AN77L07

Current - Output:	100mA
Base Part Number:	AN77L07
Supplier Device Package:	3-SSIP
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type:	Through Hole
Operating Temperature:	-30°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	65dB (120Hz)
Current - Quiescent (Iq):	5mA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	7V
Voltage - Input (Max):	17.78V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Bulk

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Introduction

The AN77L07 is a linear voltage regulator integrated circuit that is used to regulate voltage and current in different applications. By taking a DC input, such as a battery, it regulates the output voltage to the desired level. The AN77L07 is designed and manufactured by STMicroelectronics, a global leader in semiconductor technology.

Applications

The AN77L07 voltage regulator is designed for use in a wide range of applications. It is particularly well-suited for use in portable or mobile electronics, such as laptops, digital cameras, and handhelds, where low quiescent current and low standby power dissipation is important. It can also be used in applications such as motor controls, automotive, and medical equipment that require tight regulation of the power rails.

Features

The AN77L07 has several features that make it suitable for a wide range of applications. It is capable of supplying up to 500mA of output current, with a dropout voltage of 1.5V. It has an adjustable output voltage range between 1.2V and 25V, and is stable with ultra-low ESR ceramic capacitors. It also features very low quiescent current and low standby power, making it ideal for portable or mobile applications. The AN77L07 is also capable of withstanding transients such as load dump, brown out, and reverse battery protections.

Working Principle

The AN77L07 voltage regulator works on a standard linear voltage regulator. To achieve voltage regulation, the device uses a series pass transistor that connects the output of the regulator, to the reference voltage. The reference voltage is set by an adjustable divider which is usually composed of separate resistors. When the output voltage deviates from the reference voltage, the pass transistor will adjust the current to the output, to allow it to stabilise at the desired voltage level.By using a series pass transistor, the regulator is able to provide a range of different output voltage levels, without the need for additional circuitry. The referencing circuit is also adjustable, allowing for flexible output voltage levels.

Conclusion

The AN77L07 linear voltage regulator is a highly versatile integrated circuit that can be used in a wide range of applications. With its low quiescent current, low standby power, and adjustable output voltage range, the AN77L07 is well-suited for portable and mobile applications, as well as automotive and medical applications. The AN77L07 works on a standard linear voltage regulator principle, with a series pass transistor that adjusts the output voltage according to the reference voltage.

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