LT3478EFE#PBF - 

Led Driver, 1 Output, Boost, Buck, Buck-Boost, 2.8V-36V in, 2.25MHz switch, TSSOP-16

LT3478EFE#PBF - Led Driver, 1 Output, Boost, Buck, Buck-Boost, 2.8V-36V in, 2.25MHz switch, TSSOP-16

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:
Technical Datasheet:
See all Technical Docs

Product Information

Boost, Buck, Buck-Boost
MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Product Overview

The LT3478EFE#PBF is a monolithic step-up DC/DC Converter 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 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 colour. The LT3478 is ideal for high power LED driver applications. 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.
  • Integrated resistors for inductor and LED current sensing
  • Program LED current de-rating vs. temperature
  • Separate inductor supply input
  • Inrush current protection
  • Programmable soft-start
  • Open LED protection
  • Accurate shutdown/UVLO threshold with programmable hysteresis


Automotive, LED Lighting

Associated Products

Compare Selected

Related Searches


98 In stock

20 in stock for next day delivery (Liege stock)

78 in stock for next day delivery (UK stock)

see cut-off times
Check stock and lead times
More stock available week commencing 08/10/18
£6.03 £ 6.03
Price for:
Multiple: 1 Minimum: 1
Quantity Price
1 + £6.03
25 + £3.91
100 + £3.46
No longer stocked:: No Longer Manufactured::
Add to Basket
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.