LTC7810ILXE#PBF

Voltage - Supply (Vcc/Vdd):	4.5 V ~ 140 V
Supplier Device Package:	48-eLQFP (7x7)
Package / Case:	48-LQFP Exposed Pad
Operating Temperature:	-40°C ~ 125°C
Control Features:	Current Limit, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Frequency - Switching:	105kHz ~ 780kHz
Series:	--
Output Phases:	2
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tray

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Application Field of LTC7810ILXE#PBF

The LTC7810ILXE#PBF DC-DC controller is designed to operate in a wide range of automotive, industrial, and communications applications. This high-efficiency controller operates at 4.5V to 40V input and is capable of supplying output currents up to 10A. In addition, the LTC7810ILXE#PBF has integrated features such as adjustable input current limit, output over-current protection, and internal soft-start. These features make the LTC7810ILXE#PBF ideal for applications in automotive, industrial, and communications systems.

Working Principle of LTC7810ILXE#PBF

The LTC7810ILXE#PBF DC-DC controller is primarily used to control the current through a switching power supply. The LTC7810ILXE#PBF implements an average current mode control For example, the maximum output current may be programmed with a single resistor and inductor current limiting is enabled by setting another resistor. The controller combines an internal voltage reference, ERROR amplifier and high-side current sense circuitry to generate output voltage control. The open loop transfer function is determined by the combination of the current sense amplifier, error amplifier and gain resistor network. The circuit also implements a novel foldback current limitation, which limits output current during overload and short-circuit conditions.Furthermore, the LTC7810ILXE#PBF can also be used to generate a constant supply voltage from a varying input voltage. The controller includes a digitally adjustable input under-voltage protection and programmable output voltage. As the input voltage goes below the under-voltage limit, the controller will reduce the output voltage, thus providing protection from damage to the system by preventing large inrush current. In addition, PWM regulation is included in the device, which allows alternately switching current through the output device or devices, to maintain the output voltage at the desired level. During a power on reset, the PWM is used to hard-start the output and is then quickly disabled. The device also includes programmable soft-start to avoid coil or output device failure by avoiding initial inrush current after power on reset.

Conclusion

The LTC7810ILXE#PBF DC-DC controller is an excellent choice for applications in automotive, industrial, and communications systems for its range of features and efficiency. The programmable features and wide operating range make this controller suitable for a variety of applications. With its excellent performance and integration of features, the LTC7810ILXE#PBF is the ideal choice for automotive, industrial, and communications applications.

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