Datasheet for LT3478EFE-1#PBF:
- Manufacturer Part Number : LT3478EFE-1#PBF
- Manufacturer : AD
- Description : 4.5A Monolithic LED Drivers with True Color PWM Dimming IC
- Series : LT3478
- Reference Price : USD 2.88
- Our Price : We have a better price, contact us by email
- Product Type : LED Driver IC
- Function : Step-Down (Buck) LED Drivers
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 16-Lead TSSOP w/ EP
- Pins : 16
- MFG Package Case : 05-08-1663 (BC)
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 95
- Working Temperature : -40 to 125C
- Other Part Number : LT3478EFE-1#PBF
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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The LT3478/LT3478-1 are 4.5A step-up DC/DC converters designed to drive LEDs with a constant current over a wide programmable range. Series connection of the LEDs provides identical LED currents for uniform brightness without the need for ballast resistors and expensive factory calibration.
The LT3478-1 reduces external component count and cost by integrating the LED current sense resistor. The LT3478 uses an external sense resistor to extend the maximum programmable LED current beyond 1A and also to achieve greater accuracy when programming low LED currents. Operating frequency can be set with an external resistor from 200kHz up to 2.25MHz. Unique circuitry allows a PWM dimming range up to 3000:1 while maintaining constant LED color. The LT3478/LT3478-1 are ideal for high power LED driver applications such as automotive TFT LCD backlights, courtesy lighting and heads-up displays. One of two CTRL pins can be used to program maximum LED current. The other CTRL pin can be used to program a reduction in maximum LED current vs temperature to maximize LED usage and improve reliability.
Additional features include inrush current protection, programmable open LED protection and programmable soft-start. Each part is available in a 16-pin thermally enhanced TSSOP Package.
Applications
- High Power LED Driver
- Automotive Lighting
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
