7905 Negative Voltage Regulator 5V 1.5A TO-220

Description

7905 Negative Voltage Regulator 5V 1.5A TO-220 The 5V-7905 Negative Voltage Regulator is an electronic component designed to provide a stable negative output voltage of -5V, typically used in power supply circuits for electronic systems that require negative voltage. It operates in a wide input voltage range, typically from +12V to +24V DC, and provides a constant negative 5V output for use in various applications. The name 7905 signifies two meaning, “79” means that it is a negative voltage regulator and “05” means that it provides 5V as output. So our 7905 will provide a -5V output voltage. The output current of this IC can go up to 1.5A, but the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current. For example if the input voltage is 12V and you are consuming 1A, then (12-5) * 1 = 7W. This 7 Watts will be dissipated as heat. Features: Fixed −5V output with tight tolerance options (AC and C versions). Output current capability up to 1.5A with internal current limiting and thermal shutdown. Short-circuit protection and Safe Operating Area (SOA) protection for rugged operation. Low quiescent current and good line/load regulation for stable operation. Low dropout voltage (typical 1.4V@1A). Wide operating and storage temperature ranges suitable for industrial use. Specifications: Physical Case/Package: TO-220 Mount: Through Hole Number of Pins: 3 Technical Dropout Voltage: 1.4 V Max Input Voltage: -35 V Max Operating Temperature: 150 °C Max Output Current: 1.5 A Min Input Voltage: -7 V Min Operating Temperature: 0 °C Min Output Voltage: -5 V Nominal Output Voltage: -5 V Number of Channels: 1 Number of Outputs: 1 Number of Regulators: 1 Output Current: 1.5 A Output Type: Fixed Output Voltage: -5 V Polarity: Negative Power Supply Rejection Ratio (PSRR): 60 dB Quiescent Current: 3 mA Tolerance: 10 % Pinout Diagram: Pin Number Pin Name Description 1 Ground (Gnd) Unregulated Input Voltage 2 Input (V+) Connected to Ground 3 Output (Vo) Outputs Regulated -5V Why do we need Negative Voltage Regulators? Negative voltage regulators are mainly used in Op-Amp and other circuits where a negative supply voltage is needed. In many cases where an Op-Amp is working in dual mode power supply a negative voltage will be regulated by these 79XX ICs. Also these IC’s will be able to source current into the ground rail instead of sinking it as normally. Applications: Constant -5V output regulator to for op-amp signals Adjustable Output Regulator Current Limiter for certain applications Regulated Dual Supply Documents: Datasheet LM7905 CAD Files Download

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