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ANALOG DEVICES LT3491EDC#TRMPBF
LED Driver, DC / DC, Boost, 2.3 MHz, DFN-EP-6, 2.5 to 12 V, -40 to 85°C, SMD
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LT3491EDC#TRMPBF
- Order Code:
- 4018359
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- Technical Datasheet:
- LT3491EDC#TRMPBF Datasheet
- ECAD / MCAD
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Product Information
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- :
- Boost
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- -
- :
- 2.5V
- :
- 12V
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- 27V
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- -
- :
- 2.3MHz
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- Surface Mount
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- DFN-EP
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- 6Pins
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- -40°C
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- 85°C
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- -
- :
- -
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- MSL 1 - Unlimited
Technical Documents (1)
Product Overview
LT®3491 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 driver 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. Typical applications are cellular phones, PDAs, handheld computers, digital cameras, MP3 players, GPS receivers.
- Drives up to six white LEDs from a 3V supply, internal schottky diode
- One pin dimming and shutdown, 27V open LED protection
- Requires only 1µF output capacitor, wide 300:1 true colour PWM™ dimming range
- Minimum operating voltage is 2.5V (TA=25°C, VIN=3V, VCTRL=3V)
- Supply current is 4mA (VCAP=16V, VLED=15V, CTRL=3V)
- Switching frequency range from 1.8 to 2.8MHz
- CTRL pin bias current is 100nA typical
- 6-lead plastic DFN package
- Operating temperature range from –40°C to 85°C
Footnotes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
Packaging type
Cut Tape
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182 deliver in 3-4 business days from our UK warehouse :(UK stock) Order before 17:00 Mon-Fri (excluding National Holidays)
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Extra stock is available upon order to the Supplier Lead Time which is approximately 6/16/25
182 deliver in 3-4 business days from our UK warehouse
Due to market conditions delivery times are for general guidance only and may be subject to change at short notice
¥859.06
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¥944.97
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| 1+ | ¥859.06 (¥944.97) | ( ) |
| 10+ | ¥506.31 (¥556.94) | ( ) |
| 25+ | ¥484.69 (¥533.16) | ( ) |
| 100+ | ¥384.04 (¥422.44) | ( ) |
| 250+ | ¥354.15 (¥389.57) | ( ) |
| 500+ | ¥344.85 (¥379.34) | ( ) |
| 2500+ | ¥323.85 (¥356.24) | ( ) |
| 5000+ | ¥313.35 (¥344.69) | ( ) |
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