L4931ABD120TR Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The L4931ABD120TR is a low power linear voltage regulator device that is capable of providing up to 120mA of output current. It can be used as an alternative to low power switching supplies, offering improved efficiency and lower noise. L4931ABD120TR is a three-terminal adjustable voltage regulator featuring a very low current consumption of only 60 μA. This makes it the ideal product when the power supply has to be replaced but the output current need to remain the same.

The L4931ABD120TR has a very wide range of input voltages, ranging from 4V to 40V and is able to supply an output voltage between 1.2V and 37V. It can be easily adjusted by simply connecting a resistor divider between the output and the adjust pins. The device is protected with a built-in current Limiting circuit, which activates when the output current exceeds 120mA. It also features optional thermal protection to prevent any damage caused by overheating.

The L4931ABD120TR is intended for use in various applications such as mobile devices, portable devices, automotive and industrial electronics. It can be used for powering a wide range of loads, including logic circuits, digital timers, LCDs and microwaves. It is also useful for buck-converter applications, allowing the output voltage to be regulated from a high input voltage in the range of 4V to 40V.

The main application field of the L4931ABD120TR is the conversion of a high input voltage into a steady low output voltage, making it ideal for battery-powered devices. It can also be used in DCDC converter applications, acting as an adjustable linear regulator in order to fine-tune the output voltage from a high input voltage using a resistor divider. Additionally, due to its low current consumption, it is suitable for applications that require very low standby power levels.

The device works by using the internal voltage reference of 1.2V and amplifying it with an internally fixed gain of 40. This gain is determined by the ratio of the external resistors connected to the adjustment pin. As the reference voltage is increased, the output voltage will follow suit.

However, if the load current is too high and the output voltage starts to drop, the current limiter circuit will activate and shut down the device to prevent the output voltage from dropping any further.

Beyond its main application, the L4931ABD120TR can be used in special applications such as in a low dropout low noise benchtop power supply, or a dual polarity adjustable power supply.

The L4931ABD120TR is a popular device for many applications, due to its high efficiency, low current consumption, wide input range, low noise and high accuracy. With its simple connection and small size, it is the perfect solution for any design requiring a reliable and efficient power regulator.

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