LD1117S25CTR

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, 1.8V, 2.5 V, 3.3V, 5.0 V

● Adjustable version availability (VREF= 1.25 V)

● Internal current and thermal limit

● Availablein士1 % (at25 °C) and2 % in full temperature range

● Supply voltage rejection: 75 dB (typ.)

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, withint 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.

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