LP8545SQX/NOPB Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
The LP8545SQX/NOPB is a 6-channel high-efficiency LED backlight driver IC from Texas Instruments in a 24-pin QFN package, featuring serial interface control, flexible external or internal FET configuration, and optimized for notebook and tablet display backlights. Delivers precise brightness control for thin flat-panel displays. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 25
- Lifecycle
- ACTIVE
- Datasheet
- LP8545SQX/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9750(MOQ 1)
- Temp Range
- -30.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LP8545SQX/NOPB?
- Six independent LED current channels with serial (I2C/SPI) interface enabling digital brightness control from the system processor without external DACs
- Flexible external/internal FET configuration allowing the designer to optimize between BOM cost and switch efficiency for each notebook platform
- High-efficiency boost converter topology maximizing battery life in notebook and tablet backlight applications across a wide LED string voltage range
- Compact 24-pin QFN package (S-PQCC-N24) enabling minimal PCB footprint critical for ultrathin notebook and portable display designs
What is LP8545SQX/NOPB used for?
The LP8545SQX/NOPB is designed specifically for LED backlight control in notebook computers, tablets, and portable flat-panel displays where high efficiency and compact size directly impact battery life and thermal performance. Its six-channel architecture supports both single-string and multi-string LED configurations, allowing display designers to achieve uniform brightness across wide-format panels. The serial interface enables seamless integration with application processors for software-controlled adaptive brightness, ambient light response, and power-saving dimming modes.
What are the specifications of LP8545SQX/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Data Input Mode | SERIAL |
| Input Characteristics | STANDARD |
| Interface IC Type | LED DISPLAY DRIVER |
| JESD-30 Code | S-PQCC-N24 |
| JESD-609 Code | e3 |
| Multiplexed Display Capability | NO |
| Number of Channels | 6 |
| Number of Functions | 1 |
| Number of Segments | 60 |
| Output Characteristics | CONSTANT-CURRENT |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC24,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.001mA |
| Supply Voltage-Max | 22V |
| Supply Voltage-Min | 5.5V |
| Supply Voltage-Nom | 12V |
| Surface Mount | YES |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| fmax-Min | 1.25MHz |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LP8545SQX/NOPB datasheet?
LP8545SQX/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LP8545SQX/NOPB?
Compatible alternatives and drop-in replacements for LP8545SQX/NOPB:
Frequently Asked Questions
What is the LP8545SQX/NOPB and what is its primary application?
The LP8545SQX/NOPB is a six-channel high-efficiency LED backlight driver IC from Texas Instruments. Its primary application is driving LED backlight strings in notebook computers, tablets, and other portable display devices. It uses a serial control interface and supports both external and internal FET configurations to optimize efficiency for different notebook platform designs.
How many LED channels does the LP8545SQX/NOPB support?
The LP8545SQX/NOPB supports six independent LED driver channels, allowing it to drive multiple parallel LED strings for uniform backlight illumination across wide-format notebook LCD panels. The six-channel design helps balance current across LED strings and compensates for manufacturing variations in LED forward voltage, resulting in more even brightness distribution.
What interface does the LP8545SQX/NOPB use for brightness control?
The LP8545SQX/NOPB uses a serial data input interface (as indicated by its 'SERIAL' data input mode specification) for digital brightness control, allowing the system processor to adjust backlight intensity via I2C or SPI commands. This enables software-controlled adaptive brightness features such as ambient light response, content-based dimming, and power-saving modes in notebook operating systems.
What package does the LP8545SQX/NOPB use?
The LP8545SQX/NOPB is housed in a 24-pin QFN (Quad Flat No-Lead) package, corresponding to JESD-30 code S-PQCC-N24. The /NOPB suffix confirms it is RoHS compliant and lead-free (No Pb). The QFN package provides an excellent thermal path through its exposed pad, which is important for dissipating heat in LED driver applications while maintaining a minimal PCB footprint.
What does the flexible external/internal FET feature of the LP8545SQX/NOPB mean?
The LP8545SQX/NOPB's flexible FET control allows the system designer to choose between using the IC's internal power FET for compact designs with fewer external components, or connecting an external FET for higher current handling and improved switching efficiency in applications where battery life is critical. This flexibility helps optimize the design tradeoff between BOM cost, PCB area, and power conversion efficiency for each specific notebook or tablet platform.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.6000 | $2.60 |
| 500+ | $1.0725 | $536.25 |
| 933+ | $0.9750 | $909.67 |
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