Final Year Project 2 (Week 7)

Week 7

Titles of activity:

-          

•       Research and findings (LM 1117T – Voltage Regulator)

                             

      Analysis:

• The LM 1117 is a series of low dropout voltage regulators which can provide up to 1A of output current. The LM1117 is available in four fixed voltage, 1.2V, 1.8V, 3.3V and 5.0V. Additionally it is also available in adjustable version. On chip precision trimming adjusts the reference/ output voltage to within 2%. Current limit is also  trimmed to ensure specified output current and controlled short-circuit current. The LM1117 series output current and controlled short-circuit current. The LM1117 series is available in SOT-233 and TO-220 packages. A minimum of 10uF tantalum capacitor is required at the ouput to improve the transient response and stability.  

     FEATURES:

1.      Adjustable and Fixed of 1.2V, 1.8V, 3.3V, 5.0V
2.          Space saving SMD types of SOT-223
3.          1.2V Drop-out Voltage
4.          1.0A Output Current
5.          Line Regulation Typically
6.          Current Limiting and Thermal Protection

APPLICATION:

1.          Post regulator for switching DC/DC switching
2.          High Efficiency Line Regulator
3.          Battery Charges
4.          PC Add on Card
5.          Motherboard clock supplies
6.          LCD Monitor
7.          Set-top Box