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PT6937 Arkusz danych (PDF) - Princeton Technology Corp

PT6937 Datasheet PDF - Princeton Technology Corp
Numer części PT6937
Pobierz  PT6937 Pobierz

Rozmiar pliku   230.72 Kbytes
Page   15 Pages
Producent  PTC [Princeton Technology Corp]
Strona internetowa  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp
Szczegółowy opis White LED Step-Up Converter

PT6937 Datasheet (PDF)

Go To PDF Page Pobierz Arkusz danych
PT6937 Datasheet PDF - Princeton Technology Corp

Numer części PT6937
Pobierz  PT6937 Click to download

Rozmiar pliku   230.72 Kbytes
Page   15 Pages
Producent  PTC [Princeton Technology Corp]
Strona internetowa  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp
Szczegółowy opis White LED Step-Up Converter

PT6937 Arkusz danych (HTML) - Princeton Technology Corp

Back Button PT6937 Datasheet HTML 1Page - Princeton Technology Corp PT6937 Datasheet HTML 2Page - Princeton Technology Corp PT6937 Datasheet HTML 3Page - Princeton Technology Corp PT6937 Datasheet HTML 4Page - Princeton Technology Corp PT6937 Datasheet HTML 5Page - Princeton Technology Corp PT6937 Datasheet HTML 6Page - Princeton Technology Corp PT6937 Datasheet HTML 7Page - Princeton Technology Corp PT6937 Datasheet HTML 8Page - Princeton Technology Corp PT6937 Datasheet HTML 9Page - Princeton Technology Corp PT6937 Datasheet HTML 10Page - Princeton Technology Corp Next Button 

PT6937 Szczegóły Produktu

DESCRIPTION
The PT6937 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or four LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The PT6937 switches at 1.2MHz, allowing the use of tiny external components. The output capacitor can be as small as 0.22µF, saving space and cost versus alternative solutions. A low 95mV feedback voltage minimizes power loss in the current setting resistor for better efficiency. The PT6937 is available in a low profile SOT package.

FEATURES
• High efficiency: 85% Typical
• Drives up to four LEDs from a 3.3V supply
• Drives up to ten LEDs from a 5V supply
• Fast 1.2MHz switching frequency
• Uses tiny 22µH inductors
• Requires only 0.22µF output capacitor
• Low profile SOT package

APPLICATIONS
• Cellular phones
• PDAs, Handheld computers
• Digital cameras
• MP3 players
• GPS receivers




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