LT3758MPMSE#PBF

Frequency - Switching:	100kHz ~ 1MHz
Base Part Number:	LT3758
Supplier Device Package:	10-MSOP-EP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Operating Temperature:	-55°C ~ 150°C (TJ)
Control Features:	Enable, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	5.5 V ~ 100 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, SEPIC
Output Configuration:	Positive or Negative, Isolation Capable
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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The LT3758MPMSE#PBF is a voltage regulator within the DC/DC switching controllers product category. It is a highly efficient and flexible supply for controlling two disparate power rails. The LT3758MPMSE#PBF is fitted with three discrete KeyStone™ envelope management schemes that provide higher levels of efficiency at low light, and allow the synchronous buck regulator to manage power consumption differently, depending on the operating conditions. The LT3758MPMSE#PBF is particularly well-suited to applications in the automotive and industrial, field-oriented motor control segments, as well as Point-of-Load (POL) converters in applications such as base stations, mesh and Wi-Fi networks, and telecommunications systems.

The LT3758MPMSE#PBF enables the user to control two independent step-down, synchronous buck regulators for two different power rails. It can also be used as a two-output buck boost regulator. This high performance regulator features extremely low quiescent current and has a wide input voltage range from 4.5 V to 32 V. The LT3758MPMSE#PBF also features both fixed operating frequency and frequency synchronization capability, allowing the user to optimize power efficiency over a wide range of application requirements. Additionally, the LT3758MPMSE#PBF has multiple independent regulation cycles and slew rate control, enabling precise regulation and improved efficiency at light load levels.

The working principle of the LT3758MPMSE#PBF is that of a synchronous buck regulator, where the input and output voltages are controlled by the duty cycle of a switching element, which is driven by an external control signal from a control amplifier or PWM controller. The LT3758MPMSE#PBF features two independent synchronous buck regulators, each with its own feedback circuitry. Each buck regulator operates up to its own fixed frequency, or the user can synchronize the two regulations cycles, allowing both regulators to work at the same frequency. The duty cycle of each switching element is controlled by an output voltage setting pin and then adjusted by the on-chip feedback circuit. The switching element should be selected according to the load requirements, in order to achieve the best efficiency and minimize power losses.

The LT3758MPMSE#PBF incorporates several protection functions, including Thermal Shutdown Protection, Under-Voltage Lockout, Over-Voltage Protection, Input Over-Voltage Protection, and a Fault Output Pin. In addition, the LT3758MPMSE#PBF provides an adjustable slew rate control, allowing the user to set the switching frequency and output current limits, as well as providing an adjustable soft start. This allows the user to tailor the power requirements to the specific application.

The LT3758MPMSE#PBF is easy to use, highly reliable, and provides efficient performance for its intended purpose. Its integrated features make it well-suited for applications in the automotive, industrial, and telecommunications fields, where it can be used to control two different power rails with high efficiency and relative ease. Its efficiency and adaptability make the LT3758MPMSE#PBF a versatile choice for a wide range of applications.

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