LM3501TL-21 Texas Instruments Integrated Circuit (Other) In Stock
The LM3501TL-21 is a white LED backlight driver IC designed to drive up to 6 LED segments for LCD backlights in portable displays. It integrates a boost converter operating at 2.1 MHz with current matching across channels. Available in a compact 8-ball micro-SMD package from Texas Instruments, with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LM3501TL-21 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
What are the key features of LM3501TL-21?
- 2.1 MHz fixed switching frequency minimizes external component size, enabling ultra-thin backlight solutions in smartphones and tablets
- 6-channel matched current output drives up to 6 white LEDs in parallel with tight brightness uniformity across all channels
- Micro-SMD package with 8 balls occupies minimal PCB area, ideal for space-constrained portable display designs
What is LM3501TL-21 used for?
The LM3501TL-21 is primarily used in thin LCD backlight modules for smartphones, MP3 players, and handheld gaming consoles where board space is at a premium. Its integrated boost converter and multi-channel LED driver eliminate the need for discrete current-matching resistors, simplifying the BOM and reducing cost. The 2.1 MHz switching frequency also keeps any switching noise outside the AM radio band, supporting clean RF performance in wireless devices.
What are the specifications of LM3501TL-21?
| Pbfree Code | No |
| YTEOL | 0 |
| Interface IC Type | LED DISPLAY DRIVER |
| JESD-30 Code | S-PBGA-B8 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Number of Segments | 6 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Qualification Status | Not Qualified |
| Supply Voltage-Max | 7V |
| Supply Voltage-Min | 2.7V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | BALL |
| Terminal Pitch | 0.5mm |
| Terminal Position | BOTTOM |
| 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 |
Where can I find the LM3501TL-21 datasheet?
LM3501TL-21 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3501TL-21?
Compatible alternatives and drop-in replacements for LM3501TL-21:
Frequently Asked Questions
How many LED channels can the LM3501TL-21 drive simultaneously?
The LM3501TL-21 supports up to 6 white LED channels in parallel, with matched current outputs ensuring uniform brightness across all segments—critical for achieving consistent LCD backlight illumination in portable consumer displays.
What switching frequency does the LM3501TL-21 boost converter use?
The integrated boost converter operates at a fixed 2.1 MHz switching frequency, which keeps noise above the AM radio band and allows the use of small 1 µH inductors and ceramic capacitors, reducing both BOM cost and PCB footprint.
For a slim smartphone design, why is the LM3501TL-21 micro-SMD package a good choice?
The 8-ball micro-SMD package measures approximately 1.0 mm × 1.5 mm with a very thin profile, making it one of the smallest footprints available for a 6-channel LED driver—enabling sub-1 mm z-height placement in ultra-thin smartphone PCB stacks.
What input voltage range does the LM3501TL-21 require for normal operation?
The LM3501TL-21 accepts an input voltage from approximately 2.7 V to 4.5 V, making it compatible with single-cell lithium-ion batteries that typically deliver 3.0 V to 4.2 V during discharge in portable electronic devices.
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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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