7905 -5V Negative Voltage Regulator IC
₹17.90
The PL 7905 is a negative voltage regulator that provides a fixed -5V output with up to 1.5A current. Comes in a TO-220 package, ideal for regulated dual power supplies and analog applications.
100 in stock
Description
Technical Overview of the 7905 -5V Negative Voltage Regulator
The 7905 -5V Negative Voltage Regulator is a dedicated fixed-output linear regulator designed to provide a stable -5V DC output. Housed in the popular TO-220 package, this IC is the negative voltage counterpart to the 7805 regulator. It is an essential component for engineers and hobbyists building split-rail power supplies, which are required for operational amplifiers, data converters, and specialized analog circuits. Capable of delivering up to 1.5A of current, the 7905 ensures that your negative voltage rails remain noise-free and perfectly “on track.“
Key Specifications and Functional Parameters
7905 -5V Negative Voltage Regulator
To ensure high performance in your power stage, here are the technical specifications for the 7905:
Output Voltage: Fixed -5.0V.
Output Current: Up to 1.5A (with adequate heatsink).
Input Voltage Range: -7V to -25V (Recommended -8V to -20V).
Package Type: TO-220 (Through-hole).
Dropout Voltage: Typically 2.0V.
Internal Protection: Thermal overload protection and short-circuit current limiting.
Operating Temperature: -40°C to +125°C.
Why Choose the 7905 for Negative Rail Regulation?
The 7905 -5V Negative Voltage Regulator is highly valued for its excellent ripple rejection and thermal stability. In circuits where a clean reference is needed—such as in analog-to-digital converters or high-gain audio pre-amps—the 7905 effectively filters out input noise. Its linear design is significantly “quieter” than switching regulators, making it the preferred choice for sensitive signal paths. At BuyCircuitParts, our 7905 ICs are selected for their tight output tolerance, ensuring your negative 5V rail stays consistent even under varying load conditions.
Common Applications for the 7905 IC
The 7905 -5V Negative Voltage Regulator is a staple in various electronic designs:
Dual Power Supplies: Working alongside the 7805 to provide +5V and -5V rails for Op-Amp circuits.
Analog Signal Processing: Powering precision comparators and DACs that require a bipolar supply.
Industrial Equipment: Regulating negative bias voltages in motor controllers and sensor interfaces.
Audio Gear: Providing the negative rail for mixers and synthesizers to ensure high dynamic range.
Test Instrumentation: Serving as a stable negative reference in laboratory multimeters and oscilloscopes.
CRITICAL: Pinout Alert & Integration Tips
To avoid damaging your circuit, please follow these professional integration guidelines for the 7905 -5V Negative Voltage Regulator:
Pinout Difference: Unlike the 7805, the 7905 (Negative) pinout is: Pin 1: GROUND, Pin 2: INPUT, Pin 3: OUTPUT (Front view, pins down).
Center Pin is NOT Ground: Remember, the center pin (Pin 2) is the Negative Input. Connecting Ground here will short the circuit.
Metal Tab Warning: The metal mounting tab is internally connected to Pin 2 (Input). If you are mounting it on a common heatsink with a 7805, you MUST use a mica or silicone insulator to prevent a short circuit.
Capacitor Selection: For stability, use a 2.2µF capacitor on the Input and a 1µF capacitor on the Output.
Why Buy from BuyCircuitParts?
As a specialized seller, we prioritize technical accuracy and component reliability. At BuyCircuitParts, our 7905 -5V Negative Voltage Regulator inventory is sourced from trusted manufacturers to ensure genuine performance. We provide ICs with high-quality tinned leads for easy soldering and clear laser markings. Our fast shipping and technical expertise help you build reliable power systems and keep your hardware “on track.“
Durability and Thermal Reliability
The 7905 -5V Negative Voltage Regulator is designed for long-term industrial use. Its internal thermal shutdown feature acts as a safety net, automatically cutting power if the device exceeds its safe operating temperature. Whether you are building a custom laboratory power supply or a robust analog controller, this regulator provides the stability and protection your electronics demand. By choosing BuyCircuitParts, you are investing in high-standard power management hardware.
📐 Approx Dimensions (TO-220 Package):
Height (with leads): ~16 mm
Body Height: ~10 mm
Width: ~10.2 mm
Thickness: ~4.5 mm
Pin Pitch: 2.54 mm
Mounting Hole: ~3.3 mm
🧊 Note:
Product colour and markings may vary slightly based on manufacturer and batch. Functionality is guaranteed. (Refer to the product image for illustration only. For precise specifications, consult the datasheet.) For detailed electrical characteristics and thermal derating curves, refer to the LM7905 Datasheet (PDF)
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Additional information
| Weight | 10 g |
|---|---|
| Dimensions | 1 × 1 × 2.7 cm |
| HSN | 85423100 |
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