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Texas Instruments LM3410YMYX/NOPB
- Part No.:
- LM3410YMYX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-PowerTSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3410YMYX/NOPB.pdf
- Description:
- IC LED DRV RGLTR PWM 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,413
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Product details
Overview
LM3410YMYX/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 capability. It operates from 2.7 V to 5.5 V input, delivers up to 24 V output, and regulates LED current via external sense resistor - used in automotive interior lighting, handheld device backlighting, and HB-LED flash circuits.
For engineers reviewing the LM3410YMYX/NOPB datasheet, LM3410YMYX/NOPB pinout, LM3410YMYX/NOPB application, or LM3410YMYX/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 PCB layouts.
Technical Context
The LM3410YMYX/NOPB implements current-mode PWM control with fixed 525-kHz oscillator, cycle-by-cycle overcurrent protection, and internal soft-start. Its error amplifier compares FB voltage against 190-mV reference to adjust duty cycle, enabling precise constant-current regulation independent of LED forward voltage variation.
It supports both boost and SEPIC topologies using minimal external components: single inductor, Schottky diode, input/output capacitors, and current-sense resistor. DIM pin accepts 0–100% PWM signals (1 Hz–25 kHz) for analog-equivalent brightness control without color shift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 525 kHz - enables use of sub-2.2 µH inductors and 0.47 µF ceramic output capacitors, reducing board area by >40% vs lower-frequency drivers |
| Feedback Reference Voltage | 190 mV ±12 mV - sets LED current via RSET = 190 mV / ILED; low tolerance minimizes current variation across temperature |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (2.7–4.2 V) and USB-powered systems without LDO pre-regulation |
| Output Voltage Range | 3 V to 24 V - supports up to 7-series white LEDs (3.4 V each) or high-VF HB-LEDs in automotive cabin lighting |
| Switch Current Limit | 2.8 A typical - sustains peak inductor current for high-brightness flash operation with <100 ns response to overcurrent events |
| Shutdown Current | 80 nA - allows battery-backed systems to retain >95% charge over 1-year storage without compromising turn-on latency |
| Thermal Shutdown Threshold | 165°C - protects die during sustained overload or poor heatsinking; auto-recovery at ~150°C prevents latch-up |
Pinout & Package
LM3410YMYX/NOPB uses the 5-pin SOT-23 package (3.00 mm × 3.00 mm), optimized for thermal performance in compact LED driver layouts. The exposed pad is not present in this variant; thermal dissipation relies on PCB copper area under pins 2 (GND) and 5 (VIN).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch node output | Drives inductor in boost/SEPIC topology; must connect directly to inductor and Schottky anode with minimal trace length to reduce EMI |
| 2 (GND) | Signal ground | Reference for FB and DIM; requires low-inductance connection to bottom resistor of RSET network and PCB ground plane |
| 3 (FB) | Current-sense feedback input | Monitors voltage across RSET; 190-mV threshold defines regulated LED current; sensitive to noise - route away from SW and VIN |
| 4 (DIM) | PWM dimming/shutdown control | Logic-high (>1.8 V) enables operation; 0–100% PWM duty cycle linearly scales average LED current; must not float or exceed VIN + 0.3 V |
| 5 (VIN) | Power supply input | Supplies internal bias and NMOS gate drive; requires local 2.2–22 µF MLCC decoupling within 3 mm of pin to suppress switching transients |
Key Features
| Feature | Design Value |
|---|---|
| Internal 170-mΩ NMOS switch | Eliminates external MOSFET and gate driver, reducing BOM count by 3 parts and layout area by ≥25% vs discrete solutions |
| Fixed 525-kHz switching frequency | Enables consistent EMI filtering design and predictable inductor sizing; avoids audible noise in portable devices |
| Internal compensation | Removes need for external compensation network - only 5 external components required for full boost operation |
| 190-mV precision feedback reference | Supports ±3% LED current accuracy over –40°C to 125°C without calibration or trimming |
| Ultra-low 80-nA shutdown current | Extends battery life in always-on standby applications (e.g., automotive courtesy lights) beyond 5 years on CR2032 |
Applications
| Automotive Interior Lighting | Handheld Device Backlight |
|---|---|
Use Scenario: Constant-current driver for map-light and dome-light LED strings in passenger compartment. IC Role / Device Role / Timing Role: Regulates current through 3–5 series white LEDs despite 9–16 V battery variation and cold-cranking dips. Use Value: Maintains consistent luminance across ambient temperatures (–40°C to 85°C) and input voltage transients per ISO 7637-2 Pulse 4. | Use Scenario: Boost-mode backlight driver for 4.3-inch TFT LCD in ruggedized industrial PDA. IC Role / Device Role / Timing Role: Generates 18 V from 3.3 V rail to drive 12-LED parallel string with 200 Hz PWM dimming. Use Value: Achieves >85% efficiency at 150 mA total output while occupying <12 mm² PCB area including passives. |
| HB-LED Flash Driver | OLED Power Management |
Use Scenario: High-current pulse driver for smartphone camera flash LEDs requiring 1.2 A peak for 200 ms. IC Role / Device Role / Timing Role: Delivers regulated 1.2 A into 3-series LEDs using internal 2.8-A switch; DIM pin triggers strobe timing. Use Value: Enables 1/1000 s exposure sync without current droop or thermal foldback due to 525-kHz loop bandwidth. | Use Scenario: SEPIC-based power supply for active-matrix OLED display with variable VDD (5–12 V) from 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: Provides non-inverting, buck-boost output with tight current regulation for OLED pixel current sources. Use Value: Eliminates need for separate buck and boost converters; maintains <±2% output regulation during battery discharge from 4.2 V to 3.0 V. |
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 |
|---|---|---|---|
| LM3410XMYX/NOPB | 1.6-MHz switching frequency; higher RDS(on) (190 mΩ WSON); same pinout but different frequency bin | Better suited for ultra-compact layouts needing <1 µH inductors; reduced efficiency at high output currents due to higher switching losses | Select when board area is constrained and input voltage >3.3 V; avoid for >1 A continuous LED loads |
| TPS61061DRVR | 600-kHz fixed frequency; 1.2-A switch limit; integrated 0.2-Ω current-sense resistor; no DIM pin - uses I2C interface | Targets low-power indicator LEDs (<150 mA); lacks analog PWM dimming; requires MCU communication for brightness control | Choose for I2C-configurable designs where firmware control outweighs analog simplicity; not drop-in for DIM-driven systems |
Compared with LM3410YMYX/NOPB, LM3410XMYX/NOPB trades efficiency for smaller magnetics, while TPS61061DRVR replaces analog dimming with digital configurability - making LM3410YMYX/NOPB optimal for cost-sensitive, high-current, analog-dimming automotive and industrial LED systems.
Availability
LM3410YMYX/NOPB is available at Aetrix Electronics and suitable for automotive interior lighting, handheld device backlighting, and HB-LED flash applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 1 qualification.
Supply support for LM3410YMYX/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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The LM3410 product line delivers highly integrated, thermally robust LED drivers targeting space-constrained, high-reliability lighting systems where analog dimming, wide input range, and internal compensation simplify design.
FAQ
What is the maximum LED string voltage supported by LM3410YMYX/NOPB?
The LM3410YMYX/NOPB supports output voltages up to 24 V, enabling driving of up to seven 3.4-V white LEDs in series. This limit is defined by the absolute maximum SW pin voltage rating of 26.5 V and the internal current-sense architecture, which maintains regulation as long as (VF × NLEDs) + 190 mV remains below 24 V. Exceeding this risks loss of regulation and thermal stress.
Can LM3410YMYX/NOPB be used in SEPIC topology, and what changes are required?
Yes, LM3410YMYX/NOPB supports SEPIC operation per TI's Application Report SNVA229. Required changes versus boost: add coupling capacitor C2 between SW and output, second inductor L2, and reposition diode D1 to connect SW to L2. No IC configuration change is needed - the same 525-kHz oscillator, current-mode control, and FB sensing apply directly to SEPIC mode.
What is the recommended RSET value for 350-mA LED current with LM3410YMYX/NOPB?
Using the formula RSET = VFB / ILED and nominal VFB = 190 mV, the calculated RSET is 543 mΩ. A standard 560-mΩ, 1% tolerance resistor yields 339 mA - within ±3.2% of target. TI recommends metal-film or thin-film resistors with ≤50 ppm/°C TCR placed adjacent to FB and GND pins to minimize thermal drift effects on LM3410YMYX/NOPB current accuracy.
Does LM3410YMYX/NOPB require external compensation components?
No, LM3410YMYX/NOPB features fully internal compensation, eliminating external RC networks typically needed in current-mode boost controllers. This reduces bill-of-materials count by up to four passive components and removes tuning complexity - the device achieves stable operation across its full operating range (2.7–5.5 V input, 3–24 V output, –40°C to 125°C) with only five external parts: inductor, diode, input cap, output cap, and RSET.
How does the DIM pin function during shutdown and PWM dimming modes?
The DIM pin serves dual functions: logic-level enable/disable and analog-equivalent PWM dimming. At DC voltage <0.4 V, LM3410YMYX/NOPB enters shutdown with 80-nA quiescent current. At >1.8 V, it operates continuously. For dimming, applying 1–25 kHz PWM with 0–100% duty cycle linearly scales average LED current - e.g., 50% duty cycle delivers 50% average current - while preserving color point and avoiding low-frequency flicker inherent to analog current reduction.
LM3410YMYX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerTSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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:
- 8-HVSSOP
LM3410YMYX/NOPB FAQ
1.How can I place an order for LM3410YMYX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3410YMYX/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 LM3410YMYX/NOPB reliable?
The price and inventory of LM3410YMYX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3410YMYX/NOPB is usually 5 days.
3.What payment methods are accepted for LM3410YMYX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3410YMYX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3410YMYX/NOPB?
LM3410YMYX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3410YMYX/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 LM3410YMYX/NOPB?
For technical support, including LM3410YMYX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3410YMYX/NOPB requirements.
6.How does Aetrix verify that LM3410YMYX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3410YMYX/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 LM3410YMYX/NOPB meets industry standards.
7.What is the process for return or replacement of LM3410YMYX/NOPB?
All LM3410YMYX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3410YMYX/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 LM3410YMYX/NOPB part is unused and in its original packaging.
Return procedure for LM3410YMYX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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