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A8434 Folha de dados(PDF) 3 Page - Allegro MicroSystems |
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A8434 Folha de dados(HTML) 3 Page - Allegro MicroSystems |
3 / 11 page 6-Channel High Efficiency Charge Pump White LED Driver A8434 3 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com Name Number Function C1– 13 Negative terminal of capacitor C1. Connect capacitor C1 between C1+ and C1–. C1+ 16 Positive terminal of capacitor C1. C2– 15 Negative terminal of capacitor C2 C2+ 1 Positive terminal of capacitor C2. Connect capacitor C2 between C2+ and C2–. ENS 4 Enable and dimming control input for sub display WLED group. ENM 5 Enable and dimming control input for main display WLED group. EP – Exposed metal pad on bottom side. Connect this to ground plane for better thermal performance. GND 12 Ground. ISET 3 Connect RSET resistor to ground to set desired constant current through main and sub WLEDs. ILED(max) = 220 x 0.6 V/RSET LED1, LED2, LED3, and LED4 8, 9, 10, and 11 Current sink for main display WLEDs. If not used, connect to VOUT, but do not leave open. If left open, the IC works in 2 × mode. LED5 and LED6 6 and 7 Current sink for sub display WLEDs. If not used, connect to VOUT, but do not leave open. If left open, the IC works in 2 × mode. VIN 14 Power supply voltage input. VOUT 2 Charge pump output voltage for display backlight and flash/torch LED anodes. Connect a 1 μF capacitor, COUT, between VOUT and GND (see figure 2). 12 11 10 9 GND LED1 EP LED2 LED3 1 2 3 4 C2+ VOUT ISET ENS Terminal List Table ES Package (Top View) Pin-out Diagram |
Nº de peça semelhante - A8434 |
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Descrição semelhante - A8434 |
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