DC2176A, Demo Board Using LT3909EDD, 7 to 36V Vin, VLED up to 35V @ 50mA, 2-String Boost LED Driver
使用 Analog Devices 的 LT3909EDD#PBF 的参考设计
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依据最终产品
- Displays
- GPS
- Instrument Cluster
- Personal Digital Assistant
- Portable Computers
说明
- DC2176A, Demonstration Circuit features the LT3909, a 2-string + 50mA, 2MHz step-up LED driver with 1.8% current matching. The LT3909 precisely regulates two LED strings for equal current, supports LED dimming that reduces brightness down to a 1/40,000 ratio, protects against faults and also reports faults. The LT3909 consists of a step-up converter with a fixed 2MHz switching frequency and current sources for the LED strings. The maximum current in each LED string is 40mA. The ISET resistor can be changed to 20.0k Ohm to program the string current to 50mA
主要特色
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Input Voltage7 to 36 V
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Output Voltage35 V
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Output Current0.05 A
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Number of Derived Elements2
Featured Parts (1)
| 零件编号 | 供应商 | 类别 | 说明 | |||
|---|---|---|---|---|---|---|
|
LT3909EDD#PBF | Analog Devices | LED Drivers | LED Driver 20 Segment 700uA Supply Current 12-Pin DFN EP Tube | 买入 | |