My Inquiry
My Account
Texas Instruments LMR12010YMKX/NOPB
- Part No.:
- LMR12010YMKX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR12010YMKX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,205
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMR12010YMKX/NOPB from Texas Instruments is a 3-V to 20-V input, 1-A synchronous step-down DC/DC switching regulator in a 6-pin SOT-23-THIN package, operating at a fixed 3 MHz switching frequency with internal compensation and current-mode PWM control. It delivers regulated output voltages from 0.8 V to 17 V and features ultra-low 30 nA shutdown quiescent current, thermal shutdown, and output overvoltage protection - used in space-constrained point-of-load conversions for industrial and portable instrumentation.
For engineers reviewing the LMR12010YMKX/NOPB datasheet, LMR12010YMKX/NOPB pinout, LMR12010YMKX/NOPB application, or LMR12010YMKX/NOPB equivalent, key selection considerations include its 3 MHz fixed-frequency operation, 300 mΩ internal NMOS switch RDS(ON), 0.8 V feedback reference, 1.7 A typical current limit, and compatibility with ceramic output capacitors and sub-2.2 µH inductors for minimal PCB footprint.
Technical Context
The LMR12010YMKX/NOPB implements constant-frequency current-mode PWM control with an internal 300 mΩ NMOS power switch and integrated soft-start circuitry. Its 3 MHz oscillator enables on-times as low as 13 ns, supporting high conversion ratios down to 0.8 V output across the full 3–20 V input range while maintaining stable regulation without external compensation.
It uses bootstrap gate drive (BOOST–SW ≥ 2.5 V) for the internal switch, includes cycle-by-cycle current limiting (1.7 A typ), undervoltage lockout (2.74 V rising threshold), and thermal shutdown activation at 165°C junction temperature - all implemented in a monolithic BiCMOS process optimized for power density and transient response.
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 continuous - sufficient for microcontroller cores, FPGAs, and analog signal chains in compact systems. |
| Switching Frequency | 3 MHz (fixed) - enables use of ≤2.2 µH inductors and small ceramic output capacitors, minimizing solution size. |
| Feedback Reference | 0.800 V (±2%) - sets output voltage via external resistor divider; enables precise low-voltage regulation (e.g., 1.2 V, 1.8 V). |
| RDS(ON) | 300 mΩ (typ) - limits conduction loss at 1 A load, contributing to >90% peak efficiency in typical configurations. |
| Shutdown IQ | 30 nA (typ) - preserves battery life in always-on or sleep-mode applications such as portable meters and sensors. |
| Current Limit | 1.7 A (typ) - provides robust short-circuit and overload protection without external sensing components. |
Pinout & Package
Package: SOT-23-THIN (6-pin), body size 2.90 mm × 1.60 mm × 1.00 mm - optimized for high-density PCB layouts with minimal thermal mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BOOST | Bootstrap supply for NMOS gate drive | Must be ≥2.5 V above SW during on-time; connects to external capacitor between BOOST and SW pins. |
| 2 - GND | Signal and power ground reference | Return path for feedback network and internal regulators; requires low-impedance connection to minimize regulation error. |
| 3 - FB | Output voltage feedback input | Senses divided output voltage; internal 0.8 V reference enables programmable VOUT = 0.8 × (1 + R1/R2). |
| 4 - EN | Enable/shutdown control | Logic-high (>1.8 V) enables operation; logic-low (<0.4 V) disables switching and reduces IQ to 30 nA. |
| 5 - VIN | Main input supply | Accepts 3–20 V; requires local 10 µF ceramic bypass capacitor placed near pin to suppress switching transients. |
| 6 - SW | Internal switch node | Connects to inductor and catch diode; swings between ~0 V (off) and VIN − ILOAD×RDS(ON) (on). |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated current-mode control | Eliminates need for external compensation network - simplifies design and improves stability across load/line variations. |
| 3 MHz fixed switching frequency | Enables <2.2 µH inductors and chip-scale ceramic capacitors - reduces total solution area to <25 mm². |
| Ultra-low shutdown quiescent current | 30 nA typical - extends battery runtime in always-on sensor nodes and handheld instruments. |
| Integrated soft-start | 200 µs internal reference ramp - controls output voltage rise time to limit inrush current into large output capacitance. |
| Output overvoltage protection | Shuts off switch when FB exceeds 0.88 V (10% above 0.8 V reference) - prevents damage to downstream loads. |
Applications
| Industrial Power Meters | Portable Hand-Held Instruments |
|---|---|
|
Use Scenario: Compact, battery-powered electricity meter requiring isolated 3.3 V and 1.8 V rails from a 9 V primary cell or 12 V bus. IC Role / Device Role / Timing Role: Primary step-down regulator delivering 1 A at 3.3 V with fast transient response to handle pulse-based measurement bursts. Use Value: 3 MHz operation allows use of 2.2 µH inductor and 10 µF ceramic output capacitor - enabling full power stage within 12 mm × 12 mm board area. |
Use Scenario: Multifunction test instrument with ARM Cortex-M7 MCU, ADC, and LCD display powered from dual Li-ion cells (6–8.4 V). IC Role / Device Role / Timing Role: Point-of-load converter generating stable 1.2 V core voltage for the processor under dynamic load conditions. Use Value: 0.8 V feedback reference and ±2% tolerance enable accurate 1.2 V output using standard 1% resistors; 30 nA shutdown IQ extends standby time to >1 year. |
| Space-Constrained IoT Edge Nodes | Distributed Industrial Control Modules |
|
Use Scenario: Wireless sensor node with LoRaWAN radio, temperature/humidity sensor, and flash memory - housed in IP67 enclosure with strict volume limits. IC Role / Device Role / Timing Role: Single-chip 1 A buck regulator powering entire system from 3.6 V Li-SOCl₂ primary battery. Use Value: SOT-23-THIN package (2.9 × 1.6 mm) and internal compensation reduce BOM count to only 5 external components - accelerating layout and validation. |
Use Scenario: DIN-rail mounted PLC I/O module converting 24 V DC field supply to 5 V and 3.3 V for logic and communication interfaces. IC Role / Device Role / Timing Role: Secondary regulator providing clean 5 V rail for RS-485 transceivers and optocouplers in electrically noisy factory environments. Use Value: 20 V max input rating and thermal shutdown (165°C) ensure reliable operation during 24 V surges and ambient temperatures up to 70°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 2.7–6 V input, 3 MHz, 3 A output, QFN-16 package (3 × 3 mm) | Higher current, narrower input range - suited for 3.3 V/5 V systems only; not drop-in for 12–20 V inputs. | Select when >1 A load or lower-profile QFN is required; requires PCB redesign due to different pinout and package. |
| MP2143GJ-Z | 4.5–28 V input, 3 MHz, 1.2 A, SOT-563 (2.9 × 1.6 mm), no internal BOOT diode | Wider input range and higher current, but requires external bootstrap diode and careful layout for BOOT stability. | Choose for 24 V industrial inputs where LMR12010YMKX/NOPB's 20 V limit is insufficient; verify BOOT loop stability in final design. |
Compared with TPS62130ARGTR and MP2143GJ-Z, the LMR12010YMKX/NOPB offers optimal balance of 20 V input capability, 1 A output, and SOT-23-THIN footprint - making it uniquely suitable for compact 12 V–20 V point-of-load designs where board area is constrained and external components must be minimized.
Availability
LMR12010YMKX/NOPB is available at Aetrix Electronics and suitable for industrial distributed power applications, portable hand-held instruments, and space-constrained IoT edge nodes requiring stable component supply and long-term production continuity.
Supply support for LMR12010YMKX/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 ICs, with leadership in high-efficiency DC/DC conversion and automotive-grade reliability.
The LMR12010YMKX/NOPB belongs to TI's LMR series of monolithic step-down regulators designed for high-power-density point-of-load conversion in industrial, test & measurement, and portable equipment - emphasizing minimal external components and robust thermal performance.
FAQ
What is the switching frequency of the LMR12010YMKX/NOPB?
The LMR12010YMKX/NOPB operates at a fixed 3 MHz switching frequency, as indicated by the "Y" suffix in its part number. This high frequency enables use of very small inductors (e.g., 2.2 µH) and ceramic output capacitors, reducing overall solution size. The frequency is internally set and not adjustable - confirmed in the Electrical Characteristics table (FSW = 2.2–3.6 MHz, typ 3.0 MHz) and Functional Description section of the datasheet.
Does the LMR12010YMKX/NOPB require external compensation components?
No, the LMR12010YMKX/NOPB is internally compensated. Its current-mode control architecture and built-in compensation network eliminate the need for external Type-II or Type-III compensation networks. This is explicitly stated in the Features list ("Internally Compensated") and Detailed Description section, allowing designers to implement a complete 1 A buck regulator with only five external components: input/output capacitors, inductor, feedback divider, and bootstrap capacitor.
What is the minimum output voltage supported by the LMR12010YMKX/NOPB?
The LMR12010YMKX/NOPB supports a minimum output voltage of 0.8 V, set by its internal feedback reference voltage (VFB = 0.800 V ±2%). Using a resistor divider on the FB pin, output voltages from 0.8 V to 17 V can be programmed. This 0.8 V reference enables regulation of modern low-voltage digital cores (e.g., 1.0 V, 1.2 V, 1.8 V) with high accuracy - verified in the Electrical Characteristics table and Typical Application schematic.
How does the enable (EN) pin function on the LMR12010YMKX/NOPB?
The EN pin on the LMR12010YMKX/NOPB provides logic-level shutdown control: applying ≥1.8 V (typ) enables regulation, while ≤0.4 V (typ) disables switching and reduces quiescent current to 30 nA. The pin must never exceed VIN + 0.3 V, and should not be left floating. This feature is critical for battery-powered applications requiring deep-sleep modes - detailed in Section 7.3.2 (Enable Pin / Shutdown Mode) and Absolute Maximum Ratings.
What package type is used for the LMR12010YMKX/NOPB?
The LMR12010YMKX/NOPB is packaged in a 6-pin SOT-23-THIN (DDC) package with nominal dimensions of 2.90 mm × 1.60 mm × 1.00 mm. This ultra-compact, surface-mount package is specified in the Device Information table and Pin Configuration section of the datasheet, and is distinct from standard SOT-23 due to reduced height and tighter pitch - enabling high-density PCB layouts in space-constrained applications.
LMR12010YMKX/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:
- 3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
LMR12010YMKX/NOPB FAQ
1.How can I place an order for LMR12010YMKX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR12010YMKX/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 LMR12010YMKX/NOPB reliable?
The price and inventory of LMR12010YMKX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR12010YMKX/NOPB is usually 5 days.
3.What payment methods are accepted for LMR12010YMKX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR12010YMKX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR12010YMKX/NOPB?
LMR12010YMKX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR12010YMKX/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 LMR12010YMKX/NOPB?
For technical support, including LMR12010YMKX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR12010YMKX/NOPB requirements.
6.How does Aetrix verify that LMR12010YMKX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR12010YMKX/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 LMR12010YMKX/NOPB meets industry standards.
7.What is the process for return or replacement of LMR12010YMKX/NOPB?
All LMR12010YMKX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR12010YMKX/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 LMR12010YMKX/NOPB part is unused and in its original packaging.
Return procedure for LMR12010YMKX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMR12010YMKX/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…
