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Texas Instruments LMR16006XDDCT
- Part No.:
- LMR16006XDDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR16006XDDCT.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,227
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Product details
Overview
LMR16006XDDCT from Texas Instruments is a 60 V input, 600 mA 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 equipment requiring high efficiency at light loads.
For engineers reviewing the LMR16006XDDCT datasheet, LMR16006XDDCT pinout, LMR16006XDDCT application, or LMR16006XDDCT equivalent, key selection criteria include input voltage range (4–60 V), thermal shutdown threshold (170°C), peak current limit (1200–1700 mA), bootstrap capacitor support (CB/SW), and integrated soft-start with internal compensation.
Technical Context
The LMR16006XDDCT implements constant-frequency peak current-mode control with internal slope compensation and leading-edge blanking to stabilize loop response and suppress noise-induced false triggering. Its integrated high-side MOSFET features 900 mΩ typical RDS(on) and is driven via an internal boot regulator that monitors CB-to-SW voltage for UVLO-based refresh control.
ECO mode activates automatically when inductor peak current falls below ~80 mA, disabling PWM switching and reducing quiescent current to 28 µA while maintaining output regulation-enabling >85% efficiency at 1 mA load. Shutdown current is 1 µA, and undervoltage lockout thresholds are 3 V (falling) and 4 V (rising).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 60 V - supports wide-range unregulated sources including automotive batteries and industrial rails. |
| Output Current | Up to 600 mA - sufficient for powering microcontrollers, sensors, and interface ICs in compact systems. |
| Switching Frequency | 595–805 kHz (X version) - enables use of small 22 µH inductors and 10 µF ceramic output capacitors. |
| Feedback Reference | 0.747–0.782 V (typ 0.765 V) - sets output voltage via resistor divider; allows precise low-voltage outputs down to ~0.8 V. |
| Quiescent Current | 28 µA in ECO mode - extends battery life in always-on portable instrumentation without sacrificing regulation. |
| Shutdown Current | 1 µA max - ensures minimal leakage during system sleep states. |
| Thermal Shutdown | 170°C trip, 160°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
SOT-6L (DDC) package: 2.90 mm × 1.60 mm, low-profile surface-mount with exposed thermal pad (not electrically connected). Thermal resistance RθJA = 102°C/W on standard 4-layer board.
| 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 ground | Primary return path for input, output, and internal circuitry; must be low-impedance connection to minimize noise and thermal rise. |
| FB | Feedback input | Monitors output voltage via resistor divider; regulates output by comparing to 0.765 V internal reference. |
| SHDN | Enable/disable control | High-voltage tolerant (≤60 V); pull below 1.25 V to disable; floating or ≥1.25 V enables operation. |
| VIN | Main power input | Supplies internal bias and drains high-side MOSFET; accepts 4–60 V with 65 V absolute max rating. |
| SW | Switch node | Connects to inductor, catch diode, and CB capacitor; carries high dv/dt switching waveform and pulsed current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boot recharge diode | Eliminates external diode, reducing BOM count and layout area while enabling reliable high-duty-cycle operation. |
| Internal soft-start | Prevents inrush current during startup by gradually ramping COMP node voltage-no external capacitor required. |
| Pulse-by-pulse overcurrent protection | Clamps COMP voltage to limit peak switch current to 1200–1700 mA, preventing MOSFET failure under short-circuit conditions. |
| Overvoltage transient protection (OVTP) | Disables high-side switch if FB exceeds 108% of reference (≈0.826 V), minimizing overshoot during load dump or unload transients. |
| High-voltage enable input | SHDN pin tolerates up to 60 V and includes internal pull-up-enables direct connection to 12/24 V system rails without level-shifting. |
Applications
| Industrial Distributed Power | Automotive Body Control |
|---|---|
Use Scenario: Powering PLC I/O modules and fieldbus transceivers from 24 V rail with variable load profiles. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 5 V or 3.3 V to digital logic and analog front-ends. Use Value: 60 V input rating withstands load-dump transients; ECO mode maintains >80% efficiency at 10 mA sensor bias current. | Use Scenario: Supplying infotainment subsystems and lighting controllers in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Buck converter generating 5 V for MCU, CAN transceivers, and display drivers. Use Value: 1 µA shutdown current meets OEM requirements for ignition-off battery drain; thermal shutdown prevents fault propagation. |
| Battery-Powered Handheld Instruments | Portable Media Players |
Use Scenario: Regulating power from two-cell Li-ion (6–8.4 V) or 9 V alkaline to 3.3 V for ADCs and wireless SoCs. IC Role / Device Role / Timing Role: Main DC/DC converter managing battery energy across active and standby modes. Use Value: 28 µA ECO current extends runtime in sleep mode; internal compensation simplifies layout in space-constrained enclosures. | Use Scenario: Converting single-cell Li-ion (3.0–4.2 V) to 1.8 V core voltage for audio codecs and flash memory. IC Role / Device Role / Timing Role: Efficient point-of-load regulator supporting dynamic voltage scaling during playback. Use Value: 0.7 MHz switching enables compact 22 µH inductor + 10 µF ceramic solution; low dropout behavior sustains regulation near battery end-of-life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14006XDDCT | 40 V max input, same 600 mA output, 0.7 MHz, identical SOT-6L package and pinout. | Not suitable for >40 V inputs (e.g., industrial 48 V or automotive load dump). | Select when input never exceeds 40 V-offers lower RDS(on) (650 mΩ) and improved light-load efficiency. |
| MP2451DT-LF-Z | 36 V max input, 0.6 A, 2 MHz, SOT-23-6 package; no integrated boot diode; requires external bootstrap diode. | Larger solution size due to external components; less robust under high-duty-cycle conditions. | Choose for cost-sensitive designs where 2 MHz enables smaller magnetics and footprint is secondary to BOM count. |
Compared with LMR14006XDDCT, the LMR16006XDDCT provides 20 V higher input tolerance critical for industrial transients; versus MP2451DT-LF-Z, it delivers superior integration and reliability in high-duty-cycle or battery-critical applications despite slightly larger package.
Availability
LMR16006XDDCT is available at Aetrix Electronics and suitable for industrial distributed power systems, automotive body electronics, and battery-powered handheld instruments requiring stable component supply across extended temperature and voltage ranges.
Supply support for LMR16006XDDCT 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 LMR16006XDDCT belongs to TI's SIMPLE SWITCHER® family-engineered for ease of design-in, minimal external components, and robust operation in harsh environments like factory automation and vehicle subsystems.
FAQ
What is the switching frequency of the LMR16006XDDCT?
The LMR16006XDDCT operates at a fixed switching frequency of 595–805 kHz (typical 700 kHz), optimized for use with compact 22 µH inductors and ceramic output capacitors. This frequency balances efficiency, EMI performance, and component size-distinct from the 2.1 MHz Y-version. The X-version's lower frequency reduces switching losses at medium-to-heavy loads while maintaining fast transient response.
Does the LMR16006XDDCT require an external bootstrap diode?
No, the LMR16006XDDCT integrates the bootstrap recharge diode internally, eliminating the need for an external component between CB and VIN. This simplifies layout, reduces BOM count, and improves reliability in high-duty-cycle applications-unlike many competing buck regulators that mandate external diodes for boot capacitor refresh.
How does ECO mode function in the LMR16006XDDCT?
ECO mode in the LMR16006XDDCT activates automatically when inductor peak current drops below ~80 mA, suspending PWM switching to reduce quiescent current to 28 µA. It maintains output regulation using burst-mode-like operation-ideal for battery-powered devices in standby. The LMR16006XDDCT exits ECO mode seamlessly when load increases, ensuring no output voltage glitch or delay.
What is the maximum duty cycle supported by the LMR16006XDDCT?
The LMR16006XDDCT supports up to 96% maximum duty cycle, enabled by its boot UVLO circuit and internal wimp FET refresh mechanism. When CB-to-SW voltage falls below 3 V, the high-side MOSFET turns off to allow the low-side path to recharge the boot capacitor-permitting continuous conduction even at VIN/VOUT ratios near 12:1, such as 48 V → 5 V conversion.
Can the LMR16006XDDCT be used with ceramic output capacitors only?
Yes, the LMR16006XDDCT is fully compatible with ceramic-only output capacitance, including 10 µF X7R types commonly used in its reference designs. Its internal compensation and current-mode architecture ensure stability without requiring ESR-based damping-eliminating the need for aluminum or tantalum capacitors and reducing solution size, cost, and aging-related drift.
LMR16006XDDCT 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
LMR16006XDDCT FAQ
1.How can I place an order for LMR16006XDDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16006XDDCT 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 LMR16006XDDCT reliable?
The price and inventory of LMR16006XDDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16006XDDCT is usually 5 days.
3.What payment methods are accepted for LMR16006XDDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16006XDDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16006XDDCT?
LMR16006XDDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16006XDDCT 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 LMR16006XDDCT?
For technical support, including LMR16006XDDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16006XDDCT requirements.
6.How does Aetrix verify that LMR16006XDDCT is sourced from the original manufacturer or authorized distributors?
All LMR16006XDDCT 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 LMR16006XDDCT meets industry standards.
7.What is the process for return or replacement of LMR16006XDDCT?
All LMR16006XDDCT units undergo pre-shipment inspection (PSI). If there is an issue with LMR16006XDDCT, 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 LMR16006XDDCT part is unused and in its original packaging.
Return procedure for LMR16006XDDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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