LT3507EUHF#PBF

Voltage/Current - Output 3:	0.8 V ~ 32.4 V, 1.5A
Base Part Number:	LT3507
Supplier Device Package:	38-QFN (5x7)
Package / Case:	38-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	4 V ~ 36 V
w/Sequencer:	Yes
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	0.8 V ~ 32.4 V, 1.5A
Voltage/Current - Output 1:	0.8 V ~ 32.4 V, 2.4A
Frequency - Switching:	900kHz ~ 1.1MHz
Number of Outputs:	4
Function:	Any Function
Topology:	Step-Down (Buck) (1), Linear (LDO) (1)
Part Status:	Active
Packaging:	Tube

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LT3507EUHF#PBF Application Field and Working Principle

The LT3507EUHF#PBF is a linear and switching voltage regulator designed to provide the most efficient power solution in any application. The LT3507EUHF#PBF is a compact, high-efficiency, microprocessor-controlled solution that addresses the most challenging power management needs. It caters to an extremely wide input voltage range, making it suitable for use in distributed power systems. It utilizes advanced power technology to avoid overvoltage conditions and provide precise, reliable voltage regulation over a wide range of operating conditions.

Application Field

Linear and Switching regulators are widely used in many applications such as computing, communications, industrial, renewable energy, consumer electronics, and automotive. The LT3507EUHF#PBF is ideally suited for applications that require high-efficiency and precise voltage regulation. In addition, its wide input voltage range from 8V to 60 V makes it suitable for power systems where the voltage can vary significantly due to changes in the load or operating environment.

Features

The LT3507EUHF#PBF features an easy-to-use and easy-to-program microcontroller interface. It is designed with a wide selection of power device options (MOSFET, TFT, etc) and provides an adjustable output voltage range up to 60V. It also features an active power limiter, current sense amplifier, PFC control, and programmable reference voltage. The provided thermal protection provides additional safety in case of an over-temperature situation.

Working Principle

The LT3507EUHF#PBF uses its microcontroller-controlled architecture to regulate output voltage. The microcontroller uses sensor input to generate a proportional control to the power devices for efficient voltage regulation. The internal PFC circuit helps to limit input current and improve overall efficiency. It also keeps the voltage ripple on the input side low, improving overall performance. On the output side, the microcontroller adjusts the output voltage based on the feedback from the sense amplifier. This ensures that the output voltage stays within desired limits. The internal Current Sense Amplifier is responsible for sensing the output voltage. It is connected to the transistor to measure the output voltage by monitoring the collector current. The captured signal is then amplified and monitored by the microcontroller to generate a reference voltage. This reference voltage is then used to control the output voltage by the microcontroller-controlled circuit.The LT3507EUHF#PBF also features a wide selection of power devices to provide high-efficiency power conversion. It features an active power limiter that not only limits the maximum output current but also ensures that the output voltage stays within the desired range. Also, this voltage regulator has a programmable reference voltage that allows the user to tailor the output voltage to the specific application needs.

Summary

The LT3507EUHF#PBF is an advanced voltage regulator designed for high-efficiency and precise voltage regulation in a wide range of applications. Its wide input voltage range and selection of power devices make it a suitable choice for use in distributed power systems. The microcontroller-controlled architecture and active power limiter provide efficient and programmable voltage regulation. It also features a current sense amplifier and programmable reference voltage for further optimization. The thermal protection provides added safety for applications, making the device suitable for a wide range of applications.

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