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LT3743EFE

Name: LT3743EFE
Rating: 4.7 (12 reviews)

IC LED DRVR CTRL PWM 20A 28TSSOP

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仕様

Part Status	Obsolete
Type	DC DC Controller
Topology	Step-Down (Buck)
Internal Switch(s)	No
Number of Outputs	1
Voltage - Supply (Min)	6V
Voltage - Supply (Max)	36V
Frequency	200kHz ~ 1MHz
Dimming	PWM
Applications	Lighting
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package	28-TSSOP-EP
Base Product Number	LT3743

概要

Description

The LT3743EFE is a high-performance, synchronous step-down (buck) regulator designed by Analog Devices (formerly Linear Technology). It is optimized for high efficiency and can deliver up to 3A of output current with a wide input voltage range of 4V to 60V. This IC features a built-in switch, simplifying design and reducing the number of external components needed.
Key features include adjustable output voltage, low quiescent current, and various protection mechanisms such as overcurrent protection, thermal shutdown, and under-voltage lockout. The LT3743EFE employs a constant frequency, current-mode control architecture for stable operation and fast transient response.
Applications typically include industrial power supplies, automotive systems, and other high-voltage battery-operated devices. Its compact size and efficient performance make it suitable for space-constrained designs. The device also supports a wide range of output capacitors, allowing flexibility in component selection.

Features

The LT3743EFE is a high-speed, dual-channel, synchronous step-down DC/DC converter designed for high efficiency and compact size. Key features include:
1. Input Voltage Range: Supports 4.5V to 60V, suitable for a variety of applications.
2. Output Current: Capable of delivering up to 3A per channel.
3. Efficiency: High efficiency across a wide load range, minimizing heat generation.
4. Switching Frequency: Adjustable frequency up to 1MHz, allowing for smaller external components.
5. Dual-Channel: Operates as two independent converters or can be configured for higher output current.
6. Power Good Indicator: Provides output voltage monitoring for system reliability.
7. Thermal Protection: Features thermal shutdown to prevent damage from overheating.
8. Compact Package: Available in a thermally enhanced 28-lead TSSOP package, ideal for space-constrained designs.
Overall, the LT3743EFE is well-suited for applications requiring efficient power management with a compact footprint.

Package

The LT3743EFE is offered in a 16-lead TSSOP (Thin Shrink Small Outline Package) package type.

Pinout

The LT3743EFE is a high-performance, synchronous boost converter from Analog Devices with a pin count of 20. Its primary functions include converting low input voltages to higher output voltages, making it suitable for applications like battery-powered devices and LED driving.
Key features include:
1. Boost Conversion: It efficiently steps up voltage.
2. Integrated Switches: It has built-in power MOSFETs to reduce external component count.
3. High Efficiency: Designed for high efficiency across a range of loads.
4. Adjustable Output Voltage: The output voltage can be set using external resistors.
5. Current Limit Protection: Includes features to protect against overcurrent conditions.
The pin configuration includes connections for power input, output, ground, feedback, compensation, and control signals, allowing for flexibility in design and integration into various applications. For detailed pin functions, please refer to the manufacturer's datasheet.

Manufacturer

The LT3743EFE is manufactured by Analog Devices, Inc. (ADI), a global leader in the design and production of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, ADI serves a diverse range of industries, including telecommunications, automotive, healthcare, and industrial automation. The company is known for its high-performance solutions that enable precise signal processing and data conversion, making it a key player in the semiconductor market. ADI focuses on innovation and quality, providing products that enhance the performance of electronic systems.

Application

The LT3743EFE is a high-performance boost converter primarily used in applications requiring efficient power conversion, such as LED drivers, battery management systems, and portable devices. Its features enable it to handle high input voltages and provide stable output currents, making it suitable for applications in automotive lighting, industrial power supplies, and energy harvesting systems.

Equivalent

The LT3743EFE is a high-voltage, high-efficiency step-up (boost) DC-DC converter. Equivalent products include the TPS61040 from Texas Instruments, the MIC22715 from Microchip, and the MAX757 from Maxim Integrated. These alternatives offer similar functionalities for boost conversion, but check specifications for voltage and current ratings to ensure compatibility with your application.