TK11840L-G

www.DataSheet4U.com POWER&RF Step-up DC-DC converter / white LED driver IC DC-DCコンバータ / LEDドライバIC TK11840L-G DESCRIPTION The TK11840L-G is a step-up DC-DC converter that drives an external NPN power transistor using a constant frequency PWM architecture. The IC works with a wide operating supply range (1.8V to 10V) and has an adjustable output. The IC timing oscillator operating frequency is programmable and can be set up to 1MHz. It also incorporates a soft-start circuit and a short-circuit detection function of a timer-latch type. TK11840L-G は PWM のスイッチングレギュレータコン トローラです。は1.8Vから10Vです。 は 1MH ｚまでです。ソフトスタート・タイ マーラッチをしております。 FEATURES „ Operation from 1.8V to 10.0V supply „ Adjustable output voltage „ High speed adjustable OSC: up to 1MHz „ Incorporates a soft start circuit „ Incorporates a short circuit detection of a timer-latch „ Totem-pole type output in which drive current is adjustable using an switching resistor: pin 4 „ 1µA or less shutdown current „ Small package: SOT23L-8 „ „ „ „ „ „ : VOP=1.8~10.0V が: 1MHz ソフトスタート タイマーラッチ はトーテムポールでスイッチングTr.ドライブ (NPNスイッチングトランジスタ) „ 1µAのシャットダウン „ パッケージ: SOT23L-8 APPLICATIONS „ The White LED Driving Systems: 2 to 48 or more For Back-lighting and Front-lighting, Flashlights etc. Mobile Communication Systems: Cellular Phone, PHS, DSC, PDA, Computer Peripheral Equipment Battery & Dry Cell Battery Systems Portable Equipment „ Step-up DC-DC Converter (Voltage Supply) Camera, Radio, Communications Equipment etc „ VCD Bias „ LEDシステム: „ バックラ...