ISP278R12 Datasheet (data sheet) PDF





ISP278R12 Datasheet, Low Dropout Voltage Regulators

ISP278R12   ISP278R12  

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ISP278R12 Low Dropout Voltage Regulators DESCRIPTION The ISP278R12 is a low-dro pout voltage regulator suitable for var ious electronic equipments. Dropout vol tage of ISP278R12 Series is below 0.5V in full rated current (1.6A). Cause the series have been designed for high cur rent loads, so they are also used in lo wer current, extremely low dropout-crit ical systems (in which their tiny dropo ut voltage and ground current values ar e important attributes). FEATURES ■ I OUT=1.6A ; VOUT=12V ■ TO-220 Full Mol d Package (4 pin) ■ Internal over cur rent protection, internal thermal shutd own ■ Internal overvoltage protection , internal short-circuit protecti

ISP278R12 Datasheet, Low Dropout Voltage Regulators

ISP278R12   ISP278R12  
on ■ Output disable function Typical A pplication Circuit Vin 1 VIN CIN 0.3 3uF 4 Vdis Disable Signal Vo 2 3 GND Cout 47uF LOAD High or Open : Output ON Low : Output OFF www.apsemi.com R EV. 02 1 ISP278R12 Maximum Ratings Ch aracteristic Input Voltage Control Inpu t Voltage Power Dissipation Junction Te mperature Operating Temperature Range S torage Temperature Range Thermal shutdo wn Temperature Internal Block Diagram Symbol VI Rating 35 Units V VCT 35 Pd1(No Heat sink) 1.5 Pd2(With Heat s ink) 15 TJ Topr Tstg Ttsd 150 -20 ~ 80 -50 ~ 150 150 V W W OC °C °C °C www.apsemi.com REV. 02 2 Package Inf ormation ISP278R12 Package (TO-220F-4 L) Pin Info. 1.Vin 2.Vout 3.GND 4.Vdis Ordering Information Part No ISP278R 12 Package Packing TO-220F-4L Tube Fi nish Sn Halogen Free Packing Unit 5,0 00 Remark www.apsemi.com REV. 02 3 ISP278R12 Electrical Characteristics Operating Conditions: VI =14V, Io = 1A, VCT(High)=2.7V, Ta = 25°C, unless oth erwise specified Parameter Symbol Te st Conditions Min. Typ. Max. Units Ou tput Voltage Vo ISP278R12 VI=13V~16V 1 1.7 12.0 12.3 V Line Regulation △VO (△VI) Note, IO=1.0A Load Regulation △VO(△IL) 5mA≤IO≤2.0A Quiescen t Current IQC IO=0mA Ripple Rejection Ratio RR VI = 18V, IO=50mA f=120Hz Dropout Voltage VDROP IO=1.0A








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