LT1185IT#30PBF Datasheet/PDFThe LT1185IT#30PBF is a low dropout linear voltage regulator integrated circuit (IC). It is a voltage source, with a wide input voltage range and tight output voltage tolerance, and can provide currents up to 2.0A. This IC is often used for low-power regulation in many portable and distributed applications, such as cell phones, PDAs, medical instruments, and audio-visual applications.
Structure and Sepcification
The LT1185IT#30PBF IC provides a wide input range from slightly higher than the output voltage up to 36V. Its output voltage tolerance is typically 3% over the entire input voltage range. The nominal output voltage is adjustable using an external resistor divider, and is accurate to within a few millivolts.
This IC is designed to provide low dropout and go into shut down at very low input voltages. It can provide currents up to 2.0A, and has a wide operating temperature range. The LT1185IT#30PBF also has very low quiescent current, at only a few milliamperes, and requires very little external components for regulating in applications such as battery-powered circuits.
The LT1185IT#30PBF is a very versatile voltage regulator and is widely used in many applications. It features many protection features such as short-circuit protection, thermal overload protection, over temperature protection, and reverse current protection. Due to its versatile and efficient design, this IC is used in many applications such as cell phones, PDAs, medical instruments, and audio-visual equipment.
Working Principle
The LT1185IT#30PBF is a low dropout linear voltage regulator. This means that the output voltage is regulated by the input voltage and current. The input voltage is regulated by the voltage regulator, and the current is controlled by an overload protection circuit. The output current is limited by an internal current limiter. To maintain a constant output voltage, the current is limited until the input voltage drops below the internal reference voltage.
The LT1185IT#30PBF provides excellent transient response time, which is beneficial in applications where the load current is rapidly changing. The LP2985 linear voltage regulator is also designed with a low-noise on-chip current limiter and an over temperature circuit. This prevents excessive current from flowing through the IC, and helps to keep the output voltage stable.
The LT1185IT#30PBF can also be used with an external resistor divider to adjust the output voltage. The two resistors in the divider should be tied to the two adjustable pins, and the output will be the ratio of these resistors. The internal reference voltage of the voltage regulator is around 1.225V and this can be used to adjust the output voltage. By setting the feedback voltage to a certain value, the output voltage can be regulated to that value.
Conclusion
The LT1185IT#30PBF is a versatile and efficient linear voltage regulator IC. It can provide currents up to 2.0A, and has a wide operating temperature range and low quiescent current. It features protection features such as short-circuit protection, thermal overload protection, over temperature protection, and reverse current protection. It can also be used with an external resistor divider to adjust the output voltage. Due to its versatility and efficiency, this IC is used in many applications such as cell phones, PDAs, medical instruments, and audio-visual equipment.