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MIC4802YME;中文规格书,Datasheet资料MIC4802YME;中文规格书,Datasheet资料
MIC4802
High Efficiency 800mA Single Channel
Linear WLED Driver with
Ultra Fast PWM™ Control
General Description Features
The MIC4802 is a high efficiency White LED (WLED) • High Efficiency (no Voltage Boost losses)
driver designed to drive a single LED up to 800mA. The • Ultra Fast PWM™ control (200Hz to 500kHz)
MIC4802 constant current driver is designed to drive high
• Input voltage range: 3.0V to 5.5V
power LED’s in various lighting applications. The MIC4802
provides the highest possible efficiency as this architecture • Dropout of 280mV at 800mA
has no switching losses present in traditional charge • Programmable LED current with external resistor
pumps or inductive boost circuits. It features a typical • Current accuracy of ±1% typical
dropout of 280mV at 800mA. This allows the LEDs to be
driven directly from the voltage source eliminating Applications
switching noise/losses present with the use of boost
circuitry. The high accuracy (±1% Typical) current • Bill board displays
regulated WLED channel ensures uniform display • Marquee displays
illumination under all conditions. The brightness is • Instrument displays
controlled through an Ultra Fast PWM™ Control interface
operating down to less than 1% duty cycle. • Architectural lighting
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