me6118低压差线性稳压器.doc

ME6118 800mA Adjustable Voltage High Speed LDO Regulators ME6118 Series General Description Features The ME6118 series are highly accurate, low noise, ? Output Current in Excess of 800mA LDO Voltage Regulators that are capable of ? Dropout Voltage:115mV@ IOUT =100mA providing an output current that is in excess of （ME6118A18） 800mA with a maximum dropout voltage of 1.0V at ? Operating Voltage Range: 2.5V～18V 800mA（ME6118A18）.This series contains four ? Highly Accuracy: ±2％ fixed output voltages of 1.2V,1.8V,2.5V and 3.3V ? Adjustable Output Voltage Option that have no minimum load requirement to ? Standby Current: 52uA（TYP.） maintain regulation. On chip trimming adjusts the ? High Ripple Rejection: 70dB@1KHz（ME6118A18） reference/output voltage to within ±2% accuracy. ? Line Regulation: 2mV（TYP.） Internal protection features consist of output ? Temperature Stability≤0.5% current limiting, safe operating area compensation, ? Thermal Shutdown Protection：160℃ and thermal shutdown. The ME6118series can ? Packages:SOT223 operate with up to 18V input. Devices are available in SOT223. Typical Application ? Consumer and Industrial Equipment Point of Selection Guide Regulation ? Switching Power Supply Post Regulation ? Hard Drive Controllers ? Battery Chargers Typical Application Circuit V04 Page 1 of 13 ME6118 Pin Configuration SOT223 Pin Assignment ME6118AXX Pin Number SOT223 Pin Name Functions 1 GND Ground 2 VOUT Output 3 VIN Power Input Absolute Maximum Ratings Parameter Symbol Ratings Units Input Voltage VIN 18 V Output Current IOUT 1.1 A Output Voltage VOUT Vss-0.3～VIN +0.3 V Power Dissipation SOT223 PD 750 mW Operating Temperature Range TOPR －40～＋125 ℃ Storage Temperature Range TSTG －40～＋150 ℃ Lead Temperature 260℃，4sec V04 Page 2 of 13 ME6118 Block Diagram Electrical Characteristics ME6118A12 (VIN= VOUT+1.3V，CIN=CL=10uF，Ta=25 OC, unless otherwise noted) Parameter Symbol Conditions Min. Typ. Max. Units Output Voltage VOUT(E) (Note 2) IOUT=10mA, VIN= VOUT+1.3V X 0.98