LTC3862HGN-2

Voltage - Supply (Vcc/Vdd):	5.5 V ~ 36 V
Supplier Device Package:	24-SSOP
Package / Case:	24-SSOP (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	Enable, Frequency Control, Phase Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	96%
Frequency - Switching:	75kHz ~ 500kHz
Series:	--
Output Phases:	2
Number of Outputs:	2
Topology:	Boost, SEPIC
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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Introduction

PMIC, or Power Management Integrated Circuit, is a type of integrated circuit (IC) designed to handle the power management of a device. Voltage Regulators are responsible for regulating the voltage of a device, and the DC DC Switching Controller is the heart of a PMIC. The LTC3862HGN-2 is a DC DC Switching Controller designed to provide fast, efficient, and reliable step-up and step-down power conversions.

Features of LTC3862HGN-2

The LTC3862HGN-2 has a range of features that make it an ideal DC DC Switching Controller. It features a wide input voltage range, up to 74V, and an operating temperature range of -40В°C to +125В°C. Additionally, the LTC3862HGN-2 supports a range of output voltage ranges, from 0.8V up to 65V, making it suitable for a variety of Step-Up and Step-Down applications.

Application Fields of LTC3862HGN-2

The LTC3862HGN-2 is designed for a wide range of Step-Up and Step-Down applications, including: handheld devices, industrial equipment, medical, automotive, and telecommunications applications. Furthermore, the LTC3862HGN-2 is designed for both synchronization and non-synchronization applications, and features many protection features, such as cycle-by-cycle current limit, overtemperature shutdown, and output short-circuit protection.

Working Principle

The LTC3862HGN-2 is a DC DC Switching Controller that enables efficient power conversion by regulating the transfer of power between two sources. The controller utilizes a control loop feedback mechanism and a pair of external MOSFETs to regulate the current and voltage at the output.The LTC3862HGN-2 features a PWM (Pulse Width Modulation) control loop with a current-mode approach. This type of control is well suited for high power applications because it regulates the amount of current that is delivered to the output of the device. When the output voltage is below the desired level, the controller increases the pulse-width of the PWM signal, and conversely, it reduces the pulse-width of the signal when the output voltage is above the desired level. Additionally, the LTC3862HGN-2 features a synchronous rectification feature that enables the external MOSFETS to be switched on and off in a controlled manner. This allows the controller to switch off the MOSFETs at times when it is not required, thereby improving the efficiency of the system.The LTC3862HGN-2 also features current limit protection, which limits the maximum current that can be drawn from the system at any given point in time, preventing damage to the components. Additionally, the LTC3862HGN-2 also has thermal protection, allowing the system to shut down in the event of excessive heating.

Conclusion

The LTC3862HGN-2 is an ideal DC DC switching controller for a variety of Step-Up and Step-Down applications. It features a wide input voltage range and a temperature operating range of -40В°C to +125В°C. Additionally, the LTC3862HGN-2 supports a range of output voltage ranges, from 0.8V up to 65V, making it suitable for a variety of applications. It features a current mode PWM control loop and synchronous rectification feature, providing fast, efficient, and reliable power conversions. It also features protection features such as cycle-by-cycle current limit, overtemperature shutdown, and output short-circuit protection.

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