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W_SERIES Scheda tecnica(PDF) 7 Page - Copal Electronics |
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W_SERIES Scheda tecnica(HTML) 7 Page - Copal Electronics |
7 / 7 page BASIC CIRCUITRY METHOD AND FEATURES WHITE LED DRIVERS ■ Example of application in circuitry W-6137 W-5200-5 W-5626 W-6238 Driver to Five (Max.) High-Brightness white LEDs Driver to Six High-Brightness White LEDs (I2C control) Driver to Ten (Max.) High-Brightness white LEDs L: Murata LQH32CN220 VIN VIN SW FB GND SHDN Vfb = 300 mV 20 mA R1 15 Ω OFF ON 2.2 V to 5.5 V C1 C2 L D VOUT 22 μH 1 μF 0.22 μF D: Central CMDSH2-3 (rated 30V) W-6137 W-5626 VIN VIN VOUT EN SDA SCL GND LEDA1 pair A pair B pair C COUT 20 mA LEDA2 LEDB1 LEDB2 LEDC1 LEDC2 C1– C1+ C2– C2+ 3 V to 5.5 V Cin ENABLE I2C INTERFACE 1 μF1μF 1 μF1μF VIN W-6238 VIN L D VOUT R1 15 20 mA (300mV) 4.7F C1 0. 22 F C2 FB SHDN SW GND ON 47 H OFF L: Sumida CDC5D23B-470 D: Central CMDSH05-4 C2: Taiyo Yuden UMK212BJ224 (rated 50V) 5 3 1 2 IN OUT SGND 100 100 100 100 W-5200 5 Apply PWM Waveform for Adjustable Brightness Control 3 V to 4.4 V i ion Battery t Drive up to 5 LEDs 100 + 1 F 1 F 46 C C+ 1 F SHDN ON OFF VSHDN |
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