LT3958IUHE

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LT3958IUHE

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IC REG BOOST CUK ADJ 3.3A 36QFN

  • HerstellerAnalog Devices Inc.

  • Herstellerteil #LT3958IUHE

  • Auf Lager4188

365 Tage Qualitätsgarantie

7*24 Stunden-Servicegarantie

90-Tage Kundendienstgarantie

Originalproduktgarantie

Spezifikationen

Attribut Wert
Part Status Obsolete
Function Step-Up, Step-Up/Step-Down
Output Configuration Positive or Negative
Topology Boost, Cuk, Flyback, SEPIC
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 5V
Voltage - Input (Max) 80V
Voltage - Output (Min / Fixed) 1.6V
Voltage - Output (Max) 84V (Switch)
Current - Output 3.3A (Switch)
Frequency - Switching 100kHz ~ 1MHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 36-WFQFN, 28 Leads, Exposed Pad
Supplier Device Package 36-QFN (5x6)
Base Product Number LT3958

Übersicht

Description

The LT3958IUHE is a high-performance DC/DC converter designed by Analog Devices, primarily used for LED driving applications. This device operates as a step-up (boost) converter, capable of delivering a regulated output voltage from a lower input voltage source. It supports a wide input range, typically from 2.5V to 40V, making it suitable for battery-powered systems.
Key features include an integrated high-efficiency power switch, a programmable output current, and a wide range of dimming options, including PWM and analog dimming. The LT3958 is designed to optimize efficiency, reducing thermal stress and extending battery life. Its compact package is ideal for space-constrained applications.
The device also includes protection features, such as thermal shutdown and overvoltage protection, ensuring reliable operation in various environments. Altogether, the LT3958IUHE is an excellent choice for applications requiring efficient LED lighting solutions, such as automotive lighting, architectural lighting, and portable devices.

Equivalent

The LT3958IUHE chip is a high-efficiency LED driver. Equivalent products include the Texas Instruments TPS929120, ON Semiconductor NCL30051, and the Maxim Integrated MAX16834. These alternatives offer similar functionalities for driving LED arrays and achieving high efficiency in various lighting applications. Always check specific requirements, such as voltage and current ratings, to ensure compatibility.

Features

The LT3958IUHE is a high-performance step-up DC/DC converter designed for driving LED strings. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, making it suitable for various power sources.
2. High Efficiency: Provides up to 94% efficiency, reducing heat generation and improving battery life.
3. Constant Current Control: Delivers accurate LED current regulation for consistent brightness.
4. Integrated Switch: Includes a high-side switch to minimize external component count.
5. Adjustable Output Voltage: Capable of generating output voltages up to 60V, accommodating various LED configurations.
6. PWM Dimming: Supports PWM dimming control for flexible brightness adjustment.
7. Programmable Switching Frequency: Allows customization of the switching frequency from 200 kHz to 1 MHz.
8. Protection Features: Includes thermal shutdown and over-voltage protection for enhanced reliability.
The LT3958IUHE is ideal for various LED lighting applications, including automotive, architectural, and general illumination.

Pinout

The LT3958IUHE is a high-performance LED driver from Analog Devices with a total of 20 pins. It is designed for driving high-brightness LEDs with high efficiency. Key functions of the LT3958 include:
1. Constant Current Control: It provides precise constant current control for LED applications.
2. Wide Input Voltage Range: Supports input voltages from 4.5V to 60V.
3. Boost Topology: Can be configured for boost, buck, or buck-boost operations.
4. PWM Dimming: Supports PWM dimming with adjustable frequency.
5. Thermal Protection: Includes thermal shutdown for enhanced reliability.
6. Configurable Output Voltage: Adjustable output voltage to accommodate varying LED configurations.
7. Synchronous Operation: Can operate in synchronous mode for improved efficiency.
Overall, the LT3958IUHE is suitable for various lighting applications, including automotive, architectural, and industrial lighting.

Manufacturer

The LT3958IUHE is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company headquartered in Norwood, Massachusetts, USA. It specializes in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs). The company is known for its innovative products that serve a wide range of industries, including communications, automotive, industrial automation, healthcare, and consumer electronics.
The LT3958 is specifically a high-voltage LED driver designed for various lighting applications, providing features such as constant current control and efficient power management. Analog Devices focuses on creating solutions that enhance performance and efficiency in electronic systems. The company is recognized for its commitment to quality and reliability in the semiconductor industry, making it a key player in the development of advanced technologies.

Application

The LT3958IUHE is a versatile LED driver used in various applications, including automotive lighting, architectural lighting, and general illumination. It supports high-brightness LEDs in both constant current and constant voltage modes, making it suitable for backlighting in displays and signs. Its features, such as high efficiency and the ability to drive multiple LEDs in series, enhance its use in battery-powered devices and portable lighting solutions. Additionally, it can be utilized in industrial applications for task lighting and in outdoor lighting systems, providing robust performance and flexibility in design.

Package

The LT3958IUHE is packaged in a 28-lead TSSOP (Thin Shrink Small Outline Package) with a thermal pad for improved heat dissipation.

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