Description: L7905 Voltage Regulator
7905 IC LM7905 Voltage Regulator IC L7905CV L7905 -5V 1.5A 3 Pin TO-220 Fixed -5V 7905 Voltage Regulator IC 7905 Transistor IC
7905 is a voltage regulator integrated circuit. It is a member of 79xx series of fixed linear voltage regulator ICs. The voltage source in a circuit may have fluctuations and would not give the fixed voltage output. 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. 7905 provides a regulated supply of -5 V and 1A current. Its additional features include internal thermal overload protection, short circuit protection and output transistor safe operating area compensation.
LM7905 is a 3 pin negative voltage regulator IC. It is the IC of LM79xx series, LM79xx is a series of fixed negative voltage regulator IC this series also contains other fixed voltage ICs such as LM7908, LM7912, LM7915 which can be selected as per the user application requirements. LM7905 provides fixed -5V output and the input voltage can be between 8V to 35V DC, one thing should be remembered when using this series regulators is that the input voltage must of 2V to 3V higher than the output voltage to get accurate and stable -5V at the output, and the input current should be 1.6A to 2A to get accurate 1.5A at the output. While operating the IC a suitable heatsink is a must to use or else the IC will continuously goes in the shutdown mode when the load will be connected.
The IC requires only one or two external capacitors for filtration purpose and other than that all the important circuitry is built inside the IC.
The internal circuit of the IC also contains many built in functions such as overheat protection function which immediately shutdown the IC when the inside or outside temperature goes above the set limit, over load protection, short circuit protection and many other protection circuitry which makes this IC robust, internally damage proof and reliable to use in commercial equipment
- Manufactured in TO-220 and other Packages
- Max 1.5A output current
- Built in short circuit protection circuitry
- Built in overheat shutdown circuitry
- Accurate -05V output
- Input voltage max 35V DC
- Low quiescent or standby current
- Low cost high reliability
- Reliable to use in commercial applications
7905 Regulator Features
- 5V Negative Voltage Regulator
- Output Voltage: -5V
- Output Current: 1.5A
- Minimum Input Voltage is 7V
- Maximum Input Voltage is 25V
- Operating current(IQ) is 5mA
- Internal Thermal Overload and Short circuit current limiting protection is available.
- Junction Temperature maximum 125 degree Celsius
- Available in TO-220 and KTE packag
Where & How to Use
LM7905 can be used in power supplies, chargers, voltage step down applications etc. Using the IC is not very difficult and the user can easily use it by checking its pinout.
- Dual Power Supplies
- Voltage converter circuits
- Voltage step down circuits
- Battery Chargers
- Motor Drivers applications
Replacement and Equivalent / Other Part Numbers
UA7905, GL7905, KIA7905PI if you can’t find these equivalent ICs then you can also use LM337 adjustable negative voltage regulator IC and set it to get fixed -5V output.
How to Safely Long Run in a Circuit
To get long term performance from this IC do not apply more than 35V voltage at the input, do not drive load of more than 1.5A, use a suitable heatsink with this IC and always store and operate this IC in temperature from -65 degree centigrade to +150 degree centigrade.
- 1 x LM7905 L7905CV L7905 7905 -5V 1.5A Voltage Regulator IC 3 Pin TO-220 Package Fixed -5V Negative Voltage Regulator IC Chip
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