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LT3491EDC#TRMPBF - 

Led Driver, 1 Output, Boost (Step Up), 2.5V-12V in, 2.3MHz switch, 27V/200mA out, DFN-6

LINEAR TECHNOLOGY LT3491EDC#TRMPBF

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Manufacturer Part No:
LT3491EDC#TRMPBF
Order Code:
1715220
Technical Datasheet:
(EN)
See all Technical Docs

Product Information

:
12V
:
-40°C
:
200mA
:
1Outputs
:
DFN
:
85°C
:
6Pins
:
27V
:
2.5V
:
-
:
-
:
Boost (Step Up)
:
2.3MHz
:
Cut Tape
:
MSL 1 - Unlimited
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Product Overview

The LT3491EDC#TRMPBF is a fixed frequency step-up DC/DC Converter specifically designed to drive up to six white LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The device features unique high-side LED current sense that enables the part to function as a one wire current source, one side of the LED string can be returned to ground anywhere, allowing a simpler one wire LED connection. Traditional LED drivers use a grounded resistor to sense LED current, requiring a 2-wire connection to the LED string. The 2.3MHz switching frequency allows the use of tiny inductors and capacitors. A single pin performs both shutdown and accurate LED dimming control.
  • Internal Schottky diode
  • One pin dimming and shutdown
  • ±5% Reference accuracy
  • Requires only 1µF output capacitor
  • High-side sense allows 'one wire current source'

Applications

Consumer Electronics, Computers & Computer Peripherals, Portable Devices, Audio

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