LT3790EFE#TRPBF

Frequency - Switching:	200kHz ~ 700kHz
Base Part Number:	LT3790
Supplier Device Package:	38-TSSOP-EP
Package / Case:	38-TFSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	4.7 V ~ 60 V
Output Phases:	2
Number of Outputs:	2
Topology:	Buck-Boost
Output Configuration:	Positive
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LT3790EFE#TRPBF Application Field and Working Principle

The LT3790EFE#TRPBF has been designed to drive external switching elements to achieve efficient power conversion. The device is ideal for applications such as flat panel TVs, cable modems, game console power supplies, advanced LED drivers and other applications that require extremely low voltage drop during standby mode. The device is available in an 8-lead MSOP (1.4 mm height) package with a built-in thermistor for reliable thermal protection, and is certified to the EN 60950-1 safety standard.

Applications

The LT3790EFE#TRPBF is intended for use in a wide range of applications where a regulated power supply is required. Some of the most popular applications for this device are:

• Flat Panel TVs
• Cable Modems
• Game Console Power Supplies
• Advanced LED Drivers
• Standby Power Supplies
• Remote Sensors
• White Goods
• Medical Applications

Features

The LT3790EFE#TRPBF offers a wide range of features to help customers with their power conversion needs. These features include:

• Optimized power efficiency
• Low voltage drop in standby mode
• Programmable current limit
• Built-in thermal protection
• EN 60950-1 and JEDEC SW-325 safety certification for consumer electronics applications
• High switching frequency (up to 1MHz)
• Programmable over-voltage and under-voltage protection
• Programmable over-current protection
• Selectable input current limit

Working Principle

The LT3790EFE#TRPBF is a DC-DC switching controller that can drive external switching elements to produce an efficient power supply. The device uses a variable frequency and variable width pulse width modulation (PWM) technique for power conversion. In operation, the LT3790EFE#TRPBF takes the input voltage and regulates it to the desired output voltage, then outputting a pulse width modulated (PWM) signal which is used to drive an external power transistor to produce the desired output voltage.The LT3790EFE#TRPBF features a built-in current limit circuit which prevents excessive current flow by limiting the time the device can stay in the on state. The device can also be programmed to automatically reduce the PWM duty cycle when the output voltage falls below a predetermined threshold, or when the input voltage is too low.The device also offers built-in over-voltage and under-voltage protection, over-current protection, and thermal protection. All of these features help to ensure that the device is safe and reliable in operation.

Conclusion

The LT3790EFE#TRPBF is an advanced DC-DC switching controller designed to provide efficient power conversion for a wide range of applications. The device offers a wide range of features, including optimized power efficiency, low voltage drop in stand by mode, programmable current limit, built-in thermal protection, over-voltage and under-voltage protection, and selectable input current limit. The device also meets the EN 60950-1 and JEDEC SW-325 safety standards, ensuring reliable and safe operation.

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