LTC3490 - Single Cell 350mA LED Driver

The LTC3490 provides a constant current drive for 1W LED applications. It is a high efficiency boost converter that operates from 1 or 2 NiMH or alkaline cells and generates 350mA of constant current with up to 4V of compliance. It contains a 100m Ohm NFET Switch and a 130m Ohm PFET synchronous Rectifier The fixed switching frequency is internally set to 1.3MHz. The LTC3490 limits the output voltage to 4.7V if the output load is disconnected. It also features an Analog dimming capability that reduces the drive current proportional to the CTRL/SHDN pin voltage. A low-battery Logic output signals when the battery has dropped below 1V/cell. An undervoltage lockout circuit shuts down the LTC3490 when the battery voltage drops below 0.85V/cell. The feedback loop is internally compensated to minimize component count.
By Linear Technology Corporation
LTC3490 's PackagesLTC3490 's pdf datasheet
LTC3490EDD DFN
LTC3490EDD-PBF DFN
LTC3490EDD-TR DFN
LTC3490EDD-TRPBF DFN
LTC3490ES8 SOIC
LTC3490ES8-PBF SOIC
LTC3490ES8-TR SOIC
LTC3490ES8-TRPBF SOIC




LTC3490 Pinout, Pinouts
LTC3490 pinout,Pin out
This is one package pinout of LTC3490,If you need more pinouts please download LTC3490's pdf datasheet.

LTC3490 Application circuits
LTC3490 circuits
This is one application circuit of LTC3490,If you need more circuits,please download LTC3490's pdf datasheet.


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