MC78L09ACDG Allicdata Electronics
Allicdata Part #:

MC78L09ACDGOS-ND

Manufacturer Part#:

MC78L09ACDG

Price: $ 0.28
Product Category:

Integrated Circuits (ICs)

Manufacturer: ON Semiconductor
Short Description: IC REG LINEAR 9V 100MA 8SOIC
More Detail: Linear Voltage Regulator IC Positive Fixed 1 Outpu...
DataSheet: MC78L09ACDG datasheetMC78L09ACDG Datasheet/PDF
Quantity: 2254
1 +: $ 0.25200
10 +: $ 0.20223
100 +: $ 0.13791
500 +: $ 0.10342
1000 +: $ 0.07757
Stock 2254Can Ship Immediately
$ 0.28
Specifications
Current - Output: 100mA
Base Part Number: MC78L09
Supplier Device Package: 8-SOIC
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Operating Temperature: 0°C ~ 125°C
Protection Features: Over Temperature, Short Circuit
Control Features: --
PSRR: 57dB (120Hz)
Current - Quiescent (Iq): 6mA
Series: --
Voltage Dropout (Max): --
Voltage - Output (Max): --
Voltage - Output (Min/Fixed): 9V
Voltage - Input (Max): 30V
Number of Regulators: 1
Output Type: Fixed
Output Configuration: Positive
Part Status: Active
Packaging: Tube 
Description

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MC78L09ACDG, also known as Positive Voltage Regulator, is a 3-Terminal Voltage Regulator, which is widely used for various applications. It features adjustable current limits, low power consumption, and a wide input voltage range. Its relatively small size makes it ideal for high-density applications and its simple external components make it extremely cost-effective.

The MC78L09ACDG belongs to the PMIC (Power Management IC) family and belongs specifically to the Voltage Regulators – Linear category. This device is a type of integrated circuit that regulates its output voltage through linear methods to maintain a steady voltage supplied to an electronic circuit. Primarily, it functions as an amplifier, adjusting the input signals to maintain a desired output level. The MC78L09ACDG is a positive voltage regulator, therefore, it is configured as a step-down regulator.

The MC78L09ACDG provides a full range of supply voltage, with up to 8 V, 12 V or 15 V. Its operational power dissipation is 1 W and its power output is, nominally, 0.1 A. The device is capable of operating at temperatures of – 65°C to +150°C and up to 200°C during a start-up phase. Its excellent low-drop voltage performance and its low-noise operation further make it an ideal choice for many applications.

Since the MC78L09ACDG is a step-down regulator, its input voltage should be higher than its output voltage for it to work properly. The device is featured with an over-current protection, with adjustable limit set to approximately 0.3 A. The device is also simple to use, as it requires few external components and its pins are clearly labeled.

The MC78L09ACDG can be used in many types of applications, such as in battery-powered systems, where an isolated and adjustable power supply is needed. It is also suitable for use in voltage regulation circuit, LED and LCD charging applications, digital circuits, automotive modules, and various types of switching power supplies.

As for its working principle, the MC78L09ACDG uses a capacitor-input, voltage-feedback, series-pass regulator. The device’s non-inverting input pin is connected to the output voltage while its inverting input pin is connected to the reference voltage set-point. These inputs form a differential amplifier, which provides the output voltage regulation.

The output voltage regulation is performed by a series pass internal transistor, whose conductivity is adjusted by the differential amplifier to control the output voltage. Whenever the input voltage is higher than the output voltage, this transistor will be opened, allowing the current to flow to the output and closing the feedback loop, thus maintaining the output voltage. On the other hand, if the input voltage is lower than the output voltage, the transistor will remain closed and no current will be allowed to flow through.

The MC78L09ACDG is also featured with short-circuit current limit protection and over-temperature shutdown. The short-circuit protection works by sensing the output current and limiting it to a safe level whenever the current reaches a predetermined level. Similarly, the over-temperature protection feature shuts down the device whenever the temperature exceeds its preset value.

As a positive voltage regulator, the MC78L09ACDG is an effective and economical solution for applications that require a reliable voltage regulator. It is capable of providing up to 8 V, 12 V or 15 V with adjustable current limits, low power consumption and a wide input voltage range. Moreover, the device is simple to use and requires few external components. Therefore, the MC78L09ACDG makes a good choice for many types of applications that require a positive voltage regulator.

The specific data is subject to PDF, and the above content is for reference

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