Typical Application for LT1937 White LED Step-Up Converter
Reference Design using part LT1937 by Analog Devices
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Associated Documents
For End Products
- Cellular Phone
- Digital Camera
- GPS Receivers
- MP3 Player
- Personal Digital Assistant
- Portable Computers
Description
- Typical Application for LT1937 is a step-up DC-DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or four 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 LT1937 switches at 1.2MHz, allowing the use of tiny external components
Key Features
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Input Voltage3 to 5 V
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Output Current0.015 A
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Number of Derived Elements3
Featured Parts (7)
| Part Number | Manufacturer | Type | Description | |||
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LT1937ES5#TRMPBF | Analog Devices | LED Drivers | LED Driver 6 Segment 2500uA Supply Current 5-Pin TSOT-23 T/R | Buy | |
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LT1937ES5#TRPBF | Analog Devices | LED Drivers | LED Driver 6 Segment 2500uA Supply Current 5-Pin TSOT-23 T/R | Buy | |
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LT1937ES5#TRM | Analog Devices | LED Drivers | LED Driver 6 Segment 2500uA Supply Current 5-Pin TSOT-23 T/R | Buy | |
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LT1937ESC6#TRPBF | Analog Devices | LED Drivers | LED Driver 6 Segment 2500uA Supply Current 6-Pin SC-70 T/R | Buy | |
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LT1937ES5#PBF | Analog Devices | LED Drivers | LED Driver 6 Segment 2500uA Supply Current 5-Pin TSOT-23 T/R | Buy | |
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LT1937ESC6#TRMPBF | Analog Devices | LED Drivers | LED Driver 6 Segment 2500uA Supply Current 6-Pin SC-70 T/R | Buy | |
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LT1937ES5 | Analog Devices | LED Drivers | LED Driver 6 Segment 2500uA Supply Current 5-Pin TSOT-23 | Buy | |