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AP3019A Scheda tecnica (PDF) - BCD Semiconductor Manufacturing Limited

AP3019A Datasheet PDF - BCD Semiconductor Manufacturing Limited
Il numero della parte AP3019A
Scarica  AP3019A Scarica

Grandezza file   619.82 Kbytes
Page   15 Pages
Produttore elettronici  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Homepage  http://www.bcdsemi.com
Logo BCDSEMI - BCD Semiconductor Manufacturing Limited
Spiegazioni elettronici WHITE LED STEP-UP CONVERTER

AP3019A Datasheet (PDF)

Go To PDF Page Scarica Scheda tecnica
AP3019A Datasheet PDF - BCD Semiconductor Manufacturing Limited

Il numero della parte AP3019A
Scarica  AP3019A Click to download

Grandezza file   619.82 Kbytes
Page   15 Pages
Produttore elettronici  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Homepage  http://www.bcdsemi.com
Logo BCDSEMI - BCD Semiconductor Manufacturing Limited
Spiegazioni elettronici WHITE LED STEP-UP CONVERTER

AP3019A Scheda tecnica (HTML) - BCD Semiconductor Manufacturing Limited

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AP3019A Dettagli del prodotto

General Description
The AP3019A is an inductor-based DC/DC converter designed to drive up to eight white LEDs in series for backlight. Only one feedback resistor is needed to control the LED current and obtain required brightness.
A constant frequency 1.2MHz PWM control scheme is employed in this IC, which means tiny external components can be used. Specifically, 1mm tall inductor and 0.22µF output capacitor for a typical application is sufficient. Additionally, the Schottky diode in boost circuit is integrated on this chip. AP3019A also provides a disable pin to ease its use for different systems.
The output over-voltage protection is implemented in AP3019A. When any LED is broken or in other abnormal conditions, the output voltage will be clamped.
The AP3019A is available in standard SOT-23-6 and TSOT-23-6 packages.

Features
• Inherently Uniform LED Current
• High Efficiency up to 84%
• No Need for External Schottky Diode
• Output Over-voltage Protection (OVP)
• Fixed 1.2MHz Switching Frequency
• Uses Tiny 1mm Tall Inductor
• Requires Only 0.22µF Output Capacitor

Applications
• Cellular Phones
• Digital Cameras
• LCD modules
• GPS Receivers
• PDAs, Handheld Computers




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