LT3743EFE

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LT3743EFE

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IC LED DRVR CTRL PWM 20A 28TSSOP

  • Nhà sản xuấtCông ty Analog Devices Inc.

  • Ông. Phần #LT3743EFE

  • Có sẵn2038

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Thông số kỹ thuật

thuộc tính Giá trị
PartStatus Obsolete
Type DC DC Controller
Topology Step-Down (Buck)
InternalSwitch(s) No
NumberofOutputs 1
Voltage-Supply(Min) 6V
Voltage-Supply(Max) 36V
Frequency 200kHz ~ 1MHz
Dimming PWM
Applications Lighting
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
SupplierDevicePackage 28-TSSOP-EP
BaseProductNumber LT3743

Tổng quan

Description

The LT3743EFE is a high-performance, synchronous step-down (buck) DC-DC converter designed by Analog Devices. It features a wide input voltage range, typically from 4.5V to 60V, making it suitable for various applications, including industrial and automotive power systems. The device can deliver high output currents with excellent efficiency, thanks to its integrated power switches and advanced control architecture.
Key features include adjustable output voltage, built-in overcurrent protection, thermal shutdown, and frequency synchronization capabilities. The LT3743EFE also supports a wide range of external components, allowing designers to customize their power solutions.
Its compact package and ease of use make it ideal for applications requiring high reliability and performance in space-constrained designs. Overall, the LT3743EFE is a versatile choice for engineers looking to implement efficient power management solutions in demanding environments.

Equivalent

The LT3743EFE is a high-performance step-up DC/DC converter. Equivalent products include the TPS61030 from Texas Instruments, the LTC3780 from Analog Devices, and the MAX8561 from Maxim Integrated. Each of these alternatives offers similar functionality for boosting voltage in various applications. It's important to consider specific requirements like output current, efficiency, and features when selecting an equivalent product.

Features

The LT3743EFE is a high-performance, high-voltage synchronous step-down regulator designed for efficient power conversion. Key features include:
1. Input Voltage Range: Operates from 4.5V to 60V, accommodating various applications.
2. Output Current: Supports up to 3A output current, making it suitable for demanding loads.
3. High Efficiency: Achieves efficiencies over 95% due to its synchronous architecture, reducing heat generation.
4. Fixed or Adjustable Output Voltage: Offers flexibility with a fixed output voltage option or adjustable voltage using external feedback resistors.
5. Integrated Switches: Includes high-side and low-side MOSFETs, minimizing external component count and enhancing reliability.
6. Fault Protection: Features overvoltage, overcurrent, and thermal shutdown protection for safe operation.
7. Switching Frequency: Operates at a programmable frequency, allowing optimization for specific applications.
8. Soft-Start Function: Reduces inrush current during startup, improving system stability.
Overall, the LT3743EFE is ideal for applications requiring robust performance in compact designs.

Pinout

The LT3743EFE is a high-voltage, step-down (buck) DC-DC controller designed for LED drivers and other power applications. It features a 32-pin LQFP package.
Key functions of the LT3743EFE include:
1. Buck Converter Operation: It provides a regulated output voltage from a higher input voltage.
2. Current Control: It offers constant current output for driving LEDs.
3. Wide Input Voltage Range: It supports a wide input voltage range suitable for various applications.
4. PWM Dimming Capability: It allows for brightness control via pulse-width modulation.
5. Thermal Shutdown and Over-Voltage Protection: Built-in protection features to ensure reliable operation.
The pin configuration supports connections for power input, output, feedback, compensation, and control signals, facilitating integration in complex systems.
For precise pin assignments and detailed operational characteristics, refer to the LT3743EFE datasheet.

Manufacturer

The LT3743EFE is manufactured by Analog Devices, Inc. Analog Devices is a global company that specializes in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, the company is headquartered in Norwood, Massachusetts.
Analog Devices focuses on various sectors, including communications, automotive, industrial, and consumer markets. Their products are widely used in applications such as signal processing, data conversion, and power management. The LT3743EFE specifically is a high-voltage, step-down (buck) DC-DC converter known for its efficiency and capability to deliver high output current, making it suitable for a range of applications, particularly in power supplies for various electronic devices.
Overall, Analog Devices is recognized for its innovation in the semiconductor industry, providing solutions that enable advancements in technology across multiple fields.

Application

The LT3743EFE is a versatile high-voltage, high-speed comparator primarily used in applications such as over-voltage protection, under-voltage detection, and fault monitoring in power supplies. Its fast response time makes it suitable for automotive systems, battery management, and industrial control applications. Additionally, it can be employed in switching power supplies for feedback control, as well as in signal conditioning and level shifting tasks in various electronics. Its high common-mode input range also allows for integration in advanced communication systems and precision instrumentation.

Package

The LT3743EFE is packaged in a 32-lead LQFP (Low-Profile Quad Flat Package) with exposed pad for improved thermal performance.

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