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LINEAR TECHNOLOGY  LT3491ESC8#PBF  Led Driver, 1 Output, Boost (Step Up), 2.5V-12V in, 2.3MHz switch, SC-70-8

LINEAR TECHNOLOGY LT3491ESC8#PBF
Manufacturer Part No:
LT3491ESC8#PBF
Order Code:
2294846
Technical Datasheet:
See all Technical Docs

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

Product Overview

The LT3491ESC8#PBF 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'

Product Information

Voltage Reference Type:
Device Topology:
Boost (Step Up)
No. of Outputs:
1Outputs
Output Current:
-
Reference Voltage:
Output Voltage:
-
Initial Accuracy:
Temperature Coefficient:
Driver Case Style:
SC-70
Voltage Reference Case Style:
Input Voltage Min:
2.5V
No. of Pins:
8Pins
Input Voltage Max:
12V
Switching Frequency:
2.3MHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

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

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000012

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