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ANALOG DEVICES LTC3490EDD#PBF
LED Driver, DC / DC, Boost, 1.3 MHz, DFN-EP-8, 1 to 3.2 V, -40 to 85°C, SMD
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC3490EDD#PBF
- Order Code:
- 4018465
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- Technical Datasheet:
- LTC3490EDD#PBF Datasheet
- ECAD / MCAD
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Product Information
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- :
- Boost
- :
- -
- :
- 1V
- :
- 3.2V
- :
- 4V
- :
- 350mA
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- 1.3MHz
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- Surface Mount
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- DFN-EP
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- 8Pins
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- -40°C
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- 85°C
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- -
- :
- -
- :
- MSL 1 - Unlimited
Technical Documents (1)
Product Overview
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 100mohm NFET switch and a 130mohm 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 analogue 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. Applications includes portable lighting and rechargeable flashlights.
- 1- or 2-cell NiMH or alkaline input
- Synchronous rectification up to 90% efficiency
- 1.3MHz fixed frequency operation, low quiescent current of
1mA - Very low shutdown current of
50µA - Open LED output limited to 4.7V
- VIN range from 1V to 3.2V, dimming control
- Undervoltage lockout to protect batteries
- Input supply range from 1V to 3.2V
- Typical switching frequency of 1.3 MHz
- 8 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
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121 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 4/7/25
121 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
¥887.21
(
¥975.93
Inc. JCT)
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| Quantity | Price (Incl JCT) | Your Price (Incl JCT) |
|---|---|---|
| 1+ | ¥887.21 (¥975.93) | ( ) |
| 10+ | ¥608.19 (¥669.01) | ( ) |
| 25+ | ¥536.09 (¥589.70) | ( ) |
| 121+ | ¥531.81 (¥584.99) | ( ) |
| 363+ | ¥527.53 (¥580.28) | ( ) |
| 605+ | ¥527.40 (¥580.14) | ( ) |
| 1089+ | ¥527.33 (¥580.06) | ( ) |
| Quantity | Price (Incl JCT) | Your Price (Incl JCT) |
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