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TK11851L-G

TOKO

White LED driver IC

www.DataSheet4U.com POWER&RF White LED driver IC LEDドライバIC TK11851L-G DESCRIPTION The TK11851L-G is a pulse skipping ...


TOKO

TK11851L-G

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Description
www.DataSheet4U.com POWER&RF White LED driver IC LEDドライバIC TK11851L-G DESCRIPTION The TK11851L-G is a pulse skipping step-up DC-DC converter IC designed for White LED driver applications, suitable for 2 to 4 LEDs, with the following built in : a high current switching transistor (400mA peak),an inductor current limit detector, a low voltage reference (Vref=0.515V),a high speed oscillator, an error comparator, a zener diode for opencircuit protection (OVP) and an ON/OFF control(En pin). The IC works with a wide operating supply range (2.3~10V). The white LEDs are connected in series and driven at a constant current resulting in uniform brightness. TK11851L-Gは 2~4 にな LED のパルス スキップ DC-DC コンバータ IC です。スイ ッチングトランジスタ(400mAピーク)、インダクタ 、、、エラーコンパレー タ、オープン(OVP)ツェナーダイオード、On/offコン ト ロ ー ル (En ピ ン ) を し て い ま す 。 2.3~10.0Vのでします。 LED、で、ムラがなく、 でします。 FEATURES „ Wide Operating Voltage: 2.3 to 10.0V „ Built-in Switching Transistor „ Active High On/Off Control: En pin „ Available Intensity Control Using En Pin with PWM Signal (Pulse Width Modulation) „ Operates with Toko D31FB Miniature Coil (Current Limited by Input Current Sensor) „ Few External Components „ OVP (Open-circuit Voltage Protection) „ Small Package: SOT23L-8 „ い: VOP=2.3 to 10.0V „ スイッチングトランジスタ „ アクティブハイOn/Offコントロール: Enピン „ PWM(Enピン)による „ コイル „ ないけ „ オープン „ パッケージ: SOT23L-8 APPLICATIONS „ The White LED Driving Systems: 2 to 4 For Back-lighting and Front-lighting, Flashlights etc. Mobile Communication Systems: Cellular P...




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