My Inquiry
My Account
Texas Instruments LMR10510YMFE/NOPB
- Part No.:
- LMR10510YMFE/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMR10510YMFE/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:748
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMR10510YMFE/NOPB from Texas Instruments is a monolithic 3-MHz PWM step-down DC/DC regulator in WSON-6 package, delivering up to 1 A output current with 0.6 V feedback reference and internal PMOS switch (150 mΩ typical). It operates from 3 V to 5.5 V input and supports adjustable output voltages down to 0.6 V, targeting space-constrained point-of-load conversion in portable instrumentation and industrial distributed power systems.
For engineers reviewing the LMR10510YMFE/NOPB datasheet, LMR10510YMFE/NOPB pinout, LMR10510YMFE/NOPB application, or LMR10510YMFE/NOPB equivalent, key selection criteria include its 3-MHz switching frequency enabling ultra-compact passive sizing, 30 nA shutdown IQ for battery longevity, internal compensation reducing external component count, and thermal shutdown + overvoltage protection for robust operation in embedded power rails.
Technical Context
The LMR10510YMFE/NOPB implements current-mode PWM control with an internally compensated error amplifier and fixed 3-MHz oscillator, supporting duty cycles from 7% to 90%. Its architecture integrates a 150-mΩ PMOS high-side switch, soft-start ramp (600 µs), and cycle-by-cycle current limiting (1.75 A typical) to ensure stable regulation under fast load transients.
It features dual input pins-VINA (control logic supply) and VIND (power input)-requiring local connection on PCB, plus dedicated FB pin referenced to 0.600 V ±12 mV, EN with 0.4 V shutdown threshold and 1.8 V enable threshold, and SW node rated for −0.5 V to 7 V with 30 ns minimum on-time capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 5.5 V - supports direct regulation from standard 3.3-V and 5-V system rails without pre-regulation. |
| Output Current | Up to 1 A - sufficient for powering microcontrollers, sensors, and interface ICs in compact designs. |
| Switching Frequency | 3 MHz (LMR10510Y variant) - enables use of sub-1-µH inductors and 22-µF ceramic capacitors, minimizing solution footprint. |
| Feedback Reference | 0.600 V ±12 mV - sets precise output voltage via external resistor divider; enables 0.6 V minimum output. |
| Shutdown Quiescent Current | 30 nA typical - extends battery life in always-on or low-duty-cycle portable equipment. |
| Internal Switch RDS(ON) | 150 mΩ (WSON package) - reduces conduction loss at 1-A load, improving efficiency in mid-load range. |
| Thermal Shutdown Threshold | 165°C - protects against sustained overload or poor PCB thermal design without requiring external sensing. |
Pinout & Package
LMR10510YMFE/NOPB uses the NGG (WSON-6) package: 3.00 mm × 3.00 mm × 0.8 mm body with exposed die attach pad (DAP) for thermal enhancement. DAP must be connected to system ground for optimal thermal performance but is not a primary signal ground path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback input | Connects to bottom resistor of external voltage divider; regulates output by comparing to 0.6-V internal reference. |
| GND | Signal and power ground | Reference for FB, EN, and internal circuitry; place bottom feedback resistor adjacent to minimize noise coupling. |
| SW | Switch node | Drives external inductor and catch diode; swings between ~VIN and −0.3 V during operation; requires low-inductance layout. |
| VIND | Power input supply | Primary power source for internal PMOS switch; connect directly to input capacitor with short, wide trace. |
| VINA | Control circuitry supply | Supplies bias for internal logic and error amplifier; must be tied to VIND on PCB-no separate filtering required. |
| EN | Enable control input | Logic-high (>1.8 V) enables regulation; <0.4 V disables with 30-nA IQ; must not float or exceed VINA + 0.3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated control loop | Eliminates need for external compensation network-reduces BOM count and layout sensitivity in space-constrained designs. |
| 3-MHz fixed-frequency PWM | Enables use of 0.47–1.0 µH inductors and 22 µF X7R/X5R MLCCs, achieving <25 mm² total solution area including passives. |
| Internal soft-start (600 µs) | Controls output ramp rate to limit inrush current into downstream capacitance, preventing input rail droop or reset glitches. |
| Output overvoltage protection | Disables switch when FB exceeds 15% above 0.6 V (i.e., >0.69 V), protecting downstream 1.8-V/3.3-V logic from fault-induced damage. |
| Pulse-by-pulse current limit | Clamps peak switch current at 1.75 A typical, allowing safe operation into short-circuit or heavy transient loads without latch-off. |
Applications
| Portable Hand-Held Instruments | Industrial Power Meters |
|---|---|
Use Scenario: Battery-powered multimeters and handheld oscilloscopes requiring clean, low-noise 3.3-V or 1.8-V rails from single-cell Li-ion or dual-cell alkaline inputs. IC Role / Device Role / Timing Role: Primary step-down regulator converting 3.3-V/5-V battery-derived input to stable microcontroller core and ADC reference voltage. Use Value: 30 nA shutdown IQ preserves battery charge during standby; 3-MHz operation minimizes EMI and allows small-shielded inductors. |
Use Scenario: DIN-rail mounted electricity meters needing isolated, reliable 3.3-V supply for metrology SoCs and communication modules in harsh industrial environments. IC Role / Device Role / Timing Role: Local point-of-load converter deriving regulated rail from unregulated 5-V auxiliary supply generated by onboard flyback transformer. Use Value: Thermal shutdown (165°C) and UVLO hysteresis (430 mV) ensure continuous operation across ambient temperatures from −40°C to +85°C. |
| Space-Constrained IoT Sensors | Distributed Point-of-Load Conversion |
Use Scenario: Wireless sensor nodes with tight PCB real estate (<100 mm²), powered by coin cells or energy harvesters, requiring efficient 1.8-V supply for BLE SoC and analog front-end. IC Role / Device Role / Timing Role: High-efficiency buck regulator operating in discontinuous conduction mode at light loads, maintaining >85% efficiency down to 10 mA. Use Value: Internal compensation and minimal external parts (only 2 resistors, 1 inductor, 2 capacitors) reduce bill-of-materials and assembly cost. |
Use Scenario: Industrial PLC backplanes distributing 5-V bus to multiple I/O modules, each requiring localized 3.3-V or 2.5-V rails with independent enable control. IC Role / Device Role / Timing Role: Standalone DC/DC module per slot, enabled/disabled via FPGA-controlled EN signal for dynamic power gating. Use Value: Independent VINA/VIND pins simplify sequencing; 3-MHz frequency avoids interference with CAN or RS-485 communication bands. |
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 | 2.5-MHz fixed frequency, 3-V to 17-V input, 1.2-A output, 125-mΩ switch, integrated synchronous rectifier. | Broadens input range for 12-V industrial rails; synchronous topology improves light-load efficiency but increases complexity. | Choose TPS62130ARGTR when input exceeds 5.5 V or synchronous rectification is required for >90% efficiency at 10–100 mA loads. |
| LMR10510XMF/NOPB | 1.6-MHz switching frequency, identical pinout and package, same 0.6-V reference and 1-A rating, 130-mΩ SOT-23 variant. | Larger thermal resistance (θJA = 118°C/W vs. 80°C/W) limits continuous 1-A operation in still-air environments. | Choose LMR10510XMF/NOPB only if board layout constraints favor SOT-23 or lower-frequency operation is preferred for EMI filtering simplicity. |
Compared with LMR10510YMFE/NOPB, the TPS62130ARGTR offers wider VIN and higher current but requires careful attention to synchronous gate drive timing, while the LMR10510XMF/NOPB trades frequency and thermal performance for legacy package compatibility-neither is pin-compatible nor drop-in, and both demand revalidation of loop stability and thermal margins.
Availability
LMR10510YMFE/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial power meters, and space-constrained IoT sensors requiring stable component supply with full lifecycle support.
Supply support for LMR10510YMFE/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 and embedded processing technologies, with leadership in power management ICs for industrial, automotive, and consumer applications.
The LMR10510YMFE/NOPB belongs to TI's LMR series of high-frequency monolithic buck regulators, designed specifically for ultra-compact, high-efficiency point-of-load conversion where minimal external components and fast transient response are critical.
FAQ
What is the switching frequency of the LMR10510YMFE/NOPB?
The LMR10510YMFE/NOPB operates at a fixed 3-MHz switching frequency, as designated by the "Y" suffix in its part number. This high frequency enables the use of very small inductors (e.g., 0.47 µH) and ceramic output capacitors (e.g., 22 µF X7R), significantly reducing total solution size compared to lower-frequency alternatives. The frequency is factory-trimmed and does not require external programming.
Does the LMR10510YMFE/NOPB require external compensation components?
No, the LMR10510YMFE/NOPB features an internally compensated control loop, eliminating the need for external compensation networks such as RC or capacitor-divider circuits. This simplifies design, reduces component count, and improves immunity to layout parasitics-making it ideal for compact, high-density PCBs where routing space is limited.
How is the output voltage set on the LMR10510YMFE/NOPB?
The output voltage of the LMR10510YMFE/NOPB is set using a two-resistor feedback divider connected between VOUT, FB, and GND. With a precise 0.600-V internal reference, the formula is VOUT = 0.6 × (1 + R1/R2). A common choice is R2 = 10 kΩ and R1 calculated accordingly-for example, 10 kΩ yields 1.2 V output. The FB pin draws only 0.1–100 nA, minimizing divider current loss.
What is the purpose of the separate VINA and VIND pins on the LMR10510YMFE/NOPB?
The LMR10510YMFE/NOPB separates control logic supply (VINA) from power switch supply (VIND) to improve noise immunity and enable flexible input sequencing. VINA powers the internal error amplifier and logic, while VIND supplies the PMOS switch. They must be tied together on the PCB but allow independent decoupling-VINA can use a smaller capacitor for cleaner bias, while VIND requires low-ESL bulk capacitance near the SW node.
Can the LMR10510YMFE/NOPB operate with input voltage below 3 V?
No-the LMR10510YMFE/NOPB has a recommended operating input range of 3 V to 5.5 V, with undervoltage lockout (UVLO) activating below 2.73 V (typical) and releasing only above 2.3 V due to 430-mV hysteresis. Operation below 3 V is outside specification and may result in unstable regulation, reduced current capability, or failure to start; for sub-3-V applications, consider TI's TPS61099 or similar boost/buck-boost solutions.
LMR10510YMFE/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-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 4.5V
- 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-23-5
LMR10510YMFE/NOPB FAQ
1.How can I place an order for LMR10510YMFE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR10510YMFE/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 LMR10510YMFE/NOPB reliable?
The price and inventory of LMR10510YMFE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR10510YMFE/NOPB is usually 5 days.
3.What payment methods are accepted for LMR10510YMFE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR10510YMFE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR10510YMFE/NOPB?
LMR10510YMFE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR10510YMFE/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 LMR10510YMFE/NOPB?
For technical support, including LMR10510YMFE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR10510YMFE/NOPB requirements.
6.How does Aetrix verify that LMR10510YMFE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR10510YMFE/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 LMR10510YMFE/NOPB meets industry standards.
7.What is the process for return or replacement of LMR10510YMFE/NOPB?
All LMR10510YMFE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR10510YMFE/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 LMR10510YMFE/NOPB part is unused and in its original packaging.
Return procedure for LMR10510YMFE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMR10510YMFE/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…
