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Texas Instruments LV2862XLVDDCT
- Part No.:
- LV2862XLVDDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LV2862XLVDDCT.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,609
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Product details
Overview
LV2862XLVDDCT from Texas Instruments is a 60-V input, 600-mA synchronous buck DC/DC converter in SOT-6L (DDC) package, featuring 770-kHz fixed switching frequency, 0.765-V feedback reference, and Eco-mode for ultra-low 28-µA light-load quiescent current. It delivers regulated output voltage in industrial power supplies, motor drives, and grid infrastructure systems with input transients up to 65 V.
For engineers reviewing the LV2862XLVDDCT datasheet, LV2862XLVDDCT pinout, LV2862XLVDDCT application, or LV2862XLVDDCT equivalent, key selection criteria include wide 4–60-V input range, internal compensation, high-voltage enable (SHDN), thermal shutdown at 170°C, and 96% maximum duty cycle for low-dropout operation.
Technical Context
The LV2862XLVDDCT implements constant-frequency peak current-mode control with integrated high-side MOSFET and bootstrap regulator. Its CB-to-SW boot capacitor enables gate drive for the high-side switch, while internal UVLO on the CB node ensures reliable refresh during high-duty-cycle operation.
It features internal soft start, pulse-by-pulse overcurrent protection, and thermal shutdown with 10°C hysteresis. The device operates in Eco-mode below ~10 mA load to reduce switching losses, achieving 90%+ efficiency at 100 mA with 12-V input and 5-V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 60 V - supports unregulated industrial and automotive sources; withstands 65-V transients without damage. |
| Switching Frequency | 770 kHz - balances small external component size (e.g., 22-µH inductor) and low output ripple. |
| Max Output Current | 600 mA - sufficient for auxiliary rails in motor drives and smart meters without external current boosting. |
| Feedback Reference | 0.765 V ±2.5% - sets output voltage via resistor divider; enables precise 3.3-V, 5-V, or 12-V regulation. |
| Quiescent Current | 28 µA in Eco-mode - extends battery life in always-on grid monitoring or remote sensor nodes. |
| Shutdown Current | 1 µA - minimizes system standby power when SHDN pin is pulled low. |
| Thermal Shutdown | 170°C trip, 160°C recovery - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
SOT-6L (DDC) package: 2.90 mm × 2.80 mm, low-profile surface-mount footprint with exposed pad for thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CB | Bootstrap bias supply | Connects ceramic capacitor (≥100 nF) between CB and SW to generate gate drive voltage for internal high-side MOSFET. |
| GND | Power and signal ground | Primary return path for VIN, SW, FB, and SHDN; must be low-impedance and tied to thermal pad. |
| FB | Feedback input | Monitors output voltage via resistor divider; regulates output to 0.765 V reference - determines VOUT = 0.765 × (1 + R1/R2). |
| SHDN | Enable/disable control | High-voltage tolerant (≤60 V); internal pullup; logic-high ≥1.25 V enables regulator; <1.25 V disables with 1-µA shutdown current. |
| VIN | Main power input | Supplies internal bias and drives high-side MOSFET drain; accepts 4–60 V with transient rating to 65 V. |
| SW | Switch node | Connects to inductor, Schottky diode cathode, and Cboot capacitor; carries high dv/dt switching waveform - requires tight layout. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode operation | Reduces switching activity below ~10 mA load, cutting IQ to 28 µA - critical for battery-backed grid sensors. |
| Integrated boot diode & UVLO | Eliminates external boot diode; CB-to-SW UVLO refreshes gate drive automatically - enables >90% duty cycle without external circuitry. |
| Internal compensation | Removes need for external compensation network - reduces BOM count and layout sensitivity for stable 5-V/600-mA designs. |
| High-voltage SHDN input | Accepts up to 60 V directly - allows direct connection to main rail for enable control without level-shifting resistors. |
| Pulse-by-pulse current limit | Clamps peak switch current at 1200 mA - prevents MOSFET failure during short-circuit or startup into heavy capacitive loads. |
Applications
| Grid Infrastructure Monitoring | Industrial Motor Drive Auxiliary Supply |
|---|---|
Use Scenario: Powering isolated ADCs, communication ICs, and fault-detection circuits in smart breakers and reclosers operating from 24–48-V DC bus with line transients. IC Role / Device Role / Timing Role: Primary buck regulator converting unregulated 48-V DC to stable 5-V rail for microcontrollers and RS-485 transceivers. Use Value: Withstands 65-V transients and operates down to 4 V, ensuring continuous operation during brownouts common in utility substations. |
Use Scenario: Generating 3.3-V or 5-V supply for gate drivers, position sensors, and MCU in 24-V or 48-V BLDC motor inverters. IC Role / Device Role / Timing Role: Compact, thermally robust step-down converter delivering 600 mA with minimal external components near heat-generating IGBT modules. Use Value: SOT-6L package and internal compensation simplify layout in space-constrained motor control boards; thermal shutdown prevents latch-up during overload conditions. |
| Appliance Control Board Power | Automotive Body Control Module (BCM) |
Use Scenario: Providing regulated 5-V supply for touch controllers, display drivers, and connectivity modules in washing machines and HVAC systems with 12–24-V battery or rectified AC input. IC Role / Device Role / Timing Role: Wide-input buck converter powering low-power subsystems where input voltage varies due to transformer regulation or battery discharge. Use Value: Eco-mode extends standby time in energy-efficient appliances; 770-kHz switching enables compact 22-µH inductor and 10-µF ceramic output capacitor solution. |
Use Scenario: Converting 12-V vehicle battery (with load dump spikes up to 65 V) to 3.3-V for CAN transceivers and microcontroller peripherals in BCMs. IC Role / Device Role / Timing Role: Input-hardened buck regulator meeting automotive transient immunity requirements without external TVS clamping. Use Value: 65-V transient rating and internal overtemperature protection meet AEC-Q100 stress test expectations for under-hood electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR36015RNXR | 60-V, 1.5-A, 2.1-MHz fixed-frequency buck; larger SOIC-8 package; higher current but no Eco-mode. | Better suited for higher-current auxiliary rails; lacks ultra-low IQ mode for battery-sensitive use cases. | Select when >600 mA output or faster transient response is required; not drop-in due to different pinout and package. |
| TPS54202HDDCR | 60-V, 2-A, 450-kHz adjustable-frequency buck; includes enable/PGOOD; 2.1-µA shutdown current. | Higher current and integrated power-good signaling; lower switching frequency increases inductor size. | Prefer for designs needing status feedback or dual-rail sequencing; requires external compensation and larger magnetics. |
Compared with LMR36015RNXR and TPS54202HDDCR, the LV2862XLVDDCT offers the smallest solution size (SOT-6L), lowest light-load IQ (28 µA), and simplest implementation (internal compensation), making it optimal for space- and power-constrained 600-mA applications where Eco-mode efficiency is critical.
Availability
LV2862XLVDDCT is available at Aetrix Electronics and suitable for grid infrastructure monitoring, industrial motor drive auxiliary supplies, and appliance control board power requiring stable component supply across extended product lifecycles.
Supply support for LV2862XLVDDCT 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 industrial and automotive power solutions.
The LV2862 family is designed for wide-input-voltage DC/DC conversion in harsh environments - targeting applications where input transients, thermal stress, and long-term reliability outweigh cost or feature density.
FAQ
What is the maximum duty cycle supported by the LV2862XLVDDCT?
The LV2862XLVDDCT supports up to 96% maximum duty cycle, enabled by its internal boot UVLO circuit that refreshes the CB capacitor during low-side conduction. This allows operation with very small VIN–VOUT differentials - for example, regulating 5 V from a 6-V input - without dropout or regulation loss, provided CB-to-SW voltage remains above 3 V.
Does the LV2862XLVDDCT require an external bootstrap diode?
No, the LV2862XLVDDCT integrates the bootstrap diode and refresh circuitry. A single 100-nF ceramic capacitor between CB and SW is sufficient to sustain gate drive for the internal high-side MOSFET. Adding an external diode is unnecessary and may interfere with the internal CB refresh mechanism.
Can the LV2862XLVDDCT be used with a 3.3-V output?
Yes, the LV2862XLVDDCT supports 3.3-V output using the FB pin and a resistor divider. With a 0.765-V internal reference, set R1 = 33.2 kΩ and R2 = 10 kΩ (1% tolerance) to achieve VOUT = 0.765 × (1 + 33.2/10) ≈ 3.3 V. Ensure the inductor and output capacitor are rated for the selected switching frequency (770 kHz) and load current.
What is the purpose of the SHDN pin's high-voltage tolerance on the LV2862XLVDDCT?
The SHDN pin on the LV2862XLVDDCT tolerates up to 60 V, allowing direct connection to the main input rail without level-shifting resistors. This simplifies enable control in systems where the same 24–48-V source powers both the converter input and system-level enable logic - especially valuable in grid and industrial equipment with shared power domains.
How does Eco-mode improve efficiency at light loads in the LV2862XLVDDCT?
Eco-mode in the LV2862XLVDDCT reduces switching frequency and gate drive activity under light loads (<10 mA), lowering dynamic losses. This cuts quiescent current to 28 µA - improving efficiency from ~65% to >85% at 1-mA load with 12-V input and 5-V output - extending battery life in always-on sensing applications without compromising regulation accuracy.
LV2862XLVDDCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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):
- 60V
- Current - Output:
- 600mA
- Frequency - Switching:
- 770kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
LV2862XLVDDCT FAQ
1.How can I place an order for LV2862XLVDDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for LV2862XLVDDCT 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 LV2862XLVDDCT reliable?
The price and inventory of LV2862XLVDDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV2862XLVDDCT is usually 5 days.
3.What payment methods are accepted for LV2862XLVDDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV2862XLVDDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV2862XLVDDCT?
LV2862XLVDDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV2862XLVDDCT 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 LV2862XLVDDCT?
For technical support, including LV2862XLVDDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV2862XLVDDCT requirements.
6.How does Aetrix verify that LV2862XLVDDCT is sourced from the original manufacturer or authorized distributors?
All LV2862XLVDDCT 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 LV2862XLVDDCT meets industry standards.
7.What is the process for return or replacement of LV2862XLVDDCT?
All LV2862XLVDDCT units undergo pre-shipment inspection (PSI). If there is an issue with LV2862XLVDDCT, 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 LV2862XLVDDCT part is unused and in its original packaging.
Return procedure for LV2862XLVDDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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