My Inquiry
My Account
Texas Instruments LMR12010YMKE/NOPB
- Part No.:
- LMR12010YMKE/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMR12010YMKE/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:144
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMR12010YMKE/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, featuring 3 MHz fixed switching frequency, 0.8 V feedback reference voltage, and internal current-mode PWM control for high-efficiency point-of-load conversion in space-constrained industrial and portable systems.
For engineers reviewing the LMR12010YMKE/NOPB datasheet, LMR12010YMKE/NOPB pinout, LMR12010YMKE/NOPB application, or LMR12010YMKE/NOPB equivalent, key selection considerations include its 3 MHz operation enabling ultra-small external magnetics, 30 nA shutdown current for battery longevity, internal compensation reducing BOM count, and thermal shutdown with 165°C trip point for robust system-level reliability.
Technical Context
The LMR12010YMKE/NOPB implements constant-frequency current-mode PWM control with an internal 300 mΩ NMOS power switch and integrated error amplifier. Its 3 MHz oscillator enables sub-100 ns minimum on-time (13 ns typical), supporting stable regulation down to 0.8 V output across the full 3–20 V input range.
It uses bootstrap gate drive (BOOST–SW ≥ 2.5 V) for high-side NMOS switching, includes cycle-by-cycle current limiting at 1.7 A (typ), and features output overvoltage protection triggered at FB = 1.1×VREF (0.88 V). Undervoltage lockout activates at VIN < 2.3 V (falling) with 440 mV hysteresis.
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 | 1 A continuous - delivers full rated load with internal 300 mΩ NMOS switch and thermal shutdown at 165°C |
| Switching Frequency | 3 MHz - enables use of ≤2.2 µH inductors and low-ESR ceramic capacitors for minimal PCB footprint |
| Feedback Reference | 0.800 V ±1.6% - sets output via external resistor divider; line regulation <0.01%/V ensures stability across input range |
| Shutdown IQ | 30 nA typical - extends battery life in always-on or sleep-mode applications |
| Current Limit | 1.7 A typical - provides pulse-by-pulse protection against short-circuit or overload without external sensing |
| Thermal Shutdown | 165°C trip, ~150°C recovery - prevents permanent damage during sustained overload or poor heatsinking |
Pinout & Package
LMR12010YMKE/NOPB is housed in a 6-pin SOT-23-THIN package (2.90 mm × 1.60 mm × 1.00 mm), optimized for high-density layouts and thermal performance on 2- or 4-layer PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BOOST | Bootstrap supply node | Drives NMOS gate; requires 0.1 µF ceramic capacitor to SW; must maintain 2.5–5.5 V above SW for full current capability |
| 2 - GND | Signal and power ground | Reference for FB divider and internal circuits; bottom resistor of feedback network must connect here for accurate regulation |
| 3 - FB | Feedback input | Senses output via resistor divider; 10–250 nA bias current allows high-impedance dividers without loading error |
| 4 - EN | Enable control | Logic-high (>1.8 V) enables operation; logic-low (<0.4 V) disables with 30 nA quiescent current; must not float or exceed VIN + 0.3 V |
| 5 - VIN | Main input supply | Accepts 3–20 V; requires local 10 µF ceramic bypass capacitor near pin to suppress switching transients |
| 6 - SW | Power switch node | Connects to inductor, catch diode, and BOOST capacitor; swings between VIN and −0.3 V (diode forward drop) |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated | Eliminates need for external compensation network - reduces design time and component count while maintaining stability across 0.8–17 V output range |
| Internal soft-start | Ramps reference from 0 V to 0.8 V in ~200 µs - controls inrush current and minimizes output overshoot during startup |
| Output overvoltage protection | Shuts off NMOS when FB exceeds 0.88 V - prevents damage to downstream loads during feedback divider failure or transient events |
| Ultra-low shutdown IQ | 30 nA typical - enables multi-year battery operation in IoT sensors and metering devices with periodic wake-up cycles |
| Thermal shutdown with hysteresis | 165°C trip / ~150°C recovery - protects silicon integrity during sustained overload while avoiding thermal cycling instability |
Applications
| Industrial Power Meters | Portable Hand-Held Instruments |
|---|---|
Use Scenario: High-accuracy energy measurement in DIN-rail or panel-mounted meters requiring isolated 3.3 V or 5 V rails from 12–24 V DC inputs. IC Role / Device Role / Timing Role: Primary step-down regulator delivering clean, regulated 3.3 V to metrology ADCs, microcontrollers, and RF modules. Use Value: 3 MHz switching minimizes EMI near sensitive analog front-ends; 1 A output supports simultaneous MCU + wireless + sensor operation without external boost stages. | Use Scenario: Battery-powered multimeters, thermal imagers, and field calibration tools operating from single-cell Li-ion (3.0–4.2 V) or dual-cell alkaline (2.0–3.2 V). IC Role / Device Role / Timing Role: Main DC/DC converter generating stable 3.3 V for display, touch controller, and precision analog circuitry. Use Value: 30 nA shutdown current extends shelf life and runtime; thin SOT-23-THIN package fits within tight mechanical envelopes under LCD assemblies. |
| Space-Constrained Point-of-Load | Industrial Distributed Power |
Use Scenario: FPGA I/O bank or ASIC core rail in compact PLC I/O modules where board area is limited to <100 mm² per rail. IC Role / Device Role / Timing Role: Local buck regulator converting 5 V or 12 V backplane voltage to 1.2 V or 1.8 V for digital logic domains. Use Value: 3 MHz operation allows 1.0 µH inductors and 10 µF ceramic caps - total solution size <25 mm² including passives. | Use Scenario: Remote sensor nodes in factory automation networks powered by 24 V industrial bus, requiring multiple isolated or non-isolated auxiliary rails. IC Role / Device Role / Timing Role: Secondary regulator deriving 5 V or 3.3 V for communication interfaces (RS-485, CAN transceivers) and microcontroller peripherals. Use Value: Wide 3–20 V input range accommodates bus voltage sag and ripple; thermal shutdown ensures safe operation in unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR12006YMKE/NOPB | Same SOT-23-THIN package, 600 mA output, 3 MHz switching, identical pinout and control architecture | Lower current rating limits use to sub-600 mA loads; suitable for lower-power MCU-only designs | Select when full 1 A capability is unnecessary - reduces cost and thermal margin requirements |
| TPS62130ARGTR | 3 MHz, 3 A output, 2.7–6 V input, 3 mm × 3 mm WSON-16 package, requires external compensation | Higher current and lower input range; larger footprint but better thermal performance at >1 A | Choose for higher-output-current applications where PCB area permits larger package and additional external components |
Compared with LMR12010YMKE/NOPB, LMR12006YMKE/NOPB offers identical form factor and frequency but reduced current capacity, while TPS62130ARGTR trades pin compatibility for higher output current and wider thermal headroom - making the LMR12010YMKE/NOPB optimal for 1 A, space-limited, wide-input industrial point-of-load designs.
Availability
LMR12010YMKE/NOPB is available at Aetrix Electronics and suitable for industrial distributed power, portable instrumentation, and space-constrained point-of-load applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LMR12010YMKE/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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMR12010YMKE/NOPB belongs to TI's high-frequency monolithic buck regulator product line, engineered specifically for compact, efficient DC/DC conversion in battery-powered and space-constrained industrial equipment.
FAQ
What is the maximum output voltage supported by the LMR12010YMKE/NOPB?
The LMR12010YMKE/NOPB supports an output voltage range of 0.8 V to 17 V, set externally via a resistor divider connected to the FB pin. The 0.8 V internal reference allows precise scaling; for example, a 1.2 V output requires R1/R2 = 0.5, and 5 V requires R1/R2 = 5.25. Output accuracy is maintained across temperature and line variations due to tight 0.784–0.816 V reference tolerance and <0.01%/V line regulation.
Does the LMR12010YMKE/NOPB require an external bootstrap capacitor?
Yes, the LMR12010YMKE/NOPB requires a 0.1 µF ceramic capacitor between BOOST and SW pins to sustain gate drive for the internal NMOS switch. This capacitor is charged during SW low-time via D2 (external diode) from either VIN or VOUT. Proper sizing and placement - directly across BOOST/SW with minimal trace length - are critical to maintain BOOST–SW ≥ 2.5 V under full load, ensuring reliable 1 A operation.
Can the LMR12010YMKE/NOPB operate with a 2.5 V input supply?
No, the LMR12010YMKE/NOPB cannot operate with a 2.5 V input. Its undervoltage lockout (UVLO) rising threshold is 2.74 V (typical), and operation is only guaranteed above 3 V per recommended operating ratings. At 2.5 V, the device remains in shutdown with no switching activity; attempting to force operation risks unstable regulation or failure to start.
How does the LMR12010YMKE/NOPB handle thermal overload conditions?
The LMR12010YMKE/NOPB incorporates thermal shutdown that disables the internal NMOS switch when junction temperature exceeds 165°C. Switching resumes only after die temperature falls to approximately 150°C, providing hysteresis to prevent oscillation. This protection operates independently of current limit and is effective even under high ambient temperatures or inadequate PCB copper area - ensuring long-term reliability in sealed industrial enclosures.
Is the LMR12010YMKE/NOPB pin-compatible with other members of the LMR120xx family?
Yes, the LMR12010YMKE/NOPB shares identical 6-pin SOT-23-THIN pinout and function mapping with LMR12006YMKE/NOPB and LMR12010XMKE/NOPB. All variants use the same BOOST/GND/FB/EN/VIN/SW arrangement and compatible control logic. However, switching frequency differs (3 MHz vs. 1.6 MHz) and current rating varies (1 A vs. 600 mA), so electrical validation is required when substituting across variants.
LMR12010YMKE/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
LMR12010YMKE/NOPB FAQ
1.How can I place an order for LMR12010YMKE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR12010YMKE/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 LMR12010YMKE/NOPB reliable?
The price and inventory of LMR12010YMKE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR12010YMKE/NOPB is usually 5 days.
3.What payment methods are accepted for LMR12010YMKE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR12010YMKE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR12010YMKE/NOPB?
LMR12010YMKE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR12010YMKE/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 LMR12010YMKE/NOPB?
For technical support, including LMR12010YMKE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR12010YMKE/NOPB requirements.
6.How does Aetrix verify that LMR12010YMKE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR12010YMKE/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 LMR12010YMKE/NOPB meets industry standards.
7.What is the process for return or replacement of LMR12010YMKE/NOPB?
All LMR12010YMKE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR12010YMKE/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 LMR12010YMKE/NOPB part is unused and in its original packaging.
Return procedure for LMR12010YMKE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMR12010YMKE/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…
