ap1521wa Diodes, Inc., ap1521wa Datasheet
ap1521wa
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ap1521wa Summary of contents
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Not Recommended for New Design White LED Step-Up Converter Features - Inherently Matched LED Current - Drives Up to Four LEDs from a 3.2V Supply - Drives Up to Six LEDs from a 5V Supply - High Efficiency: 84% Typical ...
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Not Recommended for New Design White LED Step-Up Converter Block Diagram REF 5 310mV IN 1.25V 4 Shutdown SHDN Absolute Maximum Ratings Symbol V VIN Pin Voltage Voltage SW V ...
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Not Recommended for New Design White LED Step-Up Converter Electrical Characteristics Symbol Parameter V Minimum Operation Voltage IN V Maximum Operation Voltage IN V Feedback Pin Voltage FB I Feedback Pin Bias Current FB Supply Current F Switching frequency SW ...
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Not Recommended for New Design White LED Step-Up Converter Applications Information Capacitor Selection The small size of ceramic capacitors makes them ideal for AP1521 applications. X5R and X7R types are recommended because they retain their capacitance over wider voltage and ...
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Not Recommended for New Design White LED Step-Up Converter Applications Information (Continued) 2. Using a DC Voltage For some applications, the preferred method of brightness control is a variable DC voltage to adjust the LED current. The dimming control using ...
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Not Recommended for New Design White LED Step-Up Converter Typical Performance Characteristics Li-lon to Two White LEDs L 22uH 1uF Dimming AP1521 SHDN FB GND C : TAIYO YUDEN JMK107BJ105 ...
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Not Recommended for New Design White LED Step-Up Converter Typical Performance Characteristics (Continued) Li-lon to Five White LEDs L 22uH 1uF Dimming AP1521 SHDN FB GND C : TAIYO YUDEN ...
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Not Recommended for New Design White LED Step-Up Converter Marking Information Identification code (See Appendix Package Information Package Type: SOT23- With Plating ...