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Texas Instruments LM3410YMY/NOPB
- Part No.:
- LM3410YMY/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-PowerTSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3410YMY/NOPB.pdf
- Description:
- IC LED DRV RGLTR PWM 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:440
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Product details
Overview
LM3410YMY/NOPB from Texas Instruments is a constant-current, current-mode PWM boost/SEPIC LED driver IC with internal 170-mΩ NMOS switch, 525-kHz fixed switching frequency, 190-mV internal reference, and 2.8-A typical peak switch current limit. It regulates LED current via feedback resistor (FB pin), supports 2.7–5.5-V input, delivers up to 24-V output, and enables PWM dimming via DIM pin - used in automotive LED backlighting and handheld device flash drivers.
For engineers reviewing the LM3410YMY/NOPB datasheet, LM3410YMY/NOPB pinout, LM3410YMY/NOPB application, or LM3410YMY/NOPB equivalent, key selection considerations include its 525-kHz switching frequency (vs. 1.6-MHz LM3410X variants), SOT-23-5 package thermal limitations (RθJA = 164.2°C/W), internal compensation eliminating external loop components, and automotive-grade AEC-Q100 qualification (Grade 1, –40°C to 125°C).
Technical Context
The LM3410YMY/NOPB implements current-mode PWM control with internal slope compensation and a fixed 525-kHz oscillator. Its error amplifier compares FB voltage against a 190-mV reference to adjust duty cycle, while cycle-by-cycle current limiting protects the internal NMOS switch up to 2.8-A peak.
It operates in boost or SEPIC topology with no external compensation required. The DIM pin accepts 0–100% PWM signals (1 Hz–25 kHz) for analog-equivalent brightness control, and shutdown mode draws only 80 nA quiescent current. Thermal shutdown activates at 165°C junction temperature and recovers at ~150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 525 kHz - enables use of small surface-mount inductors & ceramic capacitors; reduces board area vs. lower-frequency alternatives. |
| Feedback Reference Voltage | 190 mV ±12 mV - sets LED current via RSET = 0.19 V / ILED; tight tolerance ensures accurate current regulation across temperature. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (2.7–4.5 V) and 3.3-V/5-V system rails without pre-regulation. |
| Output Voltage Range | 3 V to 24 V - supports strings of up to 7 white LEDs (VF ≈ 3.4 V) or 4 high-brightness OLEDs in boost configuration. |
| Peak Switch Current Limit | 2.8 A (typical) - defines maximum inductor peak current; limits stress on internal NMOS during startup or overload. |
| Internal NMOS RDS(on) | 170 mΩ (MSOP/SOT-23) - determines conduction loss; combined with 525-kHz operation, enables >85% efficiency at 350-mA LED load. |
| Shutdown Quiescent Current | 80 nA - enables ultra-low-power standby in battery-powered devices; allows direct connection to microcontroller GPIO without pull-up loading. |
Pinout & Package
LM3410YMY/NOPB uses the 5-pin SOT-23 package (3.00 mm × 3.00 mm body), optimized for compact LED driver layouts. Thermal performance is constrained by high RθJA (164.2°C/W), requiring careful PCB copper pour and thermal vias under the exposed pad (GND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Power input | Supplies power stage; must be decoupled with ≥2.2-µF MLCC close to pin; UVLO triggers at 2.3 V (rising) / 1.9 V (falling). |
| GND (Pin 2) | Signal ground | Reference for FB and DIM; place bottom resistor of feedback network adjacent to this pin to minimize noise coupling. |
| FB (Pin 3) | Current sense input | Connects to RSET to ground; regulates LED current via 190-mV reference; bias current <1 µA minimizes resistor error. |
| DIM (Pin 4) | Control input | Accepts PWM signal (0–100% duty, 1 Hz–25 kHz); logic-high (>1.8 V) enables operation; floating or >VIN+0.3 V damages device. |
| SW (Pin 1) | Switch node | Drives external inductor; swings from GND to VOUT+VF(D1); requires low-inductance layout to minimize EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Compensation | Eliminates need for external compensation network - simplifies design, reduces BOM count, and guarantees stability across operating conditions. |
| PWM Dimming Interface | DIM pin supports direct microcontroller PWM drive without external level-shifting or filtering - enables precise brightness control down to µA-level average LED current. |
| Thermal Shutdown Protection | Turns off SW at 165°C junction temperature and auto-recovers at ~150°C - prevents permanent damage during transient overloads or poor heatsinking. |
| AEC-Q100 Qualified (Grade 1) | Validated for automotive ambient temperatures (–40°C to +125°C), HBM ±2 kV, CDM ±1 kV - suitable for instrument cluster and interior lighting without additional qualification. |
| Ultra-Low Shutdown Current | 80 nA max - extends battery life in portable devices; enables always-on dimming control without measurable drain on primary cell or coin cell. |
Applications
| Automotive Instrument Cluster Backlighting | Handheld Device LED Flash |
|---|---|
|
Use Scenario: Driving 3–5 white LEDs in series behind TFT LCD in vehicle dashboard under wide temperature (-40°C to 85°C ambient) and variable 9–16-V battery input (regulated to 5 V). IC Role / Device Role / Timing Role: Constant-current boost controller regulating 20–100 mA per string; uses DIM pin for dynamic brightness adjustment synchronized to CAN bus commands. Use Value: AEC-Q100 Grade 1 rating ensures reliability; 525-kHz switching avoids AM radio band interference; internal compensation eliminates tuning effort across production lots. |
Use Scenario: Powering dual high-intensity white LEDs in smartphone camera flash module powered by 3.7-V Li-ion battery. IC Role / Device Role / Timing Role: SEPIC regulator maintaining constant 1-A LED current as battery discharges from 4.2 V to 3.2 V; DIM pin driven by baseband processor PWM at 200 Hz. Use Value: Single-inductor SEPIC topology avoids polarity inversion; 2.8-A switch current supports burst-mode flash pulses; 80-nA shutdown enables instant wake-up from deep sleep. |
| Li-ion Powered OLED Display Driver | Industrial Handheld Scanner Illumination |
|
Use Scenario: Supplying regulated current to 4-series OLED subpixels in portable medical display, operating from 3.6-V nominal battery. IC Role / Device Role / Timing Role: Boost converter delivering 12–18 V at 5–20 mA per channel; FB voltage scaled via precision resistor to match OLED forward voltage drift. Use Value: 190-mV reference enables <±3% LED current accuracy over temperature; 525-kHz frequency allows 2.2-µH inductor size reduction versus 100-kHz alternatives. |
Use Scenario: Illuminating linear CCD sensor in rugged barcode scanner using 6-LED array, powered by replaceable AA alkaline pack (1.8–3.0 V). IC Role / Device Role / Timing Role: Boost driver with soft-start and thermal foldback; DIM pin controlled by FPGA to pulse illumination synchronously with image capture. Use Value: Internal soft-start prevents inrush into large output capacitor; thermal shutdown protects during extended scanning; SOT-23 footprint fits narrow PCB edge. |
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 |
|---|---|---|---|
| LM3410XMY/NOPB | 1.6-MHz switching frequency; higher RDS(on) (190 mΩ WSON); same pinout but different frequency bin. | Better suited for space-constrained designs needing smaller inductors; less efficient at high current due to higher switching losses. | Select LM3410XMY/NOPB when board area is critical and input voltage is stable; LM3410YMY/NOPB preferred for thermal-limited or noise-sensitive automotive applications. |
| TPS61061DRVR | 600-kHz frequency; 1.5-A switch limit; integrated Schottky diode; no DIM pin - uses EN for on/off only. | Lacks PWM dimming capability; limited to lower-current LED strings; simpler layout but no analog-equivalent brightness control. | Choose TPS61061DRVR for cost-sensitive, low-current indicator lights; LM3410YMY/NOPB remains necessary for dimmable flash or automotive backlighting requiring full 0–100% control. |
Compared with LM3410XMY/NOPB, LM3410YMY/NOPB trades higher inductor size for lower EMI and better thermal margin; versus TPS61061DRVR, it provides true PWM dimming and higher current capability at the cost of external diode and more complex layout.
Availability
LM3410YMY/NOPB is available at Aetrix Electronics and suitable for automotive instrument clusters, handheld device flash modules, and industrial scanner illumination requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LM3410YMY/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 headquartered in Dallas, Texas, designing and manufacturing analog, embedded processing, and digital signal processing technologies since 1930.
The LM3410 family was developed specifically for high-efficiency, compact LED current regulation in battery-powered and automotive systems - emphasizing integration (internal compensation, MOSFET, reference), reliability (AEC-Q100), and ease of use (minimal external components).
FAQ
What is the maximum LED string voltage supported by LM3410YMY/NOPB?
The LM3410YMY/NOPB supports output voltages up to 24 V, as specified in its absolute maximum ratings and recommended operating conditions. This allows driving up to seven standard white LEDs (VF ≈ 3.4 V each) in series, provided the total forward voltage plus 190 mV feedback drop remains below 24 V. Exceeding this limit risks damage to the internal switch or external components.
Does LM3410YMY/NOPB require external compensation components?
No, LM3410YMY/NOPB features fully internal compensation, eliminating the need for external RC networks typically required in voltage-mode or uncompensated current-mode controllers. This simplifies layout, reduces bill-of-materials cost, and guarantees stable operation across all valid input/output conditions without tuning.
Can LM3410YMY/NOPB operate in SEPIC topology, and what changes are needed?
Yes, LM3410YMY/NOPB supports SEPIC operation per TI's application documentation. To implement SEPIC, replace the boost inductor with coupled inductors L1/L2, add a coupling capacitor (CC) between SW and output, and retain the same feedback and dimming circuitry. No IC configuration change is required - the controller inherently supports both topologies.
What is the purpose of the 190-mV reference voltage in LM3410YMY/NOPB?
The 190-mV reference voltage is the internal target for the FB pin. By placing a resistor (RSET) between FB and ground, LED current is set as ILED = 0.19 V / RSET. This precise, temperature-stable reference enables accurate constant-current regulation independent of input or output voltage variations - critical for consistent LED brightness and lifetime.
How does thermal shutdown behave in LM3410YMY/NOPB during sustained overload?
LM3410YMY/NOPB disables the SW pin when junction temperature exceeds 165°C and remains latched off until temperature drops to approximately 150°C. This hysteresis prevents oscillation near the trip point. During shutdown, quiescent current remains at 80 nA, allowing safe cooldown without system reset - essential for automotive and industrial environments where transient overloads may occur.
LM3410YMY/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
LM3410YMY/NOPB FAQ
1.How can I place an order for LM3410YMY/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3410YMY/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 LM3410YMY/NOPB reliable?
The price and inventory of LM3410YMY/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3410YMY/NOPB is usually 5 days.
3.What payment methods are accepted for LM3410YMY/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3410YMY/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3410YMY/NOPB?
LM3410YMY/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3410YMY/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 LM3410YMY/NOPB?
For technical support, including LM3410YMY/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3410YMY/NOPB requirements.
6.How does Aetrix verify that LM3410YMY/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3410YMY/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 LM3410YMY/NOPB meets industry standards.
7.What is the process for return or replacement of LM3410YMY/NOPB?
All LM3410YMY/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3410YMY/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 LM3410YMY/NOPB part is unused and in its original packaging.
Return procedure for LM3410YMY/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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