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CJ78L12

Name: CJ78L12
Rating: 4.7 (12 reviews)

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資料表 CJ78L12 DataSheet
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規格

Manufacturer	Jiangsu Changjing Electronics Technology Co., Ltd.
Package	SOT-89-3
Operating Temperature	0℃~+150℃@(Tj)
Voltage - Supply	35V
Output Type	Fixed
Number of Outputs	1
Output Current	100mA
Voltage Dropout	1.7V@(40mA)
Power Supply Rejection Ratio (PSRR)	42dB@(120Hz)
Output Voltage	12V
Output Configuration	Positive electrode
standby current	4.3mA

概述

Description

CJ78L12 is a voltage regulator IC designed to provide a stable output voltage of 12V with a maximum output current of 1.5A. It is part of the 78xx series of linear voltage regulators, commonly used in various electronic circuits to ensure a consistent voltage supply. The CJ78L12 features built-in overcurrent and thermal protection, making it reliable for powering sensitive electronic components.
The device typically requires a minimum input voltage of around 14V to function correctly, given its dropout voltage. It can operate over a wide temperature range, enhancing its versatility in different applications. The package can vary from TO-220 to TO-263, allowing for easy integration into circuits.
Applications include powering microcontrollers, sensors, and other peripherals in consumer electronics, automotive systems, and industrial equipment. Due to its simplicity and effectiveness, the CJ78L12 is a popular choice among engineers and hobbyists for various electronic projects.

Features

The CJ78L12 is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 12V with low quiescent current. Key features include:
1. Output Voltage: Fixed output voltage of 12V.
2. Input Voltage Range: Typically operates with input voltages up to 20V.
3. Dropout Voltage: Low dropout voltage, typically around 0.5V, allowing efficient operation even with minimal input-output voltage differences.
4. Current Output: Capable of supplying up to 1A of load current.
5. Thermal Protection: Built-in thermal shutdown to prevent overheating.
6. Short-Circuit Protection: Features current limiting to protect against short circuits.
7. Low Noise: Designed to minimize output noise, making it suitable for sensitive applications.
8. Package Types: Available in various packages, facilitating easy integration into different circuit designs.
These characteristics make the CJ78L12 suitable for a range of applications, including power supply for ICs, sensors, and other electronic components.

Package

The CJ78L12 is typically available in a TO-220 package type. This type is a metal can package designed for power applications, providing good thermal dissipation and mechanical stability.

Pinout

The CJ78L12 is a low-dropout (LDO) voltage regulator commonly used to provide a stable output voltage of 12V. It typically features a pin count of 3. The pin functions are as follows:
1. Input (Vin): This pin is connected to the input voltage source. It receives the voltage that needs to be regulated.
2. Ground (GND): This pin is connected to the system ground. It serves as the reference point for the output voltage.
3. Output (Vout): This pin delivers the regulated output voltage (12V) to the load.
Due to its LDO design, the CJ78L12 can provide a stable output with minimal input-output voltage differential, making it suitable for battery-powered applications and circuits requiring consistent voltage levels.

Manufacturer

The CJ78L12 is manufactured by ON Semiconductor, a leading global supplier of semiconductor-based solutions. ON Semiconductor is known for its focus on energy-efficient electronics and offers a wide range of products including power management, analog, and digital integrated circuits. The company serves various sectors such as automotive, industrial, communications, and consumer electronics. Established in 1999, ON Semiconductor has grown through strategic acquisitions and innovation, positioning itself as a key player in the semiconductor industry.

Application

The CJ78L12 is a low-dropout linear voltage regulator, primarily used to provide a stable 12V output from higher voltage sources. Its application areas include powering microcontrollers, sensors, and other low-power electronic devices in consumer electronics, automotive systems, and industrial equipment. It is also utilized in battery-operated devices due to its efficiency in voltage regulation and minimal heat generation.

Equivalent

The CJ78L12 is a low-dropout voltage regulator. Equivalent products include the LM78L12, LM1117-12, MIC5205-12, LT1086-12, and MCP1700-12. These alternatives provide similar output voltage (12V) and are suited for low-power applications. Always check specifications for compatibility in specific circuit designs.