My Inquiry
My Account
Texas Instruments LMR14206XMKE/NOPB
- Part No.:
- LMR14206XMKE/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR14206XMKE/NOPB.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMR14206XMKE/NOPB from Texas Instruments is a PWM synchronous step-down DC/DC regulator in a 6-pin SOT-23-THIN (DDC) package, delivering up to 0.6A output current with input voltage range 4.5V–42V, fixed 1.25 MHz switching frequency, and 0.765V feedback reference voltage. It powers point-of-load rails in industrial distributed power systems and battery-powered handheld instruments.
For engineers reviewing the LMR14206XMKE/NOPB datasheet, LMR14206XMKE/NOPB pinout, LMR14206XMKE/NOPB application, or LMR14206XMKE/NOPB equivalent, key selection considerations include its 42V max input rating, internal 0.9Ω high-side MOSFET, soft-start implementation via SHDN pin, thermal shutdown at 175°C, and compatibility with WEBENCH® Power Designer for rapid design validation.
Technical Context
The LMR14206XMKE/NOPB integrates a current-mode PWM controller with internal high-side N-channel MOSFET, gate driver, error amplifier, bandgap reference, and protection circuitry including thermal shutdown, VIN under-voltage lockout (UVLO), and CB under-voltage lockout. Its fixed-frequency operation enables predictable EMI filtering and small external component selection.
It operates in continuous conduction mode (CCM) with cycle-by-cycle current limiting (1.15A typical), uses an external diode for synchronous rectification, and supports adjustable output voltages from 0.765V to 34V via resistor divider on FB pin. Soft-start is implemented by ramping SHDN pin voltage with an external RC network to modulate current limit during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 42V - supports wide-range unregulated inputs including 12V, 24V, and 42V industrial rails. |
| Output Current | Up to 0.6A - sufficient for powering microcontrollers, sensors, and analog front-ends in space-constrained designs. |
| Switching Frequency | 1.25 MHz (typ.) - enables use of compact 10–22 µH inductors and low-ESR ceramic capacitors. |
| Feedback Reference Voltage | 0.765V (±1.8%) - sets precise output regulation with external resistor divider; enables sub-1V outputs. |
| Quiescent Current | 16 µA (typ.) in shutdown - minimizes battery drain in always-on or low-power wake-up systems. |
| Thermal Shutdown Threshold | 175°C (typ.) - protects against sustained overload or poor PCB thermal design without requiring external monitoring. |
| Internal Switch RDS(ON) | 0.9Ω (typ.) - reduces conduction loss and improves efficiency up to 85% at mid-load conditions. |
Pinout & Package
LMR14206XMKE/NOPB is housed in a 6-pin SOT-23-THIN (DDC) package measuring 2.97 × 1.65 × 1.0 mm, optimized for high-density PCB layouts and automated assembly. The package features exposed pad for enhanced thermal performance and complies with JEDEC MO-193 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CB | Bootstrap capacitor connection | Provides gate drive voltage for internal high-side FET; requires 0.15 µF ceramic cap between CB and SW. |
| GND | Power ground reference | Primary return path for control circuitry and power stage; must be connected directly to system ground plane at COUT. |
| FB | Feedback input | Senses output voltage via resistor divider; regulates VOUT = 0.765V × (1 + R1/R2); bias current <1 µA. |
| SHDN | Logic-level enable/disable | Pull ≥2.3V to enable; ≤0.3V to disable; supports soft-start via RC ramp; leakage <1.5 µA. |
| VIN | Main power input | Accepts 4.5V–42V supply; includes UVLO (on at 4.4V, off at 3.5V) and overvoltage protection to 45V. |
| SW | Switch node output | Drives external Schottky diode and inductor; handles peak currents up to 1.15A; voltage swings from GND to VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated control loop | Eliminates need for external compensation components, reducing BOM count and layout complexity. |
| Short-circuit protected output | Current-limit protection engages at 1.15A (typ.), preventing damage during output faults or start-up into heavy loads. |
| Soft-start via SHDN pin | Enables user-defined startup time using external RC network, suppressing inrush current and minimizing output overshoot. |
| WEBENCH® Power Designer support | Full integration with TI's online design tool for schematic generation, efficiency simulation, and bill-of-materials export. |
| Low-profile 6-pin SOT-23-THIN package | 1.0 mm max height allows placement under connectors or in ultra-thin enclosures; compatible with standard SMT reflow profiles. |
Applications
| Industrial Power Meters | Battery-Powered Handheld Instruments |
|---|---|
Use Scenario: Powering metrology ICs, isolated ADCs, and wireless transceivers in utility-grade electricity meters operating from 18–42V DC bus. IC Role / Device Role / Timing Role: Primary buck regulator converting 24V rail to stable 3.3V or 5V for digital logic and analog signal chains. Use Value: 42V input rating tolerates line transients; 1.25 MHz switching avoids interference with PLC or RF bands; thermal shutdown ensures reliability in sealed enclosures. | Use Scenario: Supplying FPGA configuration memory, sensor interfaces, and Bluetooth LE radios in portable test equipment powered by single-cell Li-ion or dual-cell alkaline batteries. IC Role / Device Role / Timing Role: Point-of-load converter stepping down variable battery voltage (4.5–12V) to regulated 1.2V or 3.3V rails. Use Value: 16 µA shutdown current extends battery life; adjustable output supports multiple voltage domains; compact SOT-23-THIN fits tight board real estate. |
| Space-Constrained Industrial Controllers | Distributed 5V/12V Point-of-Load Conversion |
Use Scenario: Providing clean 3.3V for ARM Cortex-M microcontrollers and CAN transceivers inside DIN-rail mounted PLC I/O modules with limited PCB area. IC Role / Device Role / Timing Role: Secondary regulator deriving 3.3V from internal 5V or 12V backplane supply. Use Value: Internal compensation eliminates tuning effort; 0.765V reference enables accurate low-voltage regulation; 6-pin SOT footprint saves >40% board space vs. SOIC alternatives. | Use Scenario: Generating local 5V or 12V supplies from higher-voltage distribution rails (e.g., 24V) in factory automation controllers and motor drives. IC Role / Device Role / Timing Role: Buck converter delivering up to 0.6A at fixed 5V or 12V output with minimal external components. Use Value: 1.25 MHz operation allows 10 µH inductor and 22 µF ceramic output cap; efficiency >85% reduces thermal load in enclosed cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14006XDDAR | 40V max input, 600mA output, same SOT-23-6 package but DDA (non-thin) variant; 1.25 MHz switching; 0.765V FB reference. | Higher thermal resistance (135°C/W vs. 121°C/W); slightly lower max input voltage; identical control architecture. | Preferred where legacy DDA footprint is already used; verify thermal margin due to higher θJA. |
| TPS62130ARGTR | 6V max input, 3A output, 2.5MHz switching, integrated synchronous rectifier, 0.6V FB reference; 16-pin QFN package. | Not pin-compatible; much higher current capability; unsuitable for >12V input; requires different layout and compensation. | Select when higher output current and synchronous efficiency are required in low-input-voltage systems (<6V). |
Compared with LMR14206XMKE/NOPB, LMR14006XDDAR offers identical functionality in a non-thin SOT-23 package with marginally reduced thermal performance, while TPS62130ARGTR provides higher current and efficiency at the cost of input voltage range and package compatibility-making LMR14206XMKE/NOPB optimal for 4.5–42V, 0.6A space-constrained applications.
Availability
LMR14206XMKE/NOPB is available at Aetrix Electronics and suitable for industrial power meters, battery-powered handheld instruments, space-constrained industrial controllers, and distributed 5V/12V point-of-load conversion requiring stable component supply across long production lifecycles.
Supply support for LMR14206XMKE/NOPB 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies with over 90 years of innovation in industrial, automotive, and consumer electronics.
The LMR14206XMKE/NOPB belongs to TI's SIMPLE SWITCHER® family of easy-to-use DC/DC regulators, designed specifically for engineers needing robust, low-component-count power solutions for harsh industrial environments and portable equipment.
FAQ
What is the maximum input voltage rating for the LMR14206XMKE/NOPB?
The LMR14206XMKE/NOPB has an absolute maximum input voltage rating of +45V, with normal operating range specified from 4.5V to 42V. Exceeding 42V may trigger overvoltage protection or cause permanent damage; operation above 45V violates Absolute Maximum Ratings and risks device failure. Always maintain input transient suppression within this limit.
Does the LMR14206XMKE/NOPB require external compensation components?
No, the LMR14206XMKE/NOPB features an internally compensated control loop, eliminating the need for external compensation networks. This simplifies design, reduces BOM count, and ensures stable operation across all supported output voltages and load conditions without tuning.
Can the LMR14206XMKE/NOPB generate an output voltage below 1V?
Yes, the LMR14206XMKE/NOPB can generate output voltages as low as 0.765V using the internal 0.765V feedback reference. For example, a 0.8V output is achievable with R1 = 30.9Ω and R2 = 787Ω per the equation VOUT = 0.765V × (1 + R1/R2), as shown in Figure 13 of the datasheet.
What is the purpose of the CB pin on the LMR14206XMKE/NOPB?
The CB pin on the LMR14206XMKE/NOPB provides gate drive voltage for the internal high-side MOSFET. A 0.15 µF ceramic bootstrap capacitor must be placed between CB and SW to ensure sufficient gate-source voltage during switching cycles, maintaining low RDS(ON) and high efficiency.
How does the LMR14206XMKE/NOPB implement soft-start functionality?
The LMR14206XMKE/NOPB implements soft-start by applying a controlled voltage ramp to the SHDN pin using an external RC network. As SHDN voltage rises from 0V to 2.3V, the internal current limit increases proportionally from minimum to full 1.15A, controlling output rise time and suppressing inrush current without requiring additional ICs.
LMR14206XMKE/NOPB 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):
- 4.5V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 0.765V
- Voltage - Output (Max):
- 34V
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.25MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
LMR14206XMKE/NOPB FAQ
1.How can I place an order for LMR14206XMKE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR14206XMKE/NOPB 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 LMR14206XMKE/NOPB reliable?
The price and inventory of LMR14206XMKE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR14206XMKE/NOPB is usually 5 days.
3.What payment methods are accepted for LMR14206XMKE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR14206XMKE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR14206XMKE/NOPB?
LMR14206XMKE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR14206XMKE/NOPB 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 LMR14206XMKE/NOPB?
For technical support, including LMR14206XMKE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR14206XMKE/NOPB requirements.
6.How does Aetrix verify that LMR14206XMKE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR14206XMKE/NOPB 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 LMR14206XMKE/NOPB meets industry standards.
7.What is the process for return or replacement of LMR14206XMKE/NOPB?
All LMR14206XMKE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR14206XMKE/NOPB, 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 LMR14206XMKE/NOPB part is unused and in its original packaging.
Return procedure for LMR14206XMKE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMR14206XMKE/NOPB Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
