[3DMakerWorld] STMicroelectronics Low Drop Voltage Regulator, 3.3V

Description

Key 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: 3.3 V
Adjustable version availability (VREF= 1.25 V)
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: TO-220. 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.
Item Specifics
1 - TO-220 Voltage Regulator
Internal current and thermal limit
Available in ± 1 % (at 25 degC) and 2 % in full temperature range
Supply voltage rejection: 75 dB (typ.)