LT1308BCF#TRPBF

PMIC - Voltage Regulators - DC DC Switching Regulators

LT1308BCF#TRPBF is a monolithic switching regulator from Linear Technology. It is one of several high efficiency, low noise DC/DC converters that are used in a variety of applications. This regulator can provide up to 4A output current with ~80% efficiency. It is also used in applications where high step-up and step-down ratio is required.

Application Fields

LT1308BCF#TRPBF is used in different application fields, namely, automotive, industrial, and consumer applications. Some of these applications are as follows:

• Automotive applications: It can be used in electrically powered windows, fire extinguishers, and power steering systems.
• Industrial applications: It can be used in motor drives, factory automation, and oil field instrumentation.
• Consumer applications: It can be used in portable consumer products, such as consumer electronics and appliances.

Working Principle

LT1308BCF#TRPBF uses a pulse width modulation (PWM) technique for voltage conversion. This technique starts with a low-power DC voltage (input voltage) and then modifies it through a switching process. In this process, the switching transistors are either in saturation (fully opened) or in cutoff state (fully closed) in a repetitive cycle. In saturation state, the current passes through the transistor and modifies input voltage, while in cutoff state, all current stops flowing. This modulation of input voltage is based on a single-ended PWM (SEPWM) technique, where transformer center-tapping is used to achieve input and output isolation.

Apart from PWM, LT1308BCF#TRPBF also uses a voltage control comparator (VCC) for voltage regulation. This VCC monitors input and output voltages continuously and is responsible for keeping the output voltage constant and stable. If the input voltage is higher than the output, then the VCC increases the duty cycle of PWM signal, thus increasing the output voltage. Similarly, if the input voltage is lower than the output, then the VCC decreases the duty cycle of PWM signal, thus reducing the output voltage.

Benefits of LT1308BCF#TRPBF

There are several advantages of using LT1308BCF#TRPBF in applications. It has wide input voltage range and can support up to 80% efficiency. It also provides fast transient response and is highly immune to noise due to its low output voltage ripple and integrated EMI filter. Its small size and low integration level helps in saving board space and cost. Moreover, its low operating current helps in reducing power loss and improving system efficiency.

Conclusion

In conclusion, LT1308BCF#TRPBF is a high efficiency, low noise DC/DC converter that is used in different applications. Its wide input voltage range and high efficiency makes it suitable for automotive, industrial, and consumer applications. Moreover, its small size and fast transient response makes it a perfect choice for products that require low operating current and power consumption.