LD1117 Adjustable and fixed low drop positive voltage regulator
■ Description
● The 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, 3.3 V and 5.0 V. 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 μF minimum capacitor is needed for stability. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1 % at 25 °C. 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.
■ Features
● Low dropout voltage (1 V typ.)
● 2.85 V device performances are suitable for SCSI-2 active termination
● Output current up to 800 mA
● Fixed output voltage of: 1.2 V, 1.8 V, 2.5 V,
3.3 V, 5.0 V
● Adjustable version availability (Vref = 1-25 V)
● Internal current and thermal limit
● Available in ± 1 % (at 25 °C) and 2 % in full temperature range
● Supply voltage rejection: 75 dB (typ.)
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LD1117S12TR 、 LD1117S12CTR 、 LD1117S18TR 、 LD1117S18CTR 、 LD1117S25TR 、 LD1117S25CTR 、 LD1117S33TR 、 LD1117S33CTR 、 LD1117S50TR 、 LD1117S50CTR 、 LD1117STR 、 LD1117SC-R 、 LD1117DT12TR 、 LD1117DT12CTR 、 LD1117DT18TR 、 LD1117DT18CTR 、 LD1117DT25TR 、 LD1117DT25CTR 、 LD1117DT33TR 、 LD1117DT33CTR 、 LD1117DT50TR 、 LD1117DT50CTR 、 LD1117DTTR 、 LD1117DTC-R 、 LD1117V18 、 LD1117V33 、 LD1117V33C 、 LD1117V50 、 LD1117V50C 、 LD1117V 、 LD1117V33-DG 、 LD1117V33C-DG 、 LD1117V50-DG 、 LD1117V-DG 、 LD1117D33CTR 、 LD1117D33TR 、 LD1117 、 LD1117xx |
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Datasheet |
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Please see the document for details |
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SOT-223;SO-8;DPAK;TO-220;TO220FM |
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English Chinese Chinese and English Japanese |
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12-Jun-2019 |
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Rev 34 |
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2.5 MB |
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