LT3782AEFE

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LT3782AEFE

IC REGULATOR

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規格

Package Tube
ProductStatus Obsolete
OutputType Transistor Driver
Function Step-Up
OutputConfiguration Positive
Topology Boost
NumberofOutputs 2
OutputPhases 2
Voltage-Supply(Vcc/Vdd) 6V ~ 40V
Frequency-Switching 154kHz ~ 465kHz
DutyCycle(Max) 94%
SynchronousRectifier Yes
ClockSync Yes
ControlFeatures Enable, Frequency Control, Reset, Soft Start
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case 28-TSSOP (0.173, 4.40mm Width) Exposed Pad

概述

Description

The LT3782AEFE is a high-performance, dual-output switching regulator controller from Analog Devices, designed to manage power efficiently in various electronic applications. It operates in a wide input voltage range and is particularly useful for step-up (boost) applications. The device features a fixed operating frequency and high efficiency due to its synchronous switching architecture.
It supports both current-mode and voltage-mode control, offering versatility in design and application. This regulator is also equipped with features like soft-start, short-circuit protection, and adjustable switching frequency, enhancing reliability and flexibility. Its compact form factor makes it suitable for space-constrained applications.
The LT3782AEFE is typically used in applications requiring stable power output under varying load conditions, such as battery-powered devices, telecommunications, and industrial equipment. It is known for its robustness and ability to deliver precise output voltages, which is critical for maintaining the performance and longevity of sensitive electronic components.

Features

The LT3782AEFE is a high-performance DC/DC controller designed for use in power supply applications. Key features of the LT3782AEFE include:
1. Synchronous Switching: Features synchronous rectification to improve efficiency and reduce power loss.
2. Wide Input Voltage Range: Capable of operating over a broad input voltage range, making it versatile for various applications.
3. Current Mode Control: Utilizes current mode control for fast transient response and easy loop compensation.
4. High Frequency Operation: Supports high switching frequencies, allowing for the use of smaller external components and compact designs.
5. Programmable Switching Frequency: The switching frequency can be set externally, providing flexibility in design.
6. Integrated Protection Features: Includes overvoltage, undervoltage, overcurrent, and overtemperature protection to enhance reliability and safety.
7. Soft-Start Capability: Features programmable soft-start to limit inrush current during startup.
8. Low Shutdown Current: Offers low quiescent current in shutdown mode, improving energy efficiency in battery-operated devices.
9. Package Type: Available in a thermally enhanced package to support high power applications.
These features make the LT3782AEFE suitable for a wide range of high-density power supply designs in various industrial and consumer electronics applications.

Package

The LT3782AEFE is typically housed in a TSSOP (Thin Shrink Small Outline Package) with Exposed Pad, specifically a 28-lead TSSOP with enhanced thermal performance.

Pinout

The LT3782AEFE is a high performance, DC/DC controller designed by Analog Devices (formerly Linear Technology) for driving LEDs and other loads. It is typically used in boost, SEPIC, flyback, and inverting converter applications.
The LT3782AEFE comes in a 20-pin TSSOP (Thin Shrink Small Outline Package) with an exposed pad for better thermal performance. Here is a brief overview of its pin functions:
1. VCC – Supply voltage for the chip.
2. GND – Ground connection.
3. VIN – Input voltage for the controller.
4. SS – Soft-start control.
5. COMP – Compensation pin for stability.
6. FB – Feedback pin for output voltage regulation.
7. RSET – Frequency set pin.
8. RT – Timing resistor pin.
9. SYNC – Synchronization input.
10. ILIM – Current limit set.
11. SGND – Signal ground.
12. PGND – Power ground.
13. SW – Switch node for the power switch.
14. BST – Bootstrap capacitor connection.
15. TG – Top gate driver output.
16. BG – Bottom gate driver output.
17. SENSE+ – Positive current sense input.
18. SENSE- – Negative current sense input.
19. VOUT – Output voltage sense.
20. FAULT – Fault indicator output.
This concise description provides a quick overview of its pin count and functionality.

Manufacturer

The LT3782AEFE is manufactured by Analog Devices, Inc., which is an American multinational semiconductor company. Analog Devices specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in electronic equipment. The company serves a wide range of industries, including communications, healthcare, automotive, industrial, and consumer electronics, providing essential components for signal processing and power management.

Application

The LT3782AEFE is a high-performance dual-output DC/DC controller designed for various power management applications. It is commonly used in areas such as LED lighting, battery-powered systems, telecommunications, industrial power supplies, and automotive electronics. The controller's efficiency and flexibility make it suitable for applications requiring precise voltage regulation and efficient power conversion, including step-up, step-down, and inverting power supply configurations.

Equivalent

The LT3782AEFE is a high-performance, high-voltage DC-DC controller. Equivalent products could include similar DC-DC controllers from other manufacturers, such as the Texas Instruments LM5122, the Analog Devices LTC3786, or the Maxim Integrated MAX17599. These alternatives offer similar functionality but may differ in specifications like input voltage range, output current capability, or feature sets. Always verify compatibility with your specific application requirements.

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