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KB3361 Datasheet(PDF) 1 Page - Kingbor Technology Co |
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KB3361 Datasheet(HTML) 1 Page - Kingbor Technology Co |
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1 / 6 page  KB3361 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 ■ High Efficiency: Up to 97% ■ 75 A No Load Quiescent Current µ ■ 800mA Output Current ■ 2.5V to 6.5V Input Voltage Range ■ 1.4MHz Switching Frequency ■ No Schottky Diode Required ■ Low Dropout Operation: 100% Duty Cycle ■ 0.6V Reference Allows Low Output Voltages ■ Shutdown Mode Draws 1 µA Supply Current ■ Current Mode Operation for Excellent Line and Load Transient Response ■ Overtemperature Protected ■ Low Profile (1.3mm) SOT23-5 Package ■ Cellular Telephones ■ Personal Information Appliances ■ Wireless and DSL Modems ■ Digital Still Cameras ■ MP3 Players ■ Portable Instruments Figure 1a. High Efficiency Step-Down Converter Figure 1b. Efficiency vs Load Current OUTPUT CURRENT (mA) APPLICATIONS FEATURES DESCRIPTION TYPICAL APPLICATION VIN CIN 10 µF VIN 3.6V KB3361 RUN 3 4.7 µH 22pF 450k 100k 5 4 1 2 SW VFB GND COUT 10 µF CER VOUT 3.3V 800mA + to 6.5V 50 60 70 80 90 100 0.1 1 10 100 1000 VIN = 4.2V VIN = 5.0V VIN = 3.6V The KB3361 SwitchReg is a member of Kingbor(KB) product family. It is a 1.4MHz step- down converter with an input voltage range of 2.5V to 6.5V and output as low as 0.6V. Its low supply current, small size, and high switching frequency make the KB3361 the ideal choice for portable applications. The KB3361 is available in either a programmable version with external feedback resistors. It can deliver up to 800mA of load current while maintai- ning a low 27µA no load quiescent current. The 1.4MHz of external components while keeping switching losses low.The KB3361 feedback and control delivers excel lent load regulation and transient response with a small output inductor and capacitor. The KB3361 is designed to maintain high efficien- cy throughout the operating range and provides fast turn-on time. The KB3361 is available in a low profile (1.3mm) SOT23-5 package and is rated over the -40°C to +85°C temperature range. 75 1.4MHz 800mA High Efficiency Synchronous Step-Down Regulator in SOT23-5 The 1.4MHz switching frequency minimizes the size 2007-Aug, Rev 1.0 1 kB3361 |
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