LT1424IN8-9#PBF

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Application Field and Working Principle of LT1424IN8-9#PBF

LT1424IN8-9#PBF, categorized as PMIC - Voltage Regulators - DC DC Switching Regulators, is an integrated circuit used as a pulse-width-modulation (PWM) current-mode controller. It is designed to get feedback information from an external circuit to provide a constant output current or voltage. In other words, it is a switching regulator designed to provide a regulated output with current or voltage feedback.

Features

The most salient features of LT1424IN8-9#PBF are its high-efficiency switching regulator design and its ability to work in extreme temperatures. The circuits can handle input voltages from 4.5V to 30V and provide an output voltage that ranges from 0.6V to 27V. Additional features of the device include:

• Automatic Shutoff for Overload and Temperature
• Soft-Start
• CMOS Voltage Regulator
• Voltage Limiting on OVP/UVP/OVS
• Adjustable Load Line
• Low saturation circuit for external current sensing

Application Fields

The LT1424IN8-9#PBF, with its high efficiency and low on-resistance switching, is ideal for use in a variety of applications. These include:

• Active Clamp Flyback Controller
• Buck Regulators
• Forward Converter Regulator
• Polorizing Regulator
• Charge-pump Regulator
• Synchronous Rectifier Regulator
• Remote Sensing Regulator
• LED Driver
• Battery Charger

Working Principle

The LT1424IN8-9#PBF controls the output voltage/current by using Pulse-Width Modulation (PWM) current-mode control. This is done by using a power MOSFET as the switch. The device senses the current in the output coil and produces a signal to the MOSFET based on the duty cycle of the PWM signal. The duty cycle is the ratio between the \'on\' and \'off\' times of the switch. As the output current decreases, the duty cycle is increased. If the output current increases, the duty cycle is decreased. This cycle is repeated until the desired output current/voltage is achieved. The device also has several protection features such as short-circuit protection, over-voltage protection, and soft start.

Conclusion

LT1424IN8-9#PBF has been specifically designed for high efficiency, low on-resistance switching, thermal and overload protection, and soft start functions. It is ideal for use in a variety of applications such as active clamp flyback controllers, buck regulators, forward converters, polarizing regulators, charge-pump regulators, synchronous rectifier regulators, remote sensing regulators, LED drivers, and battery chargers. The device uses current-mode control to regulate the output current/voltage, providing reliable and stable operation. As such, LT1424IN8-9#PBF is an excellent choice for any application requiring control of a regulated output.

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