DescriptionThe LD1117 is a low drop voltage regulator able to provide up to 800 mA of output current, available even in adjustable version (VREF = 1.25 V). Concerning fixed versions, are offered the following output voltages: 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V and 5.0 V. The 2.85 V type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, DPAK, SO-8 and TO-220.The SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect.High efficiency is assured by NPN pass transistor. In fact in this case, unlike than PNP one, the quiescent current flows mostly into the load. Only a very common 10 F minimum capacitor is needed for stability. On chip trimming allows the tolerance, within 1% at 25C. The adjustable LD1117 is pin to pin compatible with the other standard. Adjustable voltage regulators maintaining the better performances in terms of drop and tolerance.DPAK SO-8TO-220SOT-223Table 1.Device s Features Low dropout voltage (1 V typ.)2.85 V device performances are suitable for SCSI-2 active terminationOutput current up to 800 mAFixed output voltage of: 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V, 5.0 VAdjustable version availability (Vref = 1.25 V)Internal current and thermal limitAvailable in 1% (at 25 C) and 2% in full temperature rangeSupply voltage rejection: 75 dB (typ.)DescriptionThe LD1117 is a low drop voltage regulator able to provide up to 800 mA of output current, available even in adjustable version (VREF = 1.25 V). Concerning fixed versions, are offered the following output voltages: 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V and 5.0 V. The 2.85 V type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, DPAK, SO-8 and TO-220.The SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect.High efficiency is assured by NPN pass transistor. In fact in this case, unlike than PNP o March 2009Rev 251/4141 LD1117xxLow drop fixed