LM3433SQ Texas Instruments Integrated Circuit (Other) In Stock
LM3433SQ is a high brightness LED driver IC from Texas Instruments with current-mode PWM control, supporting adjustable input voltage from 3V to 5.8V. It features pulse width modulation for precise LED current regulation. Ideal for LCD backlighting and general solid-state lighting applications.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 25
- Lifecycle
- OBSOLETE
- Datasheet
- LM3433SQ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control for precise and stable LED current regulation
- Adjustable input voltage range from 3V to 5.8V for flexible power supply design
- 24-pin WQFN package for compact PCB footprint
- Supports high brightness LED arrays for LCD backlighting and general lighting
- Integrated switching controller reduces external component count
Applications
The LM3433SQ is widely used in LCD panel backlighting systems for monitors, notebooks, and TVs where stable, high-brightness LED driving is required. It also serves general solid-state lighting applications such as architectural and industrial luminaires. Its adjustable input voltage range makes it suitable for battery-powered portable devices and low-voltage DC systems.
Specifications
| YTEOL | 0 |
| Additional Feature | ADJUSTABLE INPUT VOLTAGE RANGE FROM 0 TO 5.8V |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.8V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 3.3V |
| JESD-30 Code | S-XQCC-N24 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Package Body Material | UNSPECIFIED |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 1000kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin/Lead (Sn85Pb15) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the LM3433SQ?
The LM3433SQ supports an adjustable input voltage range from 3V to 5.8V, with a nominal operating voltage of 3.3V. This makes it compatible with standard low-voltage power rails commonly used in portable and embedded systems.
What control technique does the LM3433SQ use for LED current regulation?
The LM3433SQ uses current-mode pulse width modulation (PWM) control to regulate LED current. This technique provides fast transient response and inherent cycle-by-cycle current limiting, ensuring consistent brightness and protection against overcurrent conditions.
What package type is the LM3433SQ available in?
The LM3433SQ is available in a 24-pin WQFN (Very Thin Quad Flat No-Lead) package, as indicated by the JESD-30 code S-XQCC-N24. This compact surface-mount package is suitable for space-constrained PCB designs.
What are the typical applications for the LM3433SQ?
The LM3433SQ is typically used in LCD backlighting for monitors, laptops, and televisions, as well as general high-brightness LED lighting systems. Its current-mode switching controller architecture makes it well suited for both portable consumer electronics and industrial lighting applications.
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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.
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