V internal reference; high-impedance node requiring clean routing. |
| SHDN | Enable/disable control | High-voltage tolerant (≤60 V) logic input; pulled up internally; <1.25 V disables regulator and reduces IQ to 1 µA; float or ≥1.25 V enables operation. |
| VIN | Main power input | Supplies internal bias and drives high-side MOSFET drain; accepts 4–60 V; requires local 10 µF ceramic input capacitor near pin. |
| SW | Switch node | Connects to inductor, Schottky diode cathode, and CB capacitor; carries high dv/dt switching waveform; requires tight layout and minimal trace area. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boot diode | Eliminates external bootstrap diode, reducing BOM count and layout complexity while maintaining reliable high-side gate drive. |
| ECO light-load mode | Automatically enters discontinuous conduction mode at light loads to reduce switching and gate-drive losses, sustaining >85% efficiency at 1 mA output. |
| Overvoltage transient protection (OVTP) | Detects FB > 0.826 V (108% of 0.765 V) and disables high-side switch to clamp output overshoot during rapid load release, critical for low-COUT designs. |
| Internal soft-start | Controls output ramp rate via internal SS capacitor, limiting inrush current into output capacitance and preventing input rail droop during startup. |
| High-voltage SHDN input | Accepts logic-level or system-rail enable signals up to 60 V without level-shifting, simplifying interface with microcontrollers or PMICs in multi-rail systems. |
Applications
| Industrial Distributed Power | Automotive Body Control |
|---|---|
Use Scenario: Powering PLC I/O modules, field transmitters, and isolated sensor interfaces from 24 V or 48 V DC rails with strict thermal and size constraints. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 3.3 V or 5 V to microcontrollers and analog front-ends; operates continuously under full load with minimal heatsinking. Use Value: 60 V absolute max rating tolerates 48 V rail transients; 2.1 MHz switching allows compact 22 µH inductor; 102 °C/W θJA supports operation at 85°C ambient without derating. | Use Scenario: Supplying infotainment displays, door module ECUs, and lighting controllers from vehicle battery (9–16 V nominal, up to 60 V load dump). IC Role / Device Role / Timing Role: Input-stage buck converter converting raw battery voltage to regulated 5 V for USB ports, CAN transceivers, and MCU cores. Use Value: 1 µA shutdown current preserves battery during vehicle sleep; ECO mode maintains >90% efficiency at 10 mA standby load; UVLO threshold (4 V rising) prevents brownout resets. |
| Battery-Powered Instruments | Portable Media Devices |
Use Scenario: Power management in handheld multimeters, gas detectors, and portable oscilloscopes using Li-ion or alkaline primary cells. IC Role / Device Role / Timing Role: Main system regulator stepping down 6–12 V battery stack to 3.3 V for ADCs, displays, and wireless SoCs; cycles between active and deep-sleep states. Use Value: 28 µA ECO IQ extends runtime by >3× vs continuous-mode regulators; internal soft-start prevents battery sag during wake-up; no external compensation required. | Use Scenario: Voltage conversion in portable audio players and Bluetooth headsets where PCB area and battery life are critical. IC Role / Device Role / Timing Role: Secondary regulator generating clean 1.8 V or 3.3 V from main Li-ion cell (3.0–4.2 V), powering codecs, flash memory, and Bluetooth radios. Use Value: 2.1 MHz operation enables use of tiny 1.0 × 0.5 mm inductors; SOT-6L footprint fits within 30 mm² total solution area; 0.765 V reference supports accurate low-VOUT setting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14006YDDCT | 40 V max input, same 600 mA output, 2.1 MHz, identical SOT-6L package and pinout | Not suitable for >40 V inputs (e.g., 48 V industrial, load dump) | Select when input never exceeds 40 V and lower cost or inventory availability is prioritized. |
| MP2451DT-LF-Z | 36 V max input, 600 mA, 2 MHz, SOT-23-6 package, 0.8 V reference, no ECO mode | Lacks ultra-low IQ (120 µA typical), no OVTP, smaller thermal pad | Choose for cost-sensitive consumer applications where 28 µA IQ and overshoot suppression are non-critical. |
Compared with LMR14006YDDCT and MP2451DT-LF-Z, the LMR16006YDDCT uniquely combines 60 V input tolerance, 28 µA ECO mode, and integrated OVTP-making it the only option among the three qualified for automotive load-dump survival and battery-powered equipment requiring multi-year shelf life.
Availability
LMR16006YDDCT is available at Aetrix Electronics and suitable for industrial distributed power systems, automotive body electronics, and battery-powered instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for LMR16006YDDCT 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 LMR16006YDDCT belongs to TI's SIMPLE SWITCHER® buck regulator family, engineered for rugged industrial and automotive environments where wide input range, low IQ, and integrated protection are mandatory-not just desirable.
FAQ
What is the switching frequency of the LMR16006YDDCT?
The LMR16006YDDCT operates at a fixed 2.1 MHz switching frequency, as designated by the 'Y' suffix. This high frequency allows use of miniature 22 µH inductors and low-ESR ceramic capacitors, significantly reducing solution size versus lower-frequency alternatives. The device does not support frequency adjustment or synchronization to external clocks.
Does the LMR16006YDDCT require an external bootstrap diode?
No, the LMR16006YDDCT integrates the bootstrap diode internally, eliminating the need for an external component between CB and VIN. This simplifies layout, reduces BOM count, and improves reliability-especially in high-vibration environments like automotive applications. Only a 100 nF ceramic capacitor between CB and SW is required.
How does ECO mode function in the LMR16006YDDCT?
ECO mode in the LMR16006YDDCT activates automatically when inductor peak current drops to ≤80 mA, reducing switching activity to minimize gate-drive and switching losses. This lowers operating quiescent current to 28 µA while maintaining regulation-extending battery life in portable devices. Mode transition is seamless and requires no external control.
What protection features are built into the LMR16006YDDCT?
The LMR16006YDDCT includes pulse-by-pulse overcurrent protection, thermal shutdown (170°C trip with 10°C hysteresis), input undervoltage lockout (4 V rising threshold), overvoltage transient protection (OVTP) to clamp FB > 0.826 V, and boot UVLO to prevent high-side MOSFET failure. All protections are fully internal and require no external components.
Can the LMR16006YDDCT regulate output voltages below 1 V?
Yes-the LMR16006YDDCT's 0.765 V feedback reference enables output regulation down to approximately 0.8 V using standard resistor dividers. For example, a 50 kΩ top resistor and 100 kΩ bottom resistor yields VOUT = 0.765 × (1 + 50/100) = 1.1475 V. Lower outputs require precision resistors and careful layout to minimize noise injection at the FB pin.
LMR16006YDDCT 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.765V
- Voltage - Output (Max):
- 55V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
LMR16006YDDCT FAQ
1.How can I place an order for LMR16006YDDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16006YDDCT 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 LMR16006YDDCT reliable?
The price and inventory of LMR16006YDDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16006YDDCT is usually 5 days.
3.What payment methods are accepted for LMR16006YDDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16006YDDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16006YDDCT?
LMR16006YDDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16006YDDCT 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 LMR16006YDDCT?
For technical support, including LMR16006YDDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16006YDDCT requirements.
6.How does Aetrix verify that LMR16006YDDCT is sourced from the original manufacturer or authorized distributors?
All LMR16006YDDCT 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 LMR16006YDDCT meets industry standards.
7.What is the process for return or replacement of LMR16006YDDCT?
All LMR16006YDDCT units undergo pre-shipment inspection (PSI). If there is an issue with LMR16006YDDCT, 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 LMR16006YDDCT part is unused and in its original packaging.
Return procedure for LMR16006YDDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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