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Texas Instruments LMR10530YSD/NOPB
- Part No.:
- LMR10530YSD/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LMR10530YSD/NOPB.pdf
- Description:
- IC REG BUCK ADJ 3A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,491
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Product details
Overview
LMR10530YSD/NOPB from Texas Instruments is a monolithic 3-A, 3-MHz synchronous step-down DC/DC regulator in a 10-pin WSON (3 mm × 3 mm) package, featuring an internal 56-mΩ PMOS switch, peak current-mode control, and 0.6-V feedback reference. It delivers high power density for point-of-load conversion from 3.3-V or 5-V rails in space-constrained industrial and embedded systems.
For engineers reviewing the LMR10530YSD/NOPB datasheet, LMR10530YSD/NOPB pinout, LMR10530YSD/NOPB application, or LMR10530YSD/NOPB equivalent, key selection criteria include confirmed 3-MHz switching frequency, 3-A continuous output capability, 300-nA shutdown IQ, internal soft-start, and thermal/overcurrent protection - all validated for stable operation across –40°C to +125°C junction temperature.
Technical Context
The LMR10530YSD/NOPB implements fixed-frequency peak current-mode control with internally compensated loop dynamics, enabling fast transient response without external compensation components. Its 3-MHz nominal switching frequency supports ultra-small inductors (e.g., ≤1.0 µH) and ceramic output capacitors while maintaining ≥93% efficiency at full load.
It integrates cycle-by-cycle current limiting (4.4 A typical), thermal shutdown (165°C trip), output overvoltage protection (0.69 V FB threshold), and frequency foldback (reducing to 800 kHz under fault conditions). The dual-input architecture separates VINC (bias supply) and VIND (power input), improving noise immunity and regulation accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 3.0 MHz (nominal); enables use of sub-1.0 µH inductors and compact 0603/0805 ceramic capacitors. |
| Output Current | 3 A continuous; sustained without derating at TJ ≤ 125°C on standard 4-layer JEDEC board. |
| Feedback Voltage | 0.600 V (±2%); sets precise output voltage via external resistor divider (e.g., 3.3 V = 10 kΩ/2.05 kΩ). |
| Input Voltage Range | 3.0 V to 5.5 V; compatible with 3.3-V and 5-V system rails, with 2.9-V UVLO turn-on and 2.35-V turn-off. |
| Shutdown Quiescent Current | 300 nA typical; enables battery-backed or always-on systems to maintain >1-year shelf life. |
| PMOS RDS(ON) | 56 mΩ (typical); minimizes conduction loss at 3-A load, supporting ≥93% peak efficiency at 5-VIN/3.3-VOUT. |
| Operating Junction Temp | –40°C to +125°C; qualified for industrial temperature grade with thermal shutdown hysteresis of 15°C. |
Pinout & Package
LMR10530YSD/NOPB uses a thermally enhanced 10-pin WSON package (3.00 mm × 3.00 mm × 0.80 mm) with exposed die attach pad (DAP) for low-θJC (12°C/W) thermal path to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VINC | Bias supply input for internal control circuitry; requires local 0.1-µF ceramic bypass to SGND. |
| 2 | EN | Enable logic input; >1.8 V enables regulation, <0.4 V enters 300-nA shutdown; no internal pull-up. |
| 3 | SGND | Analog signal ground; reference point for FB divider; place lower resistor adjacent to minimize noise coupling. |
| 4 | NC | No-connect terminal; must be tied to PGND or left floating per layout guidelines (TI SNVS814B §9.1). |
| 5 | FB | Resistor-divider feedback node; senses output voltage with 0.6-V reference and 0.1-nA bias current. |
| 6 | PGND | Power ground return for internal PMOS switch; connect directly to DAP and input/output capacitor grounds. |
| 7, 8 | SW | Switch node; connects to inductor and catch diode; handles high dV/dt transients; requires tight loop area. |
| 9, 10 | VIND | Main power input; dual pins reduce IR drop and improve thermal dissipation; bypass locally to PGND. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated peak current-mode control | Eliminates need for external compensation network; ensures stable regulation across 0.6–4.5 V output range. |
| Frequency foldback | Reduces switching frequency to 800 kHz during startup/faults, limiting peak switch current and thermal stress. |
| Internal soft-start | Ramps FB reference from 0 V to 0.6 V over ~600 µs, controlling output rise time and minimizing input inrush. |
| Output overvoltage protection | Disables PMOS switch if FB exceeds 0.69 V (15% above VREF), preventing damage to downstream loads. |
| Dual input rail separation (VINC/VIND) | Isolates bias circuitry from power-switch noise, improving PSRR and load regulation accuracy. |
Applications
| Point-of-Load Regulation | Industrial Sensor Node Power |
|---|---|
|
Use Scenario: Local 3.3-V supply generation from a 5-V backplane in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3-V/3-A power to FPGA I/O banks and ADC drivers. Use Value: 3-MHz operation allows 1.0-µH inductor and 22-µF ceramic output capacitance, reducing solution size by >40% vs. 500-kHz alternatives. |
Use Scenario: Powering ultra-low-power wireless sensor transceivers (e.g., TI CC2652) in factory automation nodes. IC Role / Device Role / Timing Role: Efficient step-down converter supplying 1.8-V core voltage with dynamic enable/disable via microcontroller GPIO. Use Value: 300-nA shutdown IQ extends battery life to >5 years in sleep mode; fast 3-MHz transient response maintains RF stability during burst transmission. |
| Embedded Display Backlight Driver | Automotive Infotainment Core Supply |
|
Use Scenario: Generating 5-V bias for LED driver ICs in automotive instrument cluster TFT-LCD backlight systems. IC Role / Device Role / Timing Role: High-efficiency intermediate rail converter stepping down from 12-V vehicle battery to 5-V LED driver input. Use Value: 56-mΩ PMOS switch and 93% efficiency at 2-A load minimize thermal rise in confined dashboard cavity; thermal shutdown prevents fault propagation. |
Use Scenario: Providing 1.1-V core supply to ARM Cortex-A53 application processor in head unit SoC subsystem. IC Role / Device Role / Timing Role: Precision buck regulator with 0.6-V FB reference and ±2% output tolerance for digital core voltage domain. Use Value: Internal soft-start and cycle-by-cycle current limit ensure clean power-up sequencing and robustness against short-circuit events on SoC power rails. |
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-A, 3-V to 17-V input; higher VIN range but larger 3.5-mm × 3.5-mm QFN package. | Preferred where input may exceed 5.5 V (e.g., 12-V automotive transients); less optimal for strict 3.3-V rail-only designs. | Select TPS62130ARGTR only if extended input voltage range is required; LMR10530YSD/NOPB offers superior power density at 3–5.5 V. |
| MP2315GJ-Z | 3-MHz, 3-A, 4.5–28-V input; external compensation, no integrated soft-start; smaller 2-mm × 2-mm TSOT23-8 package. | Suitable for high-input-voltage industrial sensors; lacks internal soft-start and OVP, requiring additional design effort. | Choose MP2315GJ-Z when board space is extreme constraint and input >4.5 V; LMR10530YSD/NOPB provides faster time-to-market with integrated features. |
Compared with TPS62130ARGTR and MP2315GJ-Z, the LMR10530YSD/NOPB delivers best-in-class power density for 3–5.5-V inputs due to its 3-mm × 3-mm WSON footprint, internal soft-start, and output overvoltage protection - reducing BOM count and validation effort in space-limited embedded systems.
Availability
LMR10530YSD/NOPB is available at Aetrix Electronics and suitable for industrial PLCs, wireless sensor nodes, automotive display systems, and embedded processor core supplies requiring stable component supply and long-term production continuity.
Supply support for LMR10530YSD/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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC/DC conversion.
The LMR10530YSD/NOPB belongs to TI's LMR monolithic buck regulator family, engineered for high-frequency, high-current point-of-load applications where minimal PCB area and fast transient response are critical design requirements.
FAQ
What is the confirmed switching frequency of the LMR10530YSD/NOPB?
The LMR10530YSD/NOPB is specifically the 3-MHz variant of the LMR10530 family, with nominal switching frequency of 3.0 MHz (range 2.25–3.75 MHz over temperature). This is factory-trimmed and documented in TI's SNVS814B datasheet Section 6.3, distinguishing it from the 1.5-MHz LMR10530X variant.
Does the LMR10530YSD/NOPB require external compensation components?
No, the LMR10530YSD/NOPB features fully internal compensation for its peak current-mode control loop. As confirmed in the "Features" and "Detailed Description" sections of the TI datasheet, no external compensation network is needed - simplifying design and reducing bill-of-materials cost.
What is the maximum continuous output current rating for the LMR10530YSD/NOPB?
The LMR10530YSD/NOPB is rated for 3-A steady-state output current under recommended operating conditions (TJ ≤ 125°C on standard JEDEC board). This is verified in the "Features" list and electrical characteristics table (Section 6.3) of the official TI datasheet SNVS814B.
How does the LMR10530YSD/NOPB handle thermal overload conditions?
The LMR10530YSD/NOPB incorporates thermal shutdown that disables the internal PMOS switch when junction temperature exceeds 165°C (typical), with 15°C hysteresis. Recovery occurs only after temperature falls below ~150°C, as specified in Section 6.3 of the TI SNVS814B datasheet.
Can the LMR10530YSD/NOPB operate with a 3.3-V input supply?
Yes, the LMR10530YSD/NOPB supports input voltages from 3.0 V to 5.5 V, making 3.3-V operation fully valid. Its undervoltage lockout activates at 2.9 V (rising), ensuring reliable startup and regulation across the entire 3.3-V rail tolerance range.
LMR10530YSD/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:
- 3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (3x3)
LMR10530YSD/NOPB FAQ
1.How can I place an order for LMR10530YSD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR10530YSD/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 LMR10530YSD/NOPB reliable?
The price and inventory of LMR10530YSD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR10530YSD/NOPB is usually 5 days.
3.What payment methods are accepted for LMR10530YSD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR10530YSD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR10530YSD/NOPB?
LMR10530YSD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR10530YSD/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 LMR10530YSD/NOPB?
For technical support, including LMR10530YSD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR10530YSD/NOPB requirements.
6.How does Aetrix verify that LMR10530YSD/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR10530YSD/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 LMR10530YSD/NOPB meets industry standards.
7.What is the process for return or replacement of LMR10530YSD/NOPB?
All LMR10530YSD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR10530YSD/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 LMR10530YSD/NOPB part is unused and in its original packaging.
Return procedure for LMR10530YSD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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