BA7809FP-E2

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BA7809FP-E2 is an adjustable fixed two-terminal 3-terminal low-dropout voltage regulator that is classified as a PMIC, Voltage Regulators – Linear. Applications for this package utilize a wide variety of ceramic capacitors, in-circuit and board-level decoupling and some form of sequential programming.

The BA7809FP-E2 offers higher output current levels, lower power consumption, increased reliability, overcurrent protection and lower output noise levels when compared to other linear regulators. It also provides ±1.25% output voltage accuracy. These features make the BA7809FP-E2 suitable for use in many applications, including computers and data storage systems, telecommunications equipment, consumer electronics, automotive applications, and industrial equipment.

The working principle of BA7809FP-E2is based on a feedback loop that controls the output voltage. When an input voltage is applied to the regulator, it drops a certain amount of voltage at its output. This voltage drop is monitored by the regulator, and if the output voltage drops below the reference voltage set by the user, the regulator will adjust the output voltage to match the reference voltage.

This mechanism can also be used to adjust the voltage to account for varying loads. In this configuration, the regulator will measure the voltage at its output and adjust the reference voltage accordingly. This is achieved by using a feedback loop that is constantly monitoring the output and adjusting the reference voltage accordingly.

The BA7809FP-E2 is a high efficiency regulator with quiescent current lower than 0.97 mA and drops a typical 1.50 V at an output current of 100 mA. The maximum output current is 500 mA and the ripple rejection is 65 dB up to 1 kHz. The regulator’s short circuit current limit is internally fixed to 6mA and its thermal shutdown circuit monitors its temperature and reduces the output current to protect the device from over-temperatures.

BA7809FP-E2 is available in fixed-output 1.8 V and 5 V versions. It operates from input voltage supplies ranging from 1.2 V to 32 V and is temperature compensated for excellent stability, allowing for operation over a wide temperature range of –40°C to +125°C. Additional features include a wide operating frequency (from 10kHz to 1MHz) to reduce output ripple and noise in order to achieve maximum regulation, fast transient response and low quiescent current.

The BA7809FP-E2 can be used for a variety of applications, such as power supplies for portable electronics, distributed systems and computers, as well as in test and measurement applications. By taking advantage of the feedback loop and temperature compensation, this regulator is excellent choice for any application where stability and accuracy are paramount.

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