L6925D013TR Integrated Circuits (ICs)

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PMIC - Voltage Regulators - DC DC Switching Regulators are versatile circuit designs used to regulate voltage from one electrical signal or source to another or the same. The L6925D013TR is an example of such a regulator that is specially designed for automotive applications.

Overview of the L6925D013TR

The L6925D013TR is a stepped-down DC-DC switching regulator with a wide input voltage range. It can take up to 42V of input and has three preset output voltages ranging from 3.3V to 5.0V. A single external resistor can be used to adjust the output voltage between these levels. This controller also has a wide range of operating temperatures from -40°C to 150°C and is rated for a wide input range from 150 mA to 1 Amp.

Application Field

The L6925D013TR application field is ideally suited for automotive applications. It has a wide input range and can handle power surges up to 2.5V, which makes it ideal for powering automotive electronics such as displays, sensors, or radios. Additionally, the regulator’s overvoltage protection, undervoltage locking, and cycle-by-cycle current limit make it a reliable choice for in-vehicle applications. It can also be used in non-vehicle applications, such as powering external equipment, where low output ripple, high reliability, and compact form factor are important factors.

Working Principle

The L6925D013TR utilizes the circuit design of a DC-DC switching regulator. This type of regulator works by rapidly switching the input voltage on and off to create a lower voltage output. An internal oscillator provides the switching waveform that controls the on and off cycles. The switching frequency is typically around 25 kHz, though it can be adjusted with an external resistor. The output voltage is then regulated by an error amplifier that compares the output with a reference voltage. When the output is greater than the reference voltage, the oscillator is disabled, thus halting the switching and reducing the output voltage. The error amplifier then turns the oscillator back on when the output reaches the reference voltage or lower.

Conclusion

The L6925D013TR is a DC-DC switching regulator designed for automotive applications. Its wide input voltage range, high reliability and temperature range, and features such as overvoltage protection and undervoltage locking make it an ideal choice for powering automotive electronics. Its circuit design is based upon a DC-DC switching regulator, where an internal oscillator rapidly switches the input voltage on and off to create a lower output voltage.

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