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Texas Instruments LMR62014XMFX/NOPB
- Part No.:
- LMR62014XMFX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMR62014XMFX/NOPB.pdf
- Description:
- IC REG BOOST ADJ 2A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,658
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Product details
Overview
LMR62014XMFX/NOPB from Texas Instruments is a current-mode, fixed-frequency (1.6 MHz) step-up DC-DC switching regulator in SOT-23-5 package, delivering up to 20 V output from 2.7–14 V input with internal 1.4 A FET switch, cycle-by-cycle current limiting, and <1 µA shutdown quiescent current. It enables compact boost conversion for space-constrained LED drivers and LCD bias supplies.
For engineers reviewing the LMR62014XMFX/NOPB datasheet, LMR62014XMFX/NOPB pinout, LMR62014XMFX/NOPB application, or LMR62014XMFX/NOPB equivalent, key selection criteria include input voltage range (2.7–14 V), maximum duty cycle (93%), feedback reference voltage (1.23 V), thermal shutdown protection, and SOT-23-5 footprint compatibility with WEBENCH® Power Designer support.
Technical Context
The LMR62014XMFX/NOPB employs peak-current-mode control with an internal ramp generator and PWM comparator, using the SW node voltage drop across the integrated FET to sense switch current. Its 1.6 MHz switching frequency enables use of small external components-10 µH inductors and 2.2–4.7 µF ceramic capacitors-while maintaining stable regulation across load currents up to 500 mA at 12 V output.
Internal compensation eliminates need for external loop compensation components, and the FB pin accepts a resistive divider to set output voltage from 5.4 V (VIN = 2.7 V) to 20 V. Shutdown logic is active-low with 0.5 V turn-off threshold and 1.5 V turn-on threshold, supporting battery-powered systems requiring ultra-low idle power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 14 V - supports single-cell Li-ion, 3.3 V/5 V rails, and 12 V industrial inputs without pre-regulation. |
| Output Voltage Range | Up to 20 V - programmable via external resistor divider; minimum regulated output is 5.4 V at VIN = 2.7 V. |
| Switch Current Limit | 1.4 A typical - sets maximum deliverable power; actual limit varies with duty cycle (e.g., ~2.0 A at low DC, ~1.4 A at 90% DC). |
| Switching Frequency | 1.6 MHz ±15% - enables compact magnetics and low-output-ripple designs; fixed frequency simplifies EMI filtering. |
| Feedback Reference Voltage | 1.230 V ±25 mV - defines output voltage scaling ratio; tight tolerance ensures accurate output setting over temperature. |
| Shutdown Quiescent Current | <1 µA - extends battery life in always-on systems; SHDN pin must be pulled low to achieve this state. |
| Max Duty Cycle | 93% - enables high boost ratios (e.g., 3.3 V → 12 V or 5 V → 18 V) while maintaining continuous conduction mode. |
Pinout & Package
LMR62014XMFX/NOPB uses a 5-pin SOT-23 (DBV) package measuring 2.92 × 2.84 × 1.08 mm, with exposed pad not electrically connected. Thermal resistance θJ-A is 265°C/W. Pin 1 (SW) is located at top-left corner when marking side faces up and notch/polarity indicator is left-aligned.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Drain of internal N-channel MOSFET | Connects to inductor and Schottky diode anode; carries pulsed high-current switching waveform; requires short, low-inductance PCB trace. |
| GND | Analog and power ground reference | Common return for feedback, shutdown, and internal circuitry; must connect to low-impedance ground plane near device. |
| FB | Feedback input for output voltage regulation | Monitors resistive divider output; internal 1.23 V reference compares against this node to adjust duty cycle. |
| SHDN | Active-low enable/disable control | Pull below 0.5 V to disable; tie to VIN or use 50–100 kΩ pull-up if unused; <1 µA leakage in shutdown. |
| VIN | Power input supply | Accepts 2.7–14 V; powers internal circuitry and FET gate driver; requires local 2.2 µF ceramic decoupling capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated control loop | Eliminates external compensation network; reduces BOM count and layout sensitivity while ensuring stability with standard 10 µH inductors. |
| Cycle-by-cycle current limiting | Prevents switch overcurrent during startup, short-circuit, or overload; resets each clock cycle independent of feedback loop response. |
| Thermal shutdown protection | Activates at TJ ≥ 125°C; reduces output voltage to limit power dissipation until junction cools below hysteresis threshold (~115°C). |
| Logic-level shutdown interface | Compatible with 1.8 V, 3.3 V, and 5 V microcontrollers; no level-shifting required; supports system-level power sequencing. |
| WEBENCH® Power Designer enabled | Full schematic, bill-of-materials, efficiency simulation, and thermal analysis available directly from TI's online design tool. |
Applications
| LED Backlighting | LCD Bias Supply |
|---|---|
Use Scenario: Driving white LEDs in portable displays requiring constant-current sources with 12–18 V forward voltage. IC Role / Device Role / Timing Role: Step-up regulator providing stable, adjustable high-voltage rail to LED driver IC or current-sink array. Use Value: Delivers >90% efficiency at 200–400 mA loads; 1.6 MHz operation minimizes visible PWM flicker and enables tiny 10 µH inductors. |
Use Scenario: Generating positive and negative bias voltages (e.g., +15 V / –10 V) for TFT-LCD source/gate drivers. IC Role / Device Role / Timing Role: Primary positive boost stage feeding charge-pump or inverting regulator; operates continuously under steady-state display conditions. Use Value: 93% max duty cycle supports 3.3 V → 15 V conversion; internal current limit protects against panel short-circuit events. |
| Portable Instrumentation | Industrial Sensor Interface |
Use Scenario: Powering analog front-ends (e.g., op-amps, ADC references) requiring clean 5 V or 12 V rails from single 3.3 V Li-ion cell. IC Role / Device Role / Timing Role: Compact, low-noise boost converter placed near signal chain; shutdown controlled by host MCU during sleep cycles. Use Value: <1 µA shutdown IQ extends battery runtime; 1.23 V FB reference enables precise output setting for reference stability. |
Use Scenario: Supplying isolated RS-485 transceivers or 4–20 mA loop drivers needing 12–20 V auxiliary power from 5 V system bus. IC Role / Device Role / Timing Role: Local boost stage on sensor node PCB; operates at fixed 1.6 MHz to avoid interference with sensitive analog measurements. Use Value: SOT-23-5 footprint fits dense industrial modules; thermal shutdown prevents latch-up during field wiring faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRVR | Fixed 28 V output; 0.5 A switch current; 1.0 MHz switching frequency; different FB reference (1.245 V). | Not adjustable beyond 28 V; lower current capability limits use in >300 mA 12 V applications. | Select when fixed high-voltage output suffices and board space allows larger solution size. |
| MAX17222ETA+ | 1.2 A switch current; 2.5 MHz switching; 1.212 V FB reference; smaller 2 mm × 2 mm 6-pin WLP package. | Higher frequency enables smaller inductors but increases switching losses above 12 V output. | Prefer for ultra-compact designs where 1.2 A peak current meets load requirements and thermal margin permits. |
Compared with LMR62014XMFX/NOPB, TPS61040DRVR offers simpler fixed-output implementation but lacks programmability and current headroom, while MAX17222ETA+ achieves higher integration density at the cost of reduced peak current and narrower input range (0.7–5.5 V).
Availability
LMR62014XMFX/NOPB is available at Aetrix Electronics and suitable for LED backlighting, LCD bias supplies, portable instrumentation, and industrial sensor interfaces requiring stable component supply with full production lifecycle support.
Supply support for LMR62014XMFX/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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC-DC conversion.
The LMR62014XMFX/NOPB belongs to TI's SIMPLE SWITCHER® family, designed specifically for ease-of-use, minimal external component count, and robust performance in space-constrained industrial and portable power applications.
FAQ
What is the maximum output voltage achievable with LMR62014XMFX/NOPB?
The LMR62014XMFX/NOPB supports output voltages up to 20 V, limited by its absolute maximum SW pin voltage rating of +22 V and internal switch breakdown characteristics. At VIN = 5 V, typical applications achieve 12–18 V outputs with >85% efficiency; outputs above 18 V require careful attention to diode voltage rating and layout parasitics to maintain stability and reliability.
Does LMR62014XMFX/NOPB require external compensation components?
No, LMR62014XMFX/NOPB features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. However, a feed-forward capacitor (CF ≈ 330 pF) is mandatory across the upper feedback resistor to ensure loop stability and prevent oscillation-this is not compensation but a zero placement for transient response optimization.
What is the recommended Schottky diode for use with LMR62014XMFX/NOPB?
Texas Instruments recommends the MBR0520 (20 V, 0.5 A) Schottky diode for general-purpose LMR62014XMFX/NOPB applications. For loads exceeding 500 mA average current, the Toshiba CRS08 (20 V, 0.8 A) is specified. Diode selection must ensure VR ≥ 20 V and IF(AV) ≥ peak load current plus ripple margin, with low forward voltage to preserve efficiency.
How does shutdown current behave in LMR62014XMFX/NOPB?
In shutdown mode (SHDN pin < 0.5 V), LMR62014XMFX/NOPB draws less than 1 µA total supply current, verified across −40°C to +125°C. This ultra-low IQ is achieved by disabling the oscillator, gate driver, and error amplifier while retaining basic bias functionality-critical for battery-powered devices requiring multi-year shelf life.
Can LMR62014XMFX/NOPB operate with input voltage below 2.7 V?
No-LMR62014XMFX/NOPB has a guaranteed minimum operating input voltage of 2.7 V per datasheet Absolute Maximum Ratings and Electrical Characteristics. Operation below this threshold may result in erratic regulation, failure to start, or undefined behavior; for sub-2.7 V inputs, consider TI's TPS61200 or similar ultra-low-VIN boost regulators.
LMR62014XMFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 14V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 20V
- Current - Output:
- 2A (Switch)
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMR62014XMFX/NOPB FAQ
1.How can I place an order for LMR62014XMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR62014XMFX/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 LMR62014XMFX/NOPB reliable?
The price and inventory of LMR62014XMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR62014XMFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMR62014XMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR62014XMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR62014XMFX/NOPB?
LMR62014XMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR62014XMFX/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 LMR62014XMFX/NOPB?
For technical support, including LMR62014XMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR62014XMFX/NOPB requirements.
6.How does Aetrix verify that LMR62014XMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR62014XMFX/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 LMR62014XMFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMR62014XMFX/NOPB?
All LMR62014XMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR62014XMFX/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 LMR62014XMFX/NOPB part is unused and in its original packaging.
Return procedure for LMR62014XMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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