This series of fixed- voltage integrated-circuit voltage regulators is designed for a wide range of applications. These applications include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. Others have pointed you to the dropout voltage parameter.
Forget the typical value, the worst case (in this case the maximum) is the only relevant figure. My linear voltage regulator is.
It is Voltages Max, also it depends upon how much current are you going to draw from it, eventually is a trade off between the total power dissipation across the device. Either design your circuit so that the input voltage going into the regulator is limited to 2- volts above the output regulated voltage or place an appropriate . There are various ranges , in several package types available from many component manufacturers, some of which are shown in Fig. However dropout voltage is not an . ICs have three terminals and are commonly found in the TO-2form factor, although they are available in surface-mount, TO-9 and TO-packages.
These devices support an input voltage anywhere from around 2. The voltage regulator IC maintains the output voltage at a constant value. The xx in 78xx indicates the fixed output voltage it is designed to provide.
V regulated power supply. Capacitors of suitable values can be connected at input and output pins depending upon the respective voltage levels. Well maybe not at only 50mA which will keep you around watts. LM79XX: Voltage regulators that output negative voltage , XX= voltage output. It will allow you to isolate . Pin ( Input Pin): The Input pin is the pin that accepts the incoming DC voltage , which the voltage regulator will eventually regulate down to volts.
Pin (Ground): Ground pin establishes . Transformer : Selecting a suitable transformer is of great importance. The current rating and the. Max input voltage , = 35V. Quiescent (standby) current, = 5mA.
Output Voltage Tolerance. Storage Temperature Range. Refer to the test circuits. V input voltage range and provide 300mA of maximum current. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.
Lead Temperature (Soldering 10sec).
The maximum value for input to the voltage regulator is 35V. It can provide a constant steady voltage flow of 5V for higher voltage input till the threshold limit of 35V. If the voltage is near to 7. V then it does not produce any heat and hence no need for heatsink.
ESD Susceptibility ( Note 2). Operating Junction Temperature. Table 1: Absolute maximum ratings. DC input voltage for VO= to V.