AN77L12M-E1

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AN77L12M-E1 is a two channels of low-dropout (LDO) voltage regulator, which has a small and a large type in the series. This LDO delivers low dropout voltage, low quiescent current, good power supply rejection ratio (PSRR) and small size to meet the needs of various applications. Due to its features, AN77L12M-E1 can be widely used in DC/DC converters, power management system, portable electronic devices and communication equipment.

Application Field

AN77L12M-E1 is a single-chip voltage regulator that provides two channels in the same footprint. It is a cost-effective solution providing total current from 0.5A to 1.5A, stability and low standby current, making it ideal for post-regulated applications. It is mainly used for applications with high power consumption, such as industrial and consumer circuits. With its wide operating range and fast transient response, AN77L12M-E1 is suitable for many applications, including automotive, consumer electronics and communications.

AN77L12M-E1 is also suitable for microcontroller, DC-DC converter and wide voltage range applications, its features make it suitable for unstable power supply system that may require a low dropout voltage to maintain the output\'s stability. Moreover, AN77L12M-E1 can be used in some handheld and battery-powered applications that require battery backup, such as PDAs, mobile telephone and other portable electronic devices.

Working Principle

AN77L12M-E1 is a two channels low-dropout voltage regulator with adjustable output voltage. Its operation is based on the controlled conduction of N-MOSFETs, which can be found in the output stages of the device. The device functions as a voltage regulator by controlling the flow of current to generate a desired output voltage. The device operates in a linear control mode, which means that the output voltage is determined by the difference between the reference voltage and the control voltage.

At the input side of the device is the power supply, which supplies a voltage to the linear voltage regulator. This input voltage passes through the amplifier, which then provides a signal to the output stage. The output stage is made up of multiple N-MOSFETs, and these transistors alternately control the flow of current, allowing it to pass through or block it. By controlling the flow of the current, the linear regulator is able to achieve the desired output voltage.

The linear regulator also features a low standby current and good power supply rejection ratio. Its low standby current helps to reduce the overall power consumption, while its good PSRR makes it suitable for use in unstable power supply systems. Overall, the AN77L12M-E1 linear regulator offers low quiescent current, low dropout voltage and excellent PSRR to provide a reliable and cost-effective voltage regulation solution.

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