My Inquiry
My Account
Texas Instruments LMR10510XMFE/NOPB
- Part No.:
- LMR10510XMFE/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMR10510XMFE/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,520
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMR10510XMFE/NOPB from Texas Instruments is a monolithic 1.6-MHz, 1-A synchronous step-down DC/DC regulator in a 5-pin SOT-23 package, delivering 0.6 V to 4.5 V output from 3 V–5.5 V input with internal PMOS switch (130 mΩ), current-mode PWM control, and thermal shutdown-used in space-constrained point-of-load conversions for industrial and portable instrumentation.
For engineers reviewing the LMR10510XMFE/NOPB datasheet, LMR10510XMFE/NOPB pinout, LMR10510XMFE/NOPB application, or LMR10510XMFE/NOPB equivalent, key selection criteria include verified 1.6-MHz switching frequency, confirmed 30 nA shutdown IQ, validated 0.600 V feedback reference voltage, and documented SOT-23 (2.92 × 2.84 × 1 mm) mechanical compatibility with PCB layout constraints.
Technical Context
The LMR10510XMFE/NOPB implements constant-frequency current-mode PWM control with internal compensation, enabling stable regulation without external loop components. Its 130-mΩ internal PMOS switch supports 1-A continuous output with pulse-by-pulse current limiting and on-times as low as 30 ns across the full 3–5.5 V input range.
Functional architecture includes integrated soft-start (600 µs ramp), undervoltage lockout (2.73 V rising threshold, 430 mV hysteresis), output overvoltage protection (15% above 0.6 V reference), and thermal shutdown at 165°C with 15°C hysteresis-ensuring robust operation in battery-powered and distributed power systems.
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 rails without pre-regulation. |
| Output Voltage Range | 0.6 V to 4.5 V - set via external resistor divider; 0.600 V ±12 mV feedback reference enables precise low-voltage core supply generation. |
| Switching Frequency | 1.6 MHz - enables use of compact 1–2.2 µH inductors and 22 µF ceramic capacitors, minimizing solution footprint. |
| Output Current | 1 A continuous - delivered by integrated 130-mΩ PMOS switch; peak current limit 1.75 A typical ensures safe transient handling. |
| Shutdown Quiescent Current | 30 nA - ultra-low standby draw extends battery life in always-on sensor nodes and handheld instruments. |
| Feedback Voltage | 0.600 V - fixed internal reference; sets output using R1/R2 divider; line regulation ≤0.02%/V maintains accuracy across input variation. |
| Junction Temperature Range | −40°C to +125°C - qualified for industrial embedded applications with no derating up to 125°C ambient. |
Pinout & Package
LMR10510XMFE/NOPB uses the 5-pin SOT-23 (DBV) package (2.92 mm × 2.84 mm × 1.0 mm), optimized for high-density layouts and thermal performance (θJA = 118°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to inductor and catch diode; carries high di/dt switching current; requires tight layout and ground plane coupling. |
| 2 GND | Signal and power ground | Primary return path for feedback network and internal circuitry; bottom resistor of FB divider must be placed adjacent to this pin. |
| 3 FB | Feedback input | Senses output voltage via external resistor divider; bias current ≤100 nA minimizes divider error and power loss. |
| 4 EN | Enable control | Logic-high active; threshold 1.8 V; floating prohibited; max voltage VIN + 0.3 V prevents latch-up or damage. |
| 5 VIN | Input supply | Power input for both control circuitry and internal PMOS switch; requires local 22 µF ceramic decoupling close to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated | Eliminates need for external compensation network-reduces BOM count and design iteration time for 1-A buck applications. |
| Internal soft-start | 600 µs controlled VOUT ramp prevents inrush current and stabilizes downstream LDOs or microcontroller power sequencing. |
| Current-mode PWM | Provides inherent cycle-by-cycle current limiting and fast transient response (<10 µs) to load steps without external sensing. |
| Thermal shutdown | Activates at 165°C junction temperature with 15°C hysteresis-protects against sustained overload or poor heatsinking in sealed enclosures. |
| Low EMI operation | Fixed 1.6-MHz frequency avoids AM/FM radio bands; clean switch-node waveform reduces filtering requirements in noise-sensitive analog sections. |
Applications
| Industrial Power Meters | Portable Hand-Held Instruments |
|---|---|
Use Scenario: Regulating 3.3 V from 5-V battery or USB input for metrology ADCs, real-time clocks, and isolated communication interfaces in Class 0.2 energy meters. IC Role / Device Role / Timing Role: Primary point-of-load regulator supplying precision analog front-end and microcontroller core voltage. Use Value: 30 nA shutdown IQ preserves battery runtime during sleep cycles; 0.600 V reference enables accurate 1.2-V or 1.8-V rail generation for low-power MCU cores. | Use Scenario: Powering FPGA I/O banks and ARM Cortex-M4 subsystems in handheld test equipment with dual 3.7-V Li-ion cells. IC Role / Device Role / Timing Role: Compact, high-efficiency buck converter replacing discrete switcher solutions in <100 mm² PCB area budgets. Use Value: 1.6-MHz operation allows 1.5-µH inductor and 22-µF X7R ceramic capacitor-reducing solution size by >40% vs. 500-kHz alternatives. |
| Point-of-Load Conversion | Battery-Powered Equipment |
Use Scenario: Generating 1.8 V for digital logic from a 3.3-V system rail in programmable logic controllers with dense I/O modules. IC Role / Device Role / Timing Role: Local DC/DC regulator delivering regulated voltage directly at load pins to minimize IR drop and noise coupling. Use Value: Internal 130-mΩ PMOS switch achieves ≥90% efficiency at 1-A load-reducing thermal load and eliminating need for heatsinking. | Use Scenario: Supplying 2.5 V to wireless transceivers (BLE/Zigbee) and sensors in asset-tracking tags operating on coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-IQ step-down regulator enabling multi-year battery life in intermittent transmit/receive duty cycles. Use Value: 30 nA shutdown current ensures <1 µA system standby-critical for extending shelf life and operational longevity in remote deployments. |
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 | 3-MHz switching frequency; 2-A output; WSON-11 package; higher quiescent current (17 µA in shutdown) | Better suited for higher-current, faster-transient applications where board area permits larger package | Select when >1-A load or faster dynamic response is required; verify PCB footprint and thermal management for WSON-11 |
| LMR10515XMF/NOPB | Same SOT-23-5 package; 3-MHz variant; identical pinout but different internal oscillator; 150-mΩ RDS(ON) in WSON variant only | Direct replacement for designs requiring higher switching frequency to shrink passive components further | Use for 3-MHz operation while retaining same layout; confirm feedback divider recalibration if VFB tolerance differs |
Compared with LMR10510XMFE/NOPB, TPS62130ARGTR offers higher output current and frequency but requires PCB redesign and consumes more power in shutdown; LMR10515XMF/NOPB provides identical form factor and pin compatibility with upgraded frequency-making it the preferred upgrade path for footprint-constrained 3-MHz designs.
Availability
LMR10510XMFE/NOPB is available at Aetrix Electronics and suitable for industrial power meters, portable hand-held instruments, point-of-load conversions, battery-powered equipment, and space-constrained applications requiring stable component supply and long-term production continuity.
Supply support for LMR10510XMFE/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 designing analog ICs, embedded processors, and power management solutions for industrial, automotive, and consumer markets.
The LMR10510XMFE/NOPB belongs to TI's high-frequency, monolithic buck regulator product line-engineered specifically for compact, efficient point-of-load conversion in battery-powered and space-limited industrial systems.
FAQ
What is the switching frequency of the LMR10510XMFE/NOPB?
The LMR10510XMFE/NOPB operates at a fixed 1.6-MHz switching frequency. This value is factory-set and not adjustable. It enables small external components-such as 1.5–2.2 µH inductors and 22 µF ceramic capacitors-while maintaining high efficiency (up to 93%) and fast transient response. The 1.6-MHz option is designated by the "X" suffix in the part number, distinguishing it from the 3-MHz "Y" variant.
Does the LMR10510XMFE/NOPB require external compensation components?
No, the LMR10510XMFE/NOPB is internally compensated. Its control loop is fully optimized for stability with standard external components (inductor, input/output capacitors, feedback resistors). This eliminates the need for external compensation networks like type-II or type-III compensators-reducing BOM count, PCB area, and design validation effort for 1-A buck applications.
What is the maximum output current capability of the LMR10510XMFE/NOPB?
The LMR10510XMFE/NOPB delivers up to 1 A of continuous output current. This is enabled by its integrated 130-mΩ PMOS power switch in the SOT-23 package. The device includes cycle-by-cycle current limiting with a typical threshold of 1.75 A, and thermal shutdown at 165°C to protect against sustained overload. Performance is specified across −40°C to +125°C junction temperature.
How does the enable (EN) pin function on the LMR10510XMFE/NOPB?
The EN pin on the LMR10510XMFE/NOPB is a logic-high active enable input with a 1.8-V threshold. When pulled above 1.8 V (and within VIN + 0.3 V), the device starts switching; below 0.4 V, it enters ultra-low-IQ shutdown (30 nA typical). The pin must never float-TI recommends tying it to VIN through a pull-up resistor or controlling it directly with a GPIO. Exceeding voltage limits risks latch-up or permanent damage.
What package type is used for the LMR10510XMFE/NOPB?
The LMR10510XMFE/NOPB uses the 5-pin SOT-23 (DBV) package, measuring 2.92 mm × 2.84 mm × 1.0 mm. This compact, surface-mount outline supports high-density PCB layouts and provides θJA = 118°C/W in standard JEDEC 2-layer board conditions. It is distinct from the 6-pin WSON variant (NGG) used in other LMR10510 family members.
LMR10510XMFE/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:
- 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMR10510XMFE/NOPB FAQ
1.How can I place an order for LMR10510XMFE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR10510XMFE/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 LMR10510XMFE/NOPB reliable?
The price and inventory of LMR10510XMFE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR10510XMFE/NOPB is usually 5 days.
3.What payment methods are accepted for LMR10510XMFE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR10510XMFE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR10510XMFE/NOPB?
LMR10510XMFE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR10510XMFE/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 LMR10510XMFE/NOPB?
For technical support, including LMR10510XMFE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR10510XMFE/NOPB requirements.
6.How does Aetrix verify that LMR10510XMFE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR10510XMFE/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 LMR10510XMFE/NOPB meets industry standards.
7.What is the process for return or replacement of LMR10510XMFE/NOPB?
All LMR10510XMFE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR10510XMFE/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 LMR10510XMFE/NOPB part is unused and in its original packaging.
Return procedure for LMR10510XMFE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMR10510XMFE/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…
