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Texas Instruments LMR16006XDDCR
- Part No.:
- LMR16006XDDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR16006XDDCR.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:168
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Product details
Overview
LMR16006XDDCR from Texas Instruments is a 60 V input, 0.6 A synchronous buck DC/DC regulator in SOT-6L package, featuring 0.7 MHz fixed switching frequency, 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 LMR16006XDDCR datasheet, LMR16006XDDCR pinout, LMR16006XDDCR application, or LMR16006XDDCR equivalent, key selection criteria include input voltage range (4–60 V), peak current limit (1200–1700 mA), thermal shutdown threshold (170°C), and compatibility with ceramic output capacitors and external bootstrap capacitor.
Technical Context
The LMR16006XDDCR implements constant-frequency peak current-mode control with internal compensation and integrated high-side MOSFET (900 mΩ RDS(on)). Its bootstrap circuit (CB/SW pins) enables high-duty-cycle operation up to 96%, supported by CB-to-SW UVLO protection at 3 V.
ECO mode activates automatically when inductor peak current falls below ~80 mA, reducing switching losses and maintaining 28 µA quiescent current at light loads. Overvoltage transient protection (OVTP) clamps FB voltage at 108% of reference (0.826 V) to suppress overshoot during load unload transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 60 V - supports wide-input industrial and automotive rails without pre-regulation |
| Output Current | Up to 600 mA - sufficient for powering microcontrollers, sensors, and interface ICs |
| Switching Frequency | 595–805 kHz (X version) - enables compact 22 µH inductors and low-ESR ceramic output caps |
| Feedback Reference | 0.747–0.782 V (typ 0.765 V) - sets output voltage via resistor divider; enables 3.3 V, 5 V, or custom outputs |
| Quiescent Current | 28 µA in ECO mode - extends battery life in always-on portable equipment |
| Shutdown Current | 1 µA max - ensures minimal leakage during system sleep states |
| Peak Current Limit | 1200–1700 mA - provides cycle-by-cycle overcurrent protection without external sensing |
| Thermal Shutdown | 170°C trip, 160°C hysteresis - prevents damage under sustained overload or poor PCB thermal design |
Pinout & Package
SOT-6L (DDC) package: 2.90 mm × 1.60 mm, low-profile surface-mount, thermally enhanced with exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CB | Bootstrap bias supply | Connects external 100 nF ceramic capacitor to SW; supplies gate drive for internal high-side MOSFET |
| GND | Power and signal ground | Primary return path for VIN, SW, FB, SHDN; must be low-impedance copper pour for stability |
| FB | Feedback input | Monitors output voltage via resistor divider; regulates VOUT = 0.765 V × (1 + R1/R2) |
| SHDN | Enable/disable control | High-voltage tolerant (≤60 V); pull ≤1.25 V to disable; floating or ≥1.25 V enables regulator |
| VIN | Main power input | Supplies internal bias and drives high-side MOSFET drain; requires local 10 µF ceramic input capacitor |
| SW | Switch node | Connects to inductor, Schottky diode cathode, and CB capacitor; carries high dv/dt switching waveform |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boot recharge diode | Eliminates external bootstrap diode, reducing BOM count and layout area in SOT-6L footprint |
| Internal soft-start | Prevents inrush current during startup; eliminates need for external SS capacitor or timing resistor |
| Overvoltage transient protection (OVTP) | Clamps high-side switch off when FB exceeds 0.826 V, limiting output overshoot during rapid load release |
| Pulse-by-pulse current limit | Enables robust short-circuit protection without foldback or hiccup; maintains regulation under partial overload |
| UVLO on VIN and SHDN | Ensures clean startup above 4 V input and allows programmable enable threshold using external resistor divider |
Applications
| Industrial Distributed Power | Automotive Body Electronics |
|---|---|
Use Scenario: Powering PLC I/O modules and fieldbus gateways from 24 V DC rails with variable load profiles. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 3.3 V or 5 V to microcontroller, CAN transceiver, and analog front-end. Use Value: 60 V absolute max rating withstands load-dump transients; ECO mode sustains >10-year battery backup in remote sensor nodes. | Use Scenario: Supplying infotainment display controllers and door module MCUs from 12 V battery with cold-crank tolerance. IC Role / Device Role / Timing Role: Step-down converter operating down to 4 V input during cranking, maintaining 5 V rail for critical logic. Use Value: 96% max duty cycle enables regulation even at 5.5 V input; thermal shutdown protects against enclosure overheating. |
| Portable Handheld Instruments | Battery-Powered Medical Devices |
Use Scenario: Power management in handheld multimeters and thermal imagers using dual-cell Li-ion (6–8.4 V) or 9 V alkaline. IC Role / Device Role / Timing Role: Main DC/DC converter generating 3.3 V for ADC, display driver, and BLE radio subsystem. Use Value: 28 µA ECO quiescent current extends runtime between charges; 0.7 MHz switching avoids AM band interference. | Use Scenario: Long-life wearable monitors powered by coin-cell or small LiPo batteries requiring multi-year shelf life. IC Role / Device Role / Timing Role: Ultra-low-power buck regulator enabling continuous sensor sampling and Bluetooth LE beaconing. Use Value: 1 µA shutdown current minimizes self-discharge; internal soft-start prevents false wake-up from inrush spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR16006YDDCR | 2.1 MHz switching frequency (vs. 0.7 MHz); same pinout, package, and specs otherwise | Better suited for space-constrained designs needing smaller inductors/caps; higher switching loss at full load | Select Y version when board area is limited and efficiency at light-to-moderate load is prioritized |
| MP2451DT-LF-Z | 36 V max input, 0.6 A, 2 MHz, 3.3 µA IQ - no ECO mode; different pinout (SOT-23-6) | Lacks high-voltage capability and ultra-low-IQ ECO mode; requires external compensation | Use only if input never exceeds 36 V and thermal constraints allow higher IQ; not drop-in compatible |
Compared with LMR16006YDDCR, the LMR16006XDDCR trades higher-frequency component size reduction for lower switching loss at medium-to-heavy loads; versus MP2451DT-LF-Z, it delivers superior high-voltage resilience and battery longevity but requires no external compensation network.
Availability
LMR16006XDDCR is available at Aetrix Electronics and suitable for industrial distributed power systems, automotive body electronics, and portable handheld instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMR16006XDDCR 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 LMR16006 series belongs to TI's SIMPLE SWITCHER® portfolio-engineered for ease-of-use in rugged industrial and automotive environments where input transients, thermal stress, and long-term reliability are critical.
FAQ
What is the switching frequency of the LMR16006XDDCR?
The LMR16006XDDCR operates at a fixed switching frequency of 595–805 kHz (typical 700 kHz). This X-version frequency enables use of standard 22 µH inductors and reduces EMI compared to higher-frequency alternatives, while maintaining compact solution size. The frequency is internally set and not adjustable.
Does the LMR16006XDDCR require an external bootstrap diode?
No, the LMR16006XDDCR integrates the bootstrap recharge diode internally. A single 100 nF ceramic capacitor between CB and SW pins suffices for gate drive-eliminating the external diode required by many competing buck regulators and simplifying layout in the SOT-6L footprint.
How does ECO mode function in the LMR16006XDDCR?
ECO mode in the LMR16006XDDCR activates automatically when inductor peak current drops below ~80 mA and output voltage remains regulated. In this mode, the device skips switching cycles to reduce gate drive and switching losses, achieving just 28 µA quiescent current-critical for extending battery life in always-on portable devices.
What is the maximum duty cycle supported by the LMR16006XDDCR?
The LMR16006XDDCR supports up to 96% maximum duty cycle, enabled by its bootstrap UVLO circuit and internal wimp FET refresh mechanism. This allows regulation down to VOUT ≈ VIN − 0.5 V under light loads, making it suitable for high-input, low-output applications like 24 V-to-3.3 V conversion without external LDO post-regulation.
Can the LMR16006XDDCR be used with ceramic output capacitors?
Yes, the LMR16006XDDCR is fully compatible with low-ESR ceramic output capacitors. Its internal compensation and current-mode architecture stabilize with 10 µF X7R ceramics (as validated in TI's typical application circuit), eliminating need for tantalum or aluminum electrolytics and improving reliability and temperature stability.
LMR16006XDDCR 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:
- 700kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
LMR16006XDDCR FAQ
1.How can I place an order for LMR16006XDDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16006XDDCR 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 LMR16006XDDCR reliable?
The price and inventory of LMR16006XDDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16006XDDCR is usually 5 days.
3.What payment methods are accepted for LMR16006XDDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16006XDDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16006XDDCR?
LMR16006XDDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16006XDDCR 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 LMR16006XDDCR?
For technical support, including LMR16006XDDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16006XDDCR requirements.
6.How does Aetrix verify that LMR16006XDDCR is sourced from the original manufacturer or authorized distributors?
All LMR16006XDDCR 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 LMR16006XDDCR meets industry standards.
7.What is the process for return or replacement of LMR16006XDDCR?
All LMR16006XDDCR units undergo pre-shipment inspection (PSI). If there is an issue with LMR16006XDDCR, 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 LMR16006XDDCR part is unused and in its original packaging.
Return procedure for LMR16006XDDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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