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Texas Instruments LMR10530XSD/NOPB
- Part No.:
- LMR10530XSD/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LMR10530XSD/NOPB.pdf
- Description:
- IC REG BUCK ADJ 3A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:7,415
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Product details
Overview
LMR10530XSD/NOPB from Texas Instruments is a monolithic 1.5-MHz, 3-A synchronous step-down DC/DC regulator in a 10-pin WSON (3 mm × 3 mm) package. It operates from 3 V to 5.5 V input, delivers 0.6 V to 4.5 V output, features 56-mΩ internal PMOS switch, peak current-mode control, and 300 nA shutdown quiescent current. It targets point-of-load conversion in space-constrained industrial and embedded systems.
For engineers reviewing the LMR10530XSD/NOPB datasheet, LMR10530XSD/NOPB pinout, LMR10530XSD/NOPB application, or LMR10530XSD/NOPB equivalent, key selection criteria include verified 1.5-MHz fixed switching frequency, confirmed 3-A continuous output capability, validated WSON-10 thermal performance (θJA = 53°C/W), and documented frequency foldback behavior under low-VFB conditions.
Technical Context
The LMR10530XSD/NOPB implements peak current-mode PWM control with internal compensation and a fixed 1.5-MHz oscillator. Its 56-mΩ PMOS switch enables high power density, while cycle-by-cycle current limiting (4.4 A typical) and thermal shutdown (165°C trip) provide robust protection.
It integrates undervoltage lockout (2.7 V rising threshold, 350 mV hysteresis), internal soft-start (600 µs ramp), and output overvoltage protection (0.69 V FB threshold). Frequency foldback reduces switching frequency to 400 kHz during startup or overload to limit dissipation.
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 - programmable via external resistor divider; 0.6 V reference enables core voltage scaling for modern processors. |
| Switching Frequency | 1.5 MHz (fixed) - enables use of sub-1-µH inductors and compact ceramic capacitors, minimizing PCB footprint. |
| Continuous Output Current | 3 A - sustained delivery without derating at TA ≤ 85°C on standard 4-layer JEDEC board. |
| Feedback Reference Voltage | 0.600 V ± 2% - tight tolerance ensures accurate output regulation across temperature and load. |
| Shutdown Quiescent Current | 300 nA typical - preserves battery life in always-on or low-power standby modes. |
| Internal Switch RDS(ON) | 56 mΩ - low conduction loss improves efficiency, especially at high load currents. |
| Thermal Shutdown Threshold | 165°C junction - protects against sustained overload or poor heatsinking; 15°C hysteresis prevents chatter. |
Pinout & Package
LMR10530XSD/NOPB uses a thermally enhanced 10-pin WSON package (3.00 mm × 3.00 mm × 0.8 mm) with exposed die attach pad (DAP) for low thermal impedance. The DAP must be soldered to system ground for optimal thermal performance but is not a primary current-carrying GND path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VINC) | Internal bias supply | Provides regulated voltage for control circuitry; requires local 0.1-µF bypass to SGND. |
| 2 (EN) | Enable input | Logic-high (>1.8 V) enables operation; logic-low (<0.4 V) enters ultra-low-IQ shutdown. |
| 3 (SGND) | Analog ground reference | Return for feedback network; place lower feedback resistor adjacent to minimize noise coupling. |
| 4 (NC) | No-connect | Internally unused; must be connected to PGND for mechanical stability and EMI control. |
| 5 (FB) | Feedback input | Senses output voltage via resistor divider; 0.1–100 nA input bias enables high-impedance dividers. |
| 6 (PGND) | Power ground return | Low-impedance return path for switch current; separate from SGND to avoid noise injection into control loop. |
| 7,8 (SW) | Switch node | Connects to inductor and catch diode; handles high dI/dt; requires short, wide copper pour for EMI reduction. |
| 9,10 (VIND) | Main input supply | High-current VIN connection; requires local bulk + ceramic capacitor pair near pins for transient suppression. |
| DAP | Die attach pad | Thermal interface only; must be soldered to solid GND plane for θJA = 53°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated peak current-mode control | Eliminates need for external compensation components; provides stable regulation across 0.6–4.5 V output range without tuning. |
| Frequency foldback (to 400 kHz) | Reduces switch stress and power dissipation during startup, overload, or short-circuit by dynamically lowering fSW. |
| Internal soft-start (600 µs) | Controls output voltage ramp rate to limit inrush current and prevent overshoot during EN assertion. |
| Output overvoltage protection (0.69 V FB threshold) | Disables switch if FB exceeds 15% above reference, preventing damage to downstream 1.8-V or 3.3-V loads. |
| Cycle-by-cycle current limit (4.4 A typical) | Prevents switch failure under transient overloads by terminating each switching cycle when current exceeds threshold. |
| Ultra-low shutdown IQ (300 nA) | Enables true system-level power gating in battery-powered applications without significant standby drain. |
Applications
| Point-of-Load Regulation | Space-Constrained Industrial Control |
|---|---|
Use Scenario: Converting 5-V backplane supply to 1.8-V FPGA core voltage on a dense PLC module with <100 mm² available area. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated 1.8-V/2.5-A rail with fast transient response to logic switching events. Use Value: 1.5-MHz operation allows 0.47-µH inductor and 22-µF ceramic output capacitance, reducing total solution size by >40% vs. 500-kHz alternatives. | Use Scenario: Powering ARM Cortex-M7 microcontroller and 12-bit ADC in a handheld test instrument where height is limited to 1.2 mm. IC Role / Device Role / Timing Role: Compact, self-contained DC/DC converter replacing discrete buck controller + MOSFET solution. Use Value: WSON-10 package (0.8-mm height) and integrated 56-mΩ switch eliminate external FET layout, enabling single-sided PCB assembly. |
| Low-Power IoT Sensor Node | Automotive Body Control Module |
Use Scenario: Supplying 3.3-V rail to BLE SoC and MEMS accelerometer in coin-cell–powered environmental sensor. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating in pulse-skipping mode at light load, controlled via EN pin. Use Value: 300-nA shutdown IQ extends 220-mAh coin cell life to >10 years in sleep mode; 93% peak efficiency minimizes thermal rise. | Use Scenario: Generating 5-V auxiliary rail from 12-V vehicle battery for infotainment USB ports and CAN transceivers. IC Role / Device Role / Timing Role: Input-supply regulator with UVLO (2.7 V) and thermal shutdown (165°C) for automotive-grade reliability. Use Value: 3-V to 5.5-V input range accommodates cold-crank dips; integrated protection eliminates need for external supervisor IC. |
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, 3-A rating, same WSON-10 package; higher RDS(ON) (70 mΩ), no frequency foldback. | Better suited for ultra-compact designs needing faster transient response; less robust under sustained overload. | Select when board space is more critical than overload resilience; verify thermal margin at full load. |
| LMR14030SQDDARQ1 | Automotive-grade (AEC-Q100), 40-V max input, 3-A rating, SO PowerPAD package; larger footprint, higher cost. | Required for under-hood applications with 42-V load dump; not suitable for consumer-grade space-constrained designs. | Choose only for automotive safety-critical systems; avoid for industrial or portable applications due to size and cost penalty. |
Compared with TPS62130ARGTR and LMR14030SQDDARQ1, the LMR10530XSD/NOPB offers optimal balance of size, efficiency, and built-in protection for non-automotive 3–5.5-V input applications-delivering 3-A output in the smallest possible footprint without requiring external current sensing or thermal monitoring.
Availability
LMR10530XSD/NOPB is available at Aetrix Electronics and suitable for point-of-load regulation, space-constrained industrial control, and low-power IoT sensor node applications requiring stable component supply and long-term production continuity.
Supply support for LMR10530XSD/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 digital signal solutions for industrial, automotive, and consumer markets.
The LMR10530XSD/NOPB belongs to TI's high-frequency monolithic buck regulator product line, engineered specifically for compact, efficient point-of-load conversion in resource-constrained embedded systems.
FAQ
What is the switching frequency of the LMR10530XSD/NOPB?
The LMR10530XSD/NOPB operates at a fixed 1.5-MHz switching frequency. This value is factory-set and cannot be adjusted externally. It enables use of small inductors (e.g., 0.47 µH) and ceramic capacitors while maintaining high efficiency (up to 93%) and fast transient response. The 1.5-MHz frequency is distinct from the LMR10530Y variant, which runs at 3 MHz.
Does the LMR10530XSD/NOPB require external compensation components?
No, the LMR10530XSD/NOPB uses internally compensated peak current-mode control. No external compensation network (e.g., type-II or type-III compensator) is needed. This simplifies design, reduces BOM count, and ensures stable operation across its full output voltage range (0.6 V to 4.5 V) and load conditions without tuning.
How does the LMR10530XSD/NOPB handle overload or short-circuit conditions?
The LMR10530XSD/NOPB employs multiple protections: cycle-by-cycle current limiting (4.4 A typical), frequency foldback (reducing fSW to 400 kHz when FB < 0.32 V), and thermal shutdown (165°C trip). During sustained overload, it enters hiccup mode-shutting down, cooling, then attempting restart-preventing damage without requiring external circuitry.
What is the purpose of the NC pin on the LMR10530XSD/NOPB?
Pin 4 of the LMR10530XSD/NOPB is labeled NC (No Connect) and has no internal function. Per TI's datasheet, it must be connected to PGND-not left floating-to ensure mechanical stability, improve thermal conduction through the package, and reduce EMI susceptibility. Failure to ground this pin may degrade thermal performance and EMC behavior.
Can the LMR10530XSD/NOPB be used with an input voltage below 3 V?
No. The LMR10530XSD/NOPB has a recommended operating input range of 3 V to 5.5 V and an absolute maximum rating of –0.5 V to 7 V. Its undervoltage lockout (UVLO) activates below 2.7 V (rising) and disables operation until VIN exceeds this threshold. Operation below 3 V violates recommended ratings and risks unstable regulation or failure to start.
LMR10530XSD/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 10-WFDFN 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:
- 3A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (3x3)
LMR10530XSD/NOPB FAQ
1.How can I place an order for LMR10530XSD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR10530XSD/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 LMR10530XSD/NOPB reliable?
The price and inventory of LMR10530XSD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR10530XSD/NOPB is usually 5 days.
3.What payment methods are accepted for LMR10530XSD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR10530XSD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR10530XSD/NOPB?
LMR10530XSD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR10530XSD/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 LMR10530XSD/NOPB?
For technical support, including LMR10530XSD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR10530XSD/NOPB requirements.
6.How does Aetrix verify that LMR10530XSD/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR10530XSD/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 LMR10530XSD/NOPB meets industry standards.
7.What is the process for return or replacement of LMR10530XSD/NOPB?
All LMR10530XSD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR10530XSD/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 LMR10530XSD/NOPB part is unused and in its original packaging.
Return procedure for LMR10530XSD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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