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Texas Instruments LM3410YMFX/NOPB
- Part No.:
- LM3410YMFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM3410YMFX/NOPB.pdf
- Description:
- IC LED DRV RGLTR PWM SOT23-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3410YMFX/NOPB from Texas Instruments is a constant-current, 525-kHz boost/SEPIC LED driver IC with internal NMOS switch (170 mΩ), 190-mV feedback reference, and PWM dimming control. It delivers up to 2.8-A peak switch current, supports 2.7–5.5-V input and 3–24-V output, and targets handheld LED backlight and automotive HB-LED applications.
For engineers reviewing the LM3410YMFX/NOPB datasheet, LM3410YMFX/NOPB pinout, LM3410YMFX/NOPB application, or LM3410YMFX/NOPB equivalent, key selection criteria include switching frequency (525 kHz), internal compensation, thermal shutdown (165°C), ultra-low shutdown current (80 nA), and SOT-23-5 package compatibility with space-constrained portable designs.
Technical Context
The LM3410YMFX/NOPB implements current-mode PWM control with fixed 525-kHz oscillator, cycle-by-cycle current limiting (2.1–2.8 A), and internal soft-start. Its feedback loop regulates LED current via a single external resistor tied to FB, referencing a precision 190-mV internal voltage reference.
It operates in boost or SEPIC topology using only five external components: inductor, Schottky diode, input/output capacitors, and current-sense resistor. DIM pin accepts 0–100% duty-cycle PWM signals (1 Hz–25 kHz) for analog-equivalent brightness control without altering regulation accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 525 kHz - enables use of sub-2.2-µH inductors and compact ceramic capacitors |
| Feedback Reference Voltage | 190 mV ±12 mV - sets LED current via RSET = 0.19 V / ILED, enabling precise current regulation |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (2.7–4.5 V) and USB-powered systems |
| Output Voltage Range | 3 V to 24 V - supports up to 7-series white LEDs (VF ≈ 3.4 V) or HB-LED strings in automotive lighting |
| Peak Switch Current Limit | 2.8 A typical - defines maximum inductor peak current and limits fault energy during short-circuit events |
| Shutdown Quiescent Current | 80 nA - allows battery-backed systems to maintain >1-year shelf life without significant drain |
| Thermal Shutdown Threshold | 165°C - protects die integrity under sustained overload or poor PCB thermal design |
Pinout & Package
LM3410YMFX/NOPB uses the 5-pin SOT-23 package (3.00 mm × 3.00 mm), optimized for low-profile portable LED drivers. Thermal performance relies on proper GND pad layout and minimal trace inductance on VIN/SW paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Power input | Supplies internal bias and power stage; requires local 2.2–22 µF MLCC with low ESL |
| GND (Pin 2) | Signal ground | Reference for FB and DIM; must be routed close to bottom resistor of RSET network |
| SW (Pin 1) | Switch node | Drives external inductor; high dv/dt node requiring tight layout and Kelvin connection to diode anode |
| FB (Pin 3) | Current sense input | Connects to RSET to ground; regulates LED current by holding voltage at 190 mV |
| DIM (Pin 4) | Enable/dimming control | Logic-level input (0–VIN); 0 V disables device (80 nA IQ), high enables operation and accepts PWM dimming |
Key Features
| Feature | Design Value |
|---|---|
| Internal 170-mΩ NMOS switch | Eliminates external FET and gate driver, reducing BOM count and board area in portable LED drivers |
| Fixed 525-kHz switching frequency | Enables consistent EMI filtering design and predictable inductor sizing across production lots |
| Internal compensation | Removes need for external compensation network, simplifying layout and improving stability margin vs. variable loads |
| PWM dimming via DIM pin | Supports flicker-free brightness control down to µA-level currents without affecting regulation accuracy |
| Thermal shutdown with hysteresis | Shuts off at 165°C and resumes at ~150°C, preventing thermal runaway while allowing safe recovery after transient overloads |
Applications
| LED Backlight for Handheld Displays | Automotive Interior Lighting |
|---|---|
Use Scenario: Driving 3–5 white LEDs in series for smartphone/tablet LCD backlight with battery input (3.0–4.2 V). IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED string current via FB pin and RSET, synchronized to 525-kHz internal clock. Use Value: Achieves >85% efficiency at 200-mA load with <1% current variation across temperature, enabling uniform display brightness. | Use Scenario: Powering map light or dome light LED arrays in vehicles with 12-V nominal supply (9–16 V range after regulation). IC Role / Device Role / Timing Role: SEPIC-mode constant-current driver maintaining stable LED current despite input voltage transients (cold crank, load dump). Use Value: Supports AEC-Q100 Grade 1 qualification (–40°C to 125°C ambient), ensuring reliability in under-hood and cabin environments. |
| Li-ion Powered OLED Drivers | Portable LED Flash Modules |
Use Scenario: Supplying regulated current to RGB OLED panels in wearables where input drops from 4.2 V to 3.0 V during discharge. IC Role / Device Role / Timing Role: SEPIC topology LED driver using internal 525-kHz oscillator and current-mode control to maintain constant current as VIN falls below VOUT. Use Value: Delivers stable luminance across full battery range without requiring dynamic mode switching or external supervision. | Use Scenario: High-brightness flash circuit in compact cameras or barcode scanners powered by two AA batteries (1.8–3.2 V). IC Role / Device Role / Timing Role: Boost-mode LED driver with DIM pin accepting 200-Hz–1-kHz PWM for adjustable flash intensity and duration. Use Value: Enables microsecond-scale turn-on response and precise pulse-width control for strobe synchronization with image sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3410XMF/NOPB | 1.6-MHz switching frequency, higher RDS(on) (190 mΩ WSON), same pinout but different frequency bin | Better suited for ultra-compact layouts requiring <1-µH inductors; lower efficiency at high current due to higher conduction loss | Select LM3410XMF/NOPB when board area is constrained and input ripple sensitivity demands higher fSW. |
| TPS61061DRVR | 600-kHz fixed frequency, 1.8-A switch limit, integrated 0.5-Ω current sense, no DIM pin - uses EN only | Lacks analog-dimming capability; limited to lower-current LED strings (<150 mA); simpler BOM but less flexible dimming control | Choose TPS61061DRVR for cost-sensitive, low-power indicator LED applications where PWM dimming is not required. |
Compared with LM3410YMFX/NOPB, LM3410XMF/NOPB trades higher-frequency operation for reduced efficiency at high load, while TPS61061DRVR sacrifices dimming flexibility and peak current capability for integration and cost-making LM3410YMFX/NOPB optimal for mid-power, thermally managed, dimmable LED systems.
Availability
LM3410YMFX/NOPB is available at Aetrix Electronics and suitable for LED backlight, automotive interior lighting, and portable flash applications requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LM3410YMFX/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, embedded processing, and power management technologies, with leadership in high-reliability automotive and industrial ICs.
The LM3410 family was designed specifically for space-constrained, battery-powered LED current sources-emphasizing internal integration, thermal robustness, and seamless PWM dimming without external controllers.
FAQ
What is the recommended inductor value for LM3410YMFX/NOPB in a 200-mA LED boost application?
For a 200-mA LED boost application with 3.7-V input and 12-V output, TI recommends a 4.7-µH inductor with ≥1.8-A saturation current. This value balances input ripple (≈30% of ILED) and physical size while staying within the LM3410YMFX/NOPB's 2.8-A peak switch limit. Ferrite-core MLCC-compatible inductors with low DCR (<150 mΩ) maximize efficiency. Always verify saturation margin using Equation 10 from the LM3410YMFX/NOPB datasheet.
Does LM3410YMFX/NOPB support SEPIC topology, and what modifications are needed?
Yes, LM3410YMFX/NOPB supports SEPIC topology per TI's Application Note SNVA412. No IC modification is required-only external component changes: add coupling capacitor CC, second inductor L2, and adjust RSET to maintain target LED current. The SEPIC configuration allows output voltage to be greater than or less than input, making LM3410YMFX/NOPB suitable for Li-ion battery applications where VIN varies from 2.7 V to 4.5 V and VOUT is fixed at 5 V or 8 V.
What is the minimum dimming frequency supported by the DIM pin of LM3410YMFX/NOPB?
The DIM pin of LM3410YMFX/NOPB supports PWM dimming from 1 Hz to 25 kHz. For stable current regulation and minimal audible noise, TI recommends 200 Hz to 1 kHz. At frequencies below 100 Hz, LED current may exhibit visible flicker; above 5 kHz, switching losses increase slightly but remain within spec. The LM3410YMFX/NOPB maintains full current accuracy across this entire range without external compensation.
How does the FB pin of LM3410YMFX/NOPB regulate LED current, and what tolerance applies?
The FB pin of LM3410YMFX/NOPB regulates LED current by comparing the voltage across RSET (connected between FB and GND) to an internal 190-mV reference. When VFB = 190 mV, ILED = 0.19 V / RSET. The reference has ±6.3% tolerance (178–202 mV) over –40°C to 125°C, so total LED current accuracy depends on both RSET tolerance and reference drift. Using a 1% metal-film RSET yields typical current error <±7.5%.
Is LM3410YMFX/NOPB qualified for automotive use, and which AEC-Q100 grade does it meet?
LM3410YMFX/NOPB is not automotive-qualified; only the LM3410-Q1 variant meets AEC-Q100 Grade 1 (–40°C to 125°C ambient). LM3410YMFX/NOPB is rated for commercial/industrial use (–40°C to 125°C junction), but lacks the extended reliability testing, failure analysis, and traceability required for automotive applications. For automotive designs, specify LM3410QDBVR or LM3410QDSXR instead of LM3410YMFX/NOPB.
LM3410YMFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- SEPIC, Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 3V ~ 24V
- Current - Output / Channel:
- 2.8A (Switch)
- Frequency:
- 525kHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM3410YMFX/NOPB FAQ
1.How can I place an order for LM3410YMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3410YMFX/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 LM3410YMFX/NOPB reliable?
The price and inventory of LM3410YMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3410YMFX/NOPB is usually 5 days.
3.What payment methods are accepted for LM3410YMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3410YMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3410YMFX/NOPB?
LM3410YMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3410YMFX/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 LM3410YMFX/NOPB?
For technical support, including LM3410YMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3410YMFX/NOPB requirements.
6.How does Aetrix verify that LM3410YMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3410YMFX/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 LM3410YMFX/NOPB meets industry standards.
7.What is the process for return or replacement of LM3410YMFX/NOPB?
All LM3410YMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3410YMFX/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 LM3410YMFX/NOPB part is unused and in its original packaging.
Return procedure for LM3410YMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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