LT3491EDC#TRMPBF Step-Up (Boost) LED Drivers by Analog Devices

Status: Production
Series: LT3491
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LT3491 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 a 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. Few external components are needed: open-LED protection and the Schottky diode are all contained inside the tiny SC70 package. With such a high level of integration, the LT3491 provides a high efficiency LED driver solution in the smallest of spaces.

Where to Buy

Prices starting from US$2.05

Distributor Stock
Logo for Analog Devices
Analog Devices
from US$2.25
778
in stock
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Newark Electronics
from US$3.09
488
in stock
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element14
from US$2.22
488
in stock
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Farnell
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488
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Richardson RFPD
from US$2.05
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Features

Drives Up to Six White LEDs from a 3V Supply
High Side Sense Allows “One Wire Current Source”
Internal Schottky Diode
One Pin Dimming and Shutdown
27V Open LED Protection
2.3MHz Switching Frequency
±5% Reference Accuracy
VIN Range: 2.5V to 12V
Requires Only 1µF Output Capacitor
Wide 300:1 True Color PWMTM Dimming Range
8-Lead SC70 Package
Low Profile 6-Lead DFN Package (2mm × 2mm × 0.75mm)

Alternative Descriptions

White LED Drvr in SC70 w/ Int | Analog Devices
Led Driver, Boost, -40 To 85Deg C | Newark Electronics
LED DRIVER, BOOST, -40 TO 85DEG C | element14
LED DRIVER IC | Richardson RFPD


LT3491EDC#TRMPBF Semiconductors - ICs by Linear Technology

IC WHITE LED DRIVER 6DFN

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Device Topology Boost (Step Up)
Input Voltage Min 2.5V
Input Voltage Max 12V
Output Voltage Max 27V
Output Current Max 200mA
Switching Frequency 2.3MHz
No. of Outputs 1Outputs
IC Mounting SMD
Driver Case Style DFN
No. of Pins 6Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 3491
Device Type LED
Dimming Control Type PWM
Input Voltage 2.5V to 12V
LED Display Type Discrete LED
LED Driver Application Cell Phones PDA
Operating Temperature Range -40°C to +85°C
Output Current 200mA
Output Voltage 27V
Termination Type Surface Mount Device
Topology Boost (Step Up)

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LT3491EDC#TRMPBF?

Additional datasheets, footprints and schematics for LT3491EDC#TRMPBF are listed on our Part Details page. You can also find images and similar parts to LT3491EDC#TRMPBF on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for LT3491EDC#TRMPBF on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LT3491EDC#TRMPBF price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does LT3491EDC#TRMPBF fall under?

The LT3491EDC#TRMPBF is listed under Step-Up (Boost) LED Drivers.

Can I view similar or alternative parts?

You can view similar parts to LT3491EDC#TRMPBF when available in the Step-Up (Boost) LED Drivers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the LT3491EDC#TRMPBF you can contact the distributor directly for product support, shipping queries etc.

Is the LT3491EDC#TRMPBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for LT3491EDC#TRMPBF have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14, Farnell and Richardson RFPD have stock available or on a lead time for LT3491EDC#TRMPBF.

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