7809 Voltage Regulator Fixed Positive 9V Linear IC L7809CV

7809 is a 9V Voltage Regulator that restricts the voltage output to 9V and draws 9V regulated power supply. The 7809 is the most common, as its regulated 9-volt supply provides a convenient power source for most TTL components.

7809 is a series of 78XX voltage regulators (as known as L78xx, LM78xx, MC78xx...), the xx is replaced with two digits, indicating the output voltage (for example, the 7805 has a 5-volt output, while the 7812 produces 12 volts).

Applications

• Circuits requiring steady 9v supply
• Protection for devices having specific voltage sensitivity
• DIY projects requiring specific voltage from an existing higher/ varying voltage supply

Features

• Fixed 9V voltage regulators
• Thermal overload protection
• Short circuit protection
• Output transition SOA protection
• Heatsink is required *

Specifications

• Output Type: Fixed
• Output Voltage: +9V dC
• Current Output: up to 1.5A
• Input Voltage: 11.5 - 35VDC​
• Quiescent (standby) current: 8mA
• Dropout Voltage (Max): 2 V @ 1A
• Category: Linear Voltage Regulators - Standard
• Polarity: Positive
• Operating Temperature: 0 to +125°C
• Mounting Style: Through Hole
• Pin Spacing Pitch: 2.54mm
• Hole Diameter: 3.8mm
• Dimensions: 10.4 x 4.6 x 9.15mm

Linear regulator like 7809 has performance issues with respect to battery life and Power loss. If you are looking for an alternative for 7809 with better efficiency and less power loss, then we would recommend a DC Buck Switching voltage regulator. 

Buck converters may be preferred over 78xx regulators because they are more efficient and do not require heat sinks, but they are more expensive.