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Texas Instruments LMR12010XMKE/NOPB
- Part No.:
- LMR12010XMKE/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR12010XMKE/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,697
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Product details
Overview
LMR12010XMKE/NOPB from Texas Instruments is a monolithic 1.6 MHz PWM step-down DC/DC regulator in a 6-pin SOT-23-THIN package, delivering up to 1 A output current with input range 3 V–20 V and adjustable output from 0.8 V–17 V. It integrates an internal 300 mΩ NMOS switch, current-mode control, and internal compensation for compact point-of-load conversion in space-constrained industrial and portable systems.
For engineers reviewing the LMR12010XMKE/NOPB datasheet, LMR12010XMKE/NOPB pinout, LMR12010XMKE/NOPB application, or LMR12010XMKE/NOPB equivalent, key selection considerations include its 1.6 MHz fixed switching frequency, 30 nA shutdown IQ, 0.8 V feedback reference, thermal shutdown protection, and compatibility with ceramic output capacitors and small-signal inductors.
Technical Context
The LMR12010XMKE/NOPB implements constant-frequency current-mode PWM control with internal slope compensation and a 0.8 V precision feedback reference. Its 13 ns minimum on-time supports high duty-cycle operation down to 0.8 V output across the full 3 V–20 V input range.
It features integrated soft-start (200 µs ramp), cycle-by-cycle current limiting (1.7 A typical), undervoltage lockout (2.9 V rising threshold, 440 mV hysteresis), and output overvoltage protection triggered at 10% above VFB. The BOOST pin enables gate drive for the internal NMOS using external bootstrap capacitor topology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 20 V - supports direct regulation from common rails (3.3 V, 5 V, 12 V) without pre-regulation |
| Output Current | Up to 1 A - sufficient for microcontroller cores, sensors, and interface ICs in compact systems |
| Switching Frequency | 1.6 MHz - enables use of ≤4.7 µH inductors and low-ESR ceramic capacitors, minimizing solution footprint |
| Feedback Reference | 0.800 V ±2% - sets output voltage via external resistor divider; enables precise low-VOUT designs |
| Shutdown Quiescent Current | 30 nA typical - preserves battery life in always-on or sleep-mode applications |
| Internal Switch RDS(ON) | 300 mΩ typical - reduces conduction loss and simplifies thermal design in 1-A loads |
| Thermal Shutdown Threshold | 165°C junction - protects against sustained overload or poor PCB thermal layout |
Pinout & Package
LMR12010XMKE/NOPB uses a 6-pin SOT-23-THIN package (2.90 mm × 1.60 mm × 1.00 mm), optimized for high-density layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BOOST | Bootstrap supply | Drives NMOS gate during on-time; requires external capacitor between BOOST and SW to sustain >2.5 V gate overdrive |
| 2 - GND | Signal & power ground | Reference for FB divider and internal circuits; bottom resistor of feedback network must connect here for accuracy |
| 3 - FB | Feedback input | Senses output voltage via resistor divider; 0.8 V reference enables wide VOUT range (0.8 V–17 V) |
| 4 - EN | Enable control | Logic-high (>1.8 V) enables regulation; logic-low (<0.4 V) disables with 30 nA IQ; must not float or exceed VIN + 0.3 V |
| 5 - VIN | Main input supply | Accepts 3 V–20 V; requires local 10 µF ceramic bypass capacitor near pin for transient stability |
| 6 - SW | Switch node | Connects to inductor, catch diode, and BOOST capacitor; carries high di/dt; requires tight layout to minimize EMI |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated | Eliminates need for external compensation network - reduces BOM count and design iteration time |
| Current-mode PWM control | Provides inherent cycle-by-cycle current limiting and fast transient response to load steps |
| 13 ns minimum on-time | Enables high step-down ratios (e.g., 12 V → 0.8 V at 1.6 MHz) without pulse-skipping instability |
| Internal soft-start (200 µs) | Controls output ramp rate to limit inrush current into large output capacitance or downstream loads |
| Output overvoltage protection | Shuts off SW when FB exceeds 0.88 V - prevents damage to downstream 1.8 V or 3.3 V logic |
Applications
| Point-of-Load Conversion | Battery-Powered Instruments |
|---|---|
Use Scenario: Local 3.3 V or 1.8 V rail generation from a 5 V or 12 V system bus in industrial PLC modules. IC Role / Device Role / Timing Role: Primary buck regulator providing regulated power to MCU core, ADC, and communication peripherals. Use Value: 1.6 MHz operation allows 2.2 µH–4.7 µH inductors and 10–22 µF X5R ceramics, reducing total solution area to <25 mm². | Use Scenario: Power management in handheld test equipment with Li-ion battery input (3.0 V–4.2 V). IC Role / Device Role / Timing Role: Main DC/DC converter stepping down battery voltage to stable 3.3 V for display driver and sensor interface. Use Value: 30 nA shutdown IQ extends shelf life and standby runtime; thin SOT-23 package fits narrow PCB form factors. |
| Industrial Distributed Power | Power Metering Systems |
Use Scenario: Isolated auxiliary supply in DIN-rail mounted I/O modules requiring clean 5 V for analog front-end and isolation drivers. IC Role / Device Role / Timing Role: Non-isolated buck stage following isolated DC/DC; delivers low-noise 5 V with minimal board space. Use Value: Internal compensation and current-mode control ensure stable regulation despite input ripple from upstream converters. | Use Scenario: Metering IC power rail in smart electricity meters operating from 3-phase rectified input (12 V–20 V). IC Role / Device Role / Timing Role: High-efficiency buck regulator powering metrology SoC and RTC circuitry under varying line conditions. Use Value: 90% peak efficiency at 1 A and UVLO hysteresis prevent brownout resets during grid voltage sags. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR12008XMKE/NOPB | Same SOT-23-THIN package; 0.8 A output current; 1.6 MHz switching frequency; identical pinout and control architecture | Lower max load capability - suitable where 0.8 A suffices and cost reduction is prioritized | Select when full 1 A is not required; shares same layout and bill-of-materials except output inductor/capacitor ratings |
| TPS62130ARGTR | 3 MHz switching frequency; 3 A output; 2.5 V–6 V input range; 3 × 3 mm QFN-16 package; requires external compensation | Higher current, narrower input range, larger footprint - targets higher-power portable applications | Choose for >1 A loads or tighter input constraints; not drop-in due to different package, pin count, and compensation requirements |
Compared with LMR12010XMKE/NOPB, LMR12008XMKE/NOPB offers identical integration and layout compatibility at reduced current capacity, while TPS62130ARGTR provides higher output current and frequency at the cost of increased complexity, size, and input voltage limitation.
Availability
LMR12010XMKE/NOPB is available at Aetrix Electronics and suitable for point-of-load conversions, battery-powered instruments, and industrial distributed power applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LMR12010XMKE/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 specializing in analog, embedded processing, and power management technologies, with leadership in high-efficiency DC/DC conversion and automotive-grade reliability.
The LMR12010XMKE/NOPB belongs to TI's LMR family of high-frequency monolithic buck regulators, designed specifically for space-constrained, high-density power delivery in industrial, test & measurement, and portable electronics.
FAQ
What is the switching frequency of the LMR12010XMKE/NOPB?
The LMR12010XMKE/NOPB operates at a fixed 1.6 MHz switching frequency. This value is internally set and cannot be adjusted externally. The 1.6 MHz frequency enables compact designs using small inductors (e.g., 2.2 µH–4.7 µH) and ceramic output capacitors, while maintaining high efficiency (up to 90%) across its 3 V–20 V input range. Note that the LMR12010YMKE/NOPB variant runs at 3 MHz.
Does the LMR12010XMKE/NOPB require external compensation components?
No, the LMR12010XMKE/NOPB is internally compensated. Its control loop is fully optimized for stability with standard external components (inductor, input/output capacitors, feedback resistors). No external compensation network (e.g., type-II or type-III compensator) is needed, reducing BOM count and simplifying layout. This internal compensation is validated across the full operating temperature range (−40°C to +125°C) and input/output conditions.
What is the minimum output voltage achievable with the LMR12010XMKE/NOPB?
The LMR12010XMKE/NOPB supports a minimum output voltage of 0.8 V, set by its internal 0.800 V ±2% feedback reference voltage. Using a standard resistor divider on the FB pin, users can configure outputs from 0.8 V up to 17 V. The 13 ns minimum on-time ensures stable regulation even at high step-down ratios (e.g., 12 V → 0.8 V at 1.6 MHz), avoiding pulse-skipping mode and associated light-load inefficiency.
How does the BOOST pin function in the LMR12010XMKE/NOPB?
The BOOST pin on the LMR12010XMKE/NOPB supplies gate drive voltage to the internal NMOS switch. It connects via an external ceramic capacitor (typically 0.1 µF) to the SW pin to form a bootstrap circuit. During the switch off-time, the capacitor charges from VIN (or VOUT); during on-time, it elevates the gate voltage above SW to ensure full enhancement of the NMOS. For reliable 1 A operation, VBOOST − VSW must remain ≥2.5 V - below this, RDS(ON) increases and efficiency drops.
Is the LMR12010XMKE/NOPB suitable for battery-powered applications with long standby time?
Yes, the LMR12010XMKE/NOPB is well-suited for battery-powered applications requiring ultra-low quiescent current. In shutdown mode (EN = low), its typical quiescent current is only 30 nA - significantly lower than most competing buck regulators. Combined with its ability to operate down to 3 V input, this enables multi-year battery life in always-on sensors, remote monitors, and portable instrumentation where standby power dominates total energy consumption.
LMR12010XMKE/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):
- 3V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 1A
- 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-THIN
LMR12010XMKE/NOPB FAQ
1.How can I place an order for LMR12010XMKE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR12010XMKE/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 LMR12010XMKE/NOPB reliable?
The price and inventory of LMR12010XMKE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR12010XMKE/NOPB is usually 5 days.
3.What payment methods are accepted for LMR12010XMKE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR12010XMKE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR12010XMKE/NOPB?
LMR12010XMKE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR12010XMKE/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 LMR12010XMKE/NOPB?
For technical support, including LMR12010XMKE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR12010XMKE/NOPB requirements.
6.How does Aetrix verify that LMR12010XMKE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR12010XMKE/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 LMR12010XMKE/NOPB meets industry standards.
7.What is the process for return or replacement of LMR12010XMKE/NOPB?
All LMR12010XMKE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR12010XMKE/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 LMR12010XMKE/NOPB part is unused and in its original packaging.
Return procedure for LMR12010XMKE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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