深圳市中立信电子科技有限公司

LD1117S50CTR

低压差稳压器 5.0V 0.8A Positive Adjustable and fixed low drop positive voltage regulator

Features LD1117S50CTR

• 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.)

Description LD1117S50CTR

The LD1117S50CTR 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.