LM3409MY Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM3409MY is a PFET buck controller for high-power LED driving, featuring adjustable current regulation and wide input voltage range. Supports dimming via PWM or analog control with integrated gate driver. From $0.88 in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- LM3409MY Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8812(MOQ 210)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- PFET-based buck topology for high-efficiency LED current control
- Wide input voltage range supports diverse power supply designs
- PWM and analog dimming for precise LED brightness adjustment
- Integrated gate driver reduces external component count
- Adjustable output current regulation for flexible LED configurations
Applications
The LM3409MY is widely used in architectural and industrial LED lighting systems where precise current regulation is critical. It suits automotive interior lighting, display backlighting, and street lighting applications requiring high efficiency and dimming flexibility. Its buck controller architecture also makes it suitable for portable LED drivers and battery-powered lighting equipment.
Specifications
| YTEOL | 0 |
| Interface IC Type | LED DISPLAY DRIVER |
| JESD-30 Code | S-PDSO-G10 |
| Multiplexed Display Capability | NO |
| Number of Functions | 1 |
| Number of Segments | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Supply Voltage-Max | 42V |
| Supply Voltage-Min | 6V |
| Supply Voltage-Nom | 24V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| ## LM3409MY Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3409MY:
suggested
suggested
Frequently Asked Questions
What is the LM3409MY and what does it do?
The LM3409MY is a PFET buck controller from Texas Instruments designed to regulate current through high-power LEDs. It supports adjustable output current, wide input voltage ranges, and both PWM and analog dimming methods, making it ideal for LED lighting applications.
What package does the LM3409MY come in?
The LM3409MY comes in a 10-pin TSSOP (Thin Shrink Small Outline Package) with a heat sink slug, also identified by the JEDEC code S-PDSO-G10. This compact package with exposed thermal pad helps dissipate heat in high-current LED driver designs.
What dimming methods does the LM3409MY support?
The LM3409MY supports both PWM dimming and analog dimming for LED brightness control. PWM dimming offers high dynamic range with consistent color temperature, while analog dimming adjusts the reference current directly. This flexibility suits applications ranging from decorative lighting to industrial displays.
What are common applications for the LM3409MY?
Common applications include architectural LED lighting, automotive interior and accent lighting, display backlighting, street and industrial lighting, and portable battery-powered LED drivers. Its adjustable current regulation and wide input range make it suitable for both AC/DC offline and DC-DC designs.
Are there alternatives or substitutes for the LM3409MY?
Compatible alternatives include the LM3409HV (higher input voltage variant), LM3464 (multi-string controller), and third-party PFET buck LED controllers from manufacturers like Diodes Inc. and ON Semiconductor. Always verify electrical specifications and footprint compatibility before substituting.
Related Guides
How to Choose a 3528 SMD Indicator LED for Blue Status Lighting: Selection Guide
A practical 3528 SMD indicator LED selection guide using 150141BS73100 and related Wurth 150141 variants for blue status lighting.
Jul 5, 2026
BAS70KFILM Design Guide for Low-Leakage Signal Clamping and RF Detector Inputs
Practical BAS70KFILM design guidance for signal clamps, RF detector inputs, leakage control, capacitance, layout, and sourcing alternatives.
Jul 5, 2026
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 210+ | $0.9529 | $200.11 |
| 275+ | $0.9170 | $252.18 |
| 345+ | $0.8812 | $304.01 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”