ST LD1117S33CTR

正15V800mA

Overview

The LD1117S33CTR 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 LD1117S33CTR 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 (V_REF = 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.)

Applications

• Negative supply

• Circuit for increasing output voltage

• Voltage regulator with reference

• Battery backed-up regulated supply

• Post-regulated dual supply

• 5G Communication

• Electrification of automobile

• Industrial 4.0