YD2576

www.DataSheet4U.com YOUDA INTEGRATED CIRCUIT YD2576 SIMPLE SWITCHER 3A STEP-DOWN VOLTAGE REGULATOR—YD2576 DESCRIPTION The YD2576 series of regulators are monolithic integrated ciruits that provide all the active functions for a step-dpwn(buck) switching egulator,capable of driving 3A load with excellent line and regulation. FEATURES *Guaranteed 3A output current *Requires only 4 external components *52kHz fixed frequency internal oscillator *High efficiency *thermal shutdown and current limit protection BLOCK DIAGRAM ：R1=2.2K,R2=6.8K. WuXi YouDa Electronics Co., Ltd Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com SHENZHEN OFFICE Tel： 86-755-83740369 Fax： 86-755-83741418 Ver 5.0 1 of 3 2006-7-10 www.DataSheet4U.com YOUDA INTEGRATED CIRCUIT YD2576 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Power Dissipation Operating Temperature Storage Temperature (Tamb=25℃) VALUE 45 15 -25 to +75 -65 to +150 UNIT V W ℃ ℃ SYMBOL Vcc PD Topr Tstg ELECTRICAL CHARACTERISTICS Parameter Output Voltage Output Voltage Efficiency Osillator Frequency Symbol Vout Vout η Fosc (Vcc=12V,Tamb=25℃,Unless otherwise specified) Min. 4.9 4.8 4.75 Typ. 5 5 5 77 52 47 42 1.5 94 98 5.8 0.8 6 5 6.9 7.5 2 20 9 11 50 200 58 63 1.8 2 Max. 5.1 5.2 5.25 Unit V V V ％ kHz kHz kHz V V ％ A A mA mA mA mA uA Test Condition Iload=0.5A 0.5A≦Iload≦3A 8V≦Vin≦40V Iload=3A Tj=25℃ Tj=0t...