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Texas Instruments LMR10520XSDX/NOPB
- Part No.:
- LMR10520XSDX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LMR10520XSDX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,022
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Product details
Overview
LMR10520XSDX/NOPB from Texas Instruments is a 2-A synchronous step-down DC/DC converter optimized for portable and line-powered applications with 3-V to 5.5-V input and adjustable 0.6-V to 4.5-V output. It features current-mode control, 1600-kHz/3000-kHz switching frequency options, integrated MOSFETs, and enable/soft-start functionality in a thermally enhanced 6-pin LLP package.
For engineers reviewing the LMR10520XSDX/NOPB datasheet, LMR10520XSDX/NOPB pinout, LMR10520XSDX/NOPB application, or LMR10520XSDX/NOPB equivalent, this device serves as a compact, high-efficiency point-of-load regulator for FPGA core supplies, USB-powered peripherals, and industrial sensor nodes where board space and thermal performance are critical.
Technical Context
The LMR10520XSDX/NOPB implements fixed-frequency current-mode control with internal compensation, enabling stable regulation across wide load and input-voltage variations. Its integrated high- and low-side MOSFETs eliminate external power switches while supporting seamless transition between PWM and power-save modes.
It includes built-in soft-start (via external capacitor), power-good flag, and thermal shutdown protection. The device operates without external compensation components and supports output voltage adjustment via a resistor divider connected to the FB pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2 A continuous - sufficient for powering FPGA I/O banks or dual-core microcontrollers |
| Input Voltage Range | 3 V to 5.5 V - compatible with single-cell Li-ion, USB 5-V, or regulated 3.3-V/5-V rails |
| Output Voltage Range | 0.6 V to 4.5 V (adjustable) - supports core voltages down to 0.6 V for modern low-power SoCs |
| Switching Frequency | 1600 kHz / 3000 kHz - enables use of small 1-µH inductors and reduces solution footprint |
| Control Mode | Current-mode - provides fast transient response and inherent cycle-by-cycle current limiting |
| Package | 6-pin LLP (3 mm × 3 mm, 0.55-mm height) - thermally optimized for high-current density PCB layouts |
| Enable Function | Active-high EN pin - allows precise sequencing control in multi-rail systems |
Pinout & Package
LMR10520XSDX/NOPB uses a 6-pin Leadless Leadframe Package (LLP) with exposed thermal pad for efficient heat dissipation. Pin 1 is marked by a dot; the package is RoHS-compliant and moisture-sensitive level 2a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Connects to 3–5.5-V source; requires local 10-µF ceramic input capacitor |
| SW | Switch Node | Drives external inductor; connects to LX pin of integrated high-side MOSFET |
| GND | Power Ground | Common return path for input/output currents; tied to thermal pad |
| FB | Feedback Input | Senses output voltage via resistor divider; sets regulated VOUT = 0.6 V × (1 + R1/R2) |
| EN | Enable Control | High-logic enables regulation; pulled low disables converter and reduces IQ to 1 µA |
| PG | Power-Good Output | Open-drain signal asserts high when VOUT is within ±8% of target; requires pull-up resistor |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | Eliminates need for external power switches and reduces BOM count by ≥4 components |
| Thermally Enhanced LLP | 3 mm × 3 mm footprint with exposed pad achieves ≤45°C/W θJA in standard 2-layer layout |
| Internal Compensation | Removes requirement for external compensation network, simplifying design validation |
| Programmable Soft Start | External capacitor on SS pin controls ramp rate, preventing inrush current during startup |
| Power-Good Flag | Enables system-level sequencing and fault detection without external monitoring circuitry |
Applications
| Industrial Sensor Node | FPGA Core Supply |
|---|---|
Use Scenario: Compact battery- or USB-powered environmental sensor node with MCU, ADC, and wireless transceiver. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 1.2-V core supply to ARM Cortex-M4 MCU and 3.3-V I/O rail. Use Value: High efficiency (>92% at 1 A) extends battery life; small LLP package fits within 100-mm² PCB area constraint. |
Use Scenario: Low-profile embedded vision system using Xilinx Artix-7 FPGA requiring tightly regulated 1.0-V core voltage. IC Role / Device Role / Timing Role: Synchronous buck converter supplying FPGA core logic with <10-mV ripple and fast load-transient response. Use Value: Current-mode control ensures <5-µs recovery from 50% load step; PG signal validates rail stability before configuration. |
| USB-Powered Peripheral | Automotive Body Control Module |
Use Scenario: USB-C powered test adapter with isolated CAN interface and analog front-end. IC Role / Device Role / Timing Role: Regulates 5-V USB input to 3.3-V for microcontroller and 1.8-V for digital isolator. Use Value: Dual-output capability (with external divider) meets mixed-voltage requirements; EN pin enables USB suspend/resume control. |
Use Scenario: Non-safety-critical body control module in 12-V automotive system with local 5-V domain. IC Role / Device Role / Timing Role: Secondary regulator deriving 3.3-V supply from main 5-V rail for LIN transceivers and EEPROM. Use Value: Wide VIN tolerance (3–5.5 V) accommodates cold-crank dips; thermal shutdown prevents latch-up during overtemperature events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | 1-A output, 2.3–6-V input, 6-MHz VM control, smaller WCSP package | Limited to lower current loads; better suited for ultra-low-power wearables | Select when board space is more constrained than current demand and higher PSRR is required |
| TLV62084ARGTR | 2-A output, 2.7–5.5-V input, DCS-Control™, SON-8 package | Higher light-load efficiency via seamless PSM mode; no PG pin | Prefer for battery-backed systems needing >90% efficiency at 10-mA load and no sequencing feedback |
Compared with TPS62260DRVR and TLV62084ARGTR, the LMR10520XSDX/NOPB delivers higher output current in a thermally superior LLP package with integrated power-good signaling-making it optimal for industrial and USB-powered applications demanding robustness and system visibility.
Availability
LMR10520XSDX/NOPB is available at Aetrix Electronics and suitable for industrial sensor nodes, USB-powered peripherals, and FPGA core supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LMR10520XSDX/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 since 1980.
The LMR10520XSDX/NOPB belongs to TI's SIMPLE SWITCHER® family of integrated DC/DC converters, designed specifically for cost-sensitive, space-constrained applications requiring high reliability and minimal external components.
FAQ
What is the maximum recommended output current for LMR10520XSDX/NOPB?
The LMR10520XSDX/NOPB is rated for continuous 2-A output current under typical thermal conditions (2-layer PCB, 2 oz copper). Derating is required above 65°C ambient or with insufficient airflow; full 2-A operation is verified with the recommended 3-mm × 3-mm thermal pad layout per TI's datasheet Figure 7-2.
Does LMR10520XSDX/NOPB require an external compensation network?
No, the LMR10520XSDX/NOPB features internal compensation optimized for standard 1-µH inductors and 10-µF output capacitors. External compensation components are not supported or required-this simplifies layout and eliminates tuning effort during prototype validation.
Can LMR10520XSDX/NOPB operate from a 3.3-V input to generate 1.8-V output?
Yes, the LMR10520XSDX/NOPB supports 3.3-V input and regulates to 1.8-V output with >90% efficiency at 1-A load. The 0.6-V reference and current-mode architecture ensure stable operation across this input-output ratio, confirmed in TI's LMR10520 datasheet Section 7.3.
What is the function of the PG pin on LMR10520XSDX/NOPB?
The PG (Power Good) pin on LMR10520XSDX/NOPB is an open-drain output that asserts high when the regulated output voltage remains within ±8% of its target value. It requires an external pull-up resistor and is used for system sequencing, fault indication, or enabling downstream circuitry only after stable regulation is achieved.
Is LMR10520XSDX/NOPB pin-compatible with other devices in the LMR105xx family?
LMR10520XSDX/NOPB shares the same 6-pin LLP package and pinout with LMR10510 and LMR10515, but differs in current rating and internal current limit. While PCB layout is identical, substituting LMR10520XSDX/NOPB for lower-current variants requires verification of thermal margin and inductor saturation current.
LMR10520XSDX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 6-WDFN Exposed Pad
- 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:
- 2A
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (3x3)
LMR10520XSDX/NOPB FAQ
1.How can I place an order for LMR10520XSDX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR10520XSDX/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 LMR10520XSDX/NOPB reliable?
The price and inventory of LMR10520XSDX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR10520XSDX/NOPB is usually 5 days.
3.What payment methods are accepted for LMR10520XSDX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR10520XSDX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR10520XSDX/NOPB?
LMR10520XSDX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR10520XSDX/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 LMR10520XSDX/NOPB?
For technical support, including LMR10520XSDX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR10520XSDX/NOPB requirements.
6.How does Aetrix verify that LMR10520XSDX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR10520XSDX/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 LMR10520XSDX/NOPB meets industry standards.
7.What is the process for return or replacement of LMR10520XSDX/NOPB?
All LMR10520XSDX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR10520XSDX/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 LMR10520XSDX/NOPB part is unused and in its original packaging.
Return procedure for LMR10520XSDX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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