L78M09ABV Allicdata Electronics
Allicdata Part #:

497-4616-5-ND

Manufacturer Part#:

L78M09ABV

Price: $ 0.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: STMicroelectronics
Short Description: IC REG LINEAR 9V 500MA TO220AB
More Detail: Linear Voltage Regulator IC Positive Fixed 1 Outpu...
DataSheet: L78M09ABV datasheetL78M09ABV Datasheet/PDF
Quantity: 1000
1 +: 0.00000
Stock 1000Can Ship Immediately
$ 0
Specifications
Series: --
Packaging: Tube 
Part Status: Obsolete
Output Configuration: Positive
Output Type: Fixed
Number of Regulators: 1
Voltage - Input (Max): 35V
Voltage - Output (Min/Fixed): 9V
Voltage - Output (Max): --
Voltage Dropout (Max): --
Current - Output: 500mA
Current - Quiescent (Iq): 6mA
PSRR: 56dB (120Hz)
Control Features: --
Protection Features: Over Current, Over Temperature, Short Circuit
Operating Temperature: -40°C ~ 125°C
Mounting Type: Through Hole
Package / Case: TO-220-3
Supplier Device Package: TO-220AB
Base Part Number: L78M09A
Description

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L78M09ABV is a low drop-out (LDO) voltage regulator with an output current of up to 500 mA. This three-terminal regulator integrates an NFET pass transistor and an output compensation capacitor that allows for rapid transient response and high output impedance. It also features low quiescent current, low dropout voltage, overranging capabilities and a wide input/output voltage range making it suitable for a wide variety of applications.

L78M09ABV is designed to provide a regulated power supply with an adjustable output voltage that ranges from 2.7V to 9.0V. It features a maximum output current of 500 mA and a fixed output voltage accuracy of ±2%. The dropout voltage of the L78M09ABV is just 0.5V (typical), which ensures that the output voltage remains very close to the input voltage even when the input voltage is a few hundred mV lower than the required output voltage.

The L78M09ABV can be used in many kinds of applications, such as DC to DC converters, logic and interface circuits, memory systems, automotive control systems, and power systems for mobile phones. It is suitable for use in low dropout applications, such as powering semiconductor devices with power requirements up to 200 mA or analog signal processing and control circuits with power requirements up to 400 mA. In addition, the L78M09ABV also offers an adjustable output capability for applications requiring higher currents and lower voltages.

The L78M09ABV has an internal power MOSFET driver that enables it to perform fast switching and thermal protection features. This regulator features current limit and thermal shutdown protected to prevent overload damage. It also has a wide temperature range which allows the regulator to operate in temperatures ranging from -40°C to 125°C.

The operating principle of the L78M09ABV is based on the three terminal linear regulator. It works by measuring the voltage across the feedback resistor and comparing it to the reference voltage. If the voltage is lower than the reference voltage, the internal circuit will increase the base current to the pass transistors, which will cause the current through the pass transistor to increase and brings the voltage at the output up to the desired level. Conversely, if the voltage is higher than the reference, the internal circuit will decrease the base current and the current through the pass transistor to bring the output voltage down to the reference voltage.

The L78M09ABV voltage regulator also features frequency compensation and output voltage transient response protection. This will allow the regulator to maintain its output voltage with even large changes in capacitance and load current. This protection is also important for keeping the transient response of the output voltage within the set or specified parameters, ensuring that the output remains within the required level.

In conclusion, the L78M09ABV is a reliable and efficient 3-terminal low drop-out voltage regulator. It is easy to use and offers a wide range of applications. It features low quiescent current and low dropout voltage, allowing it to provide a stable and efficient output voltage even when the input voltage is much lower than the required output voltage. Its internal power MOSFET driver and protection features provide protection against over-current, over-temperature and output transients. Its wide temperature range and frequency compensation also make it suitable for many different applications.

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

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