L7809ABV - STMicroelectronics

Manufacturer Part Number

L7809ABV

Manufacturer

STMicroelectronics

Introduction

The L7809ABV is a linear voltage regulator designed to provide a fixed 9V output from an input voltage up to 35V. It belongs to a family of low-dropout (LDO) regulators suitable for a wide range of power management applications.

Product Features and Performance

Fixed 9V output voltage

Capable of delivering up to 1.5A of output current

Maximum voltage dropout of 2V at 1A, ensuring efficiency

Low quiescent current of 6 mA, beneficial for power-sensitive applications

PSRR (Power Supply Rejection Ratio) of 61dB at 120Hz, highlighting its ability to suppress input voltage noise

Equipped with over-temperature and short-circuit protection for enhanced reliability and safety

Product Advantages

High reliability in demanding environments with an operating temperature range of -40°C to 125°C

Compatibility with a broad range of input voltages up to 35V

Easy to integrate into designs with a through-hole TO-220 package

Key Technical Parameters

Voltage Input (Max): 35V

Voltage Output (Min/Fixed): 9V

Current Output: 1.5A

Voltage Dropout (Max): 2V @ 1A (Typ)

Current Quiescent (Iq): 6 mA

PSRR: 61dB (120Hz)

Operating Temperature: -40°C to 125°C

Package / Case: TO-220-3

Quality and Safety Features

Over Temperature protection

Short Circuit protection

Compatibility

Through-hole mounting compatible with standard PCBs

Suitable for a wide range of electronic devices requiring a stable 9V supply

Application Areas

Consumer electronics

Industrial controls

Power management systems

Telecommunications equipment

Product Lifecycle

The L7809ABV is marked as Obsolete, indicating that it is nearing the end of its production life

Users should consider looking for replacements or upgrades from the same manufacturer or compatible alternatives

Several Key Reasons to Choose This Product

Reliable performance with a fixed 9V output and up to 1.5A of current

Versatile application due to wide input voltage range and robust operating temperature

Integral safety and protection features ensuring long-term reliability

Availability in a standard TO-220 package, facilitating easy implementation into existing designs

Despite being obsolete, its specifications may still meet the requirements for various applications requiring a stable and reliable power supply