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تراشه MP3202DJ درایور جریان ثابت LED

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4746
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توضیحات

Part Number: MP3202-DJ

>Product Category:     LED Lighting Drivers    
>Manufacturer:     Monolithic Power Systems (MPS)    
>RoHS:     RoHS Compliant Details    
>Input Voltage:     2.5 V to 6 V    
>Maximum Operating Temperature:     + 85 C    
>Mounting Style:     SMD/SMT    
>Package/Case:     TSOT-23-6    
>Minimum Operating Temperature:     - 40 C    
>Packaging:     Reel    
>Series:     MP3202    
>Factory Pack Quantity:     3000

DESCRIPTION
The MP3202 is a step-up converter designed for driving up to 39 white LEDs (13 strings of 3 LEDs each) from a 5V system rail. The MP3202 uses a current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low 104mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition.
The MP3202 includes under-voltage lockout, current limiting and thermal overload protection
preventing damage in the event of an output overload.
The MP3202 is available in small 6-pin TSOT23

FEATURES
• 2.5V to 6V Input Voltage Range
• On Board Power MOSFET
• Drives up to 39 White LEDs at 5V Input
• Up to 92% Efficiency
• Over 1MHz Fixed Switching Frequency
• Open Load Shutdown
• Low 104mV Feedback Voltage
• Soft-Start/PWM Dimming
• UVLO, Thermal Shutdown
• Internal 1.3A Current Limit
• Available in TSOT23-6 and QFN8 Packages
APPLICATIONS
• Cell Phones
• Handheld Computers and PDAs
• Digital Still Cameras
• Small LCD Displays

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4746
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