LT3436EFE#TRPBF

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LT3436EFE#TRPBF Application Field and Working Principle

The LT3436EFE#TRPBF is a type of DC DC switching regulator under the PMIC (Power Management Integrated Circuits) category. It is designed with a variety of application fields, such as lithium-ion (Li-ion) and lead acid battery charging.

The LT3436EFE#TRPBF is a high efficiency, low quiescent current switching regulator with voltage-mode control. It is capable of delivering up to 1A output currents and includes a low-side MOSFET switch with current sense and a protection circuit, comprising of a voltage limiter, output short-circuit protection, over-temperature protection, and an under-voltage lockout.

The LT3436EFE#TRPBF offers high level of performance due to the low on-resistance, high-efficiency and fast response time of the internal MOSFET switch. It also features low RDS(ON) at 0.7 to 1.3 mΩ and low over-voltage protection. Additionally, it can be programmed using external resistor divider networks and enable, disable and reset pins.

Working Principle

The LT3436EFE#TRPBF operates in voltage mode control, which entails that the device can accurately regulate its output in the presence of load transients. It works by controlling the duty cycle (D) of the internal MOSFET switch in order to regulate the output voltage. The D value is proportional to the ratio of the output voltage and feedback voltage. The device is also able to adjust the peak and average current limits, depending on the voltage set by the voltage divider feedback network.

The LT3436EFE#TRPBF utilizes the equations mentioned below to determine the duty cycle (D) and current limit (I):

D=Vo/(Vf+Vout)
I=K/Vf

Here Vo is the output voltage and Vf is the feedback voltage, and K is a constant that is determined from the internal current sense resistor. The main benefit of this technique is that the device can accurately limit the road current in any degree of load transients.

The LT3436EFE#TRPBF draw maximum current from the power sources, has shifted voltage regulation of up to 90V, provides fast response time and is able to easily integrate with micro-controllers and DSPs. Other benefits includes a wide input voltage range, low switch on resistance and EMI suppression.

In conclusion, LT3436EFE#TRPBF is a high efficiency switching regulator designed for a variety of application fields and is capable of delivering up to 1A output currents. It operates with voltage-mode control and its working principle involves controlling the duty cycle and current limit of the internal MOSFET switch in order to regulate the output voltage. The device offers low switch on resistance, low quiescent current, fast response time, and other features that makes it suitable for use in various applications.

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