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LT3474EFE#PBF

Name: LT3474EFE#PBF
Rating: 4.7 (12 reviews)

IC LED DRVR RGLTR PWM 1A 16TSSOP

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Mfr.부분 #LT3474EFE#PBF
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데이터시트 LT3474EFE#PBF DataSheet
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사양

Part Status	Active
Type	DC DC Regulator
Topology	Step-Down (Buck)
Internal Switch(s)	Yes
Number of Outputs	1
Voltage - Supply (Min)	3.5V
Voltage - Supply (Max)	36V
Current - Output / Channel	1A
Frequency	200kHz ~ 2MHz
Dimming	PWM
Applications	Backlight
Operating Temperature	-40°C ~ 85°C (TA)
Grade	Automotive
Mounting Type	Surface Mount
Package / Case	16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package	16-TSSOP-EP
Base Product Number	LT3474

개요

Description

The LT3474EFE#PBF is a high-performance LED driver from Linear Technology, designed for driving multiple LEDs in various applications. It features a step-down (buck) configuration, allowing it to efficiently convert higher input voltages down to the desired LED forward voltage. Key specifications include a wide input voltage range, typically from 4.5V to 60V, and the ability to drive up to 2A of output current.
The device includes features such as a built-in power switch, high efficiency, and the capability to handle both constant current and constant voltage modes. It supports dimming control through PWM or analog methods, making it versatile for applications like automotive lighting, architectural lighting, and general illumination.
The LT3474 is also known for its thermal management capabilities and can operate in a wide range of environmental conditions. Overall, it's a robust solution for LED driving, combining efficiency with flexibility for various design needs.

Features

The LT3474EFE#PBF is a high-efficiency, step-up (boost) DC/DC converter designed for applications requiring a compact power solution. Key features include:
1. Output Voltage Range: It can generate output voltages up to 34V, making it suitable for powering various high-voltage devices.
2. Efficiency: Offers high efficiency (up to 95%), which minimizes heat generation and enhances battery life in portable applications.
3. Input Voltage Range: Operates from a wide input voltage range of 2.5V to 16V, allowing it to work with multiple power sources.
4. Load Current: Capable of delivering up to 1A of output current.
5. Frequency: Operates at a fixed switching frequency of 1.2MHz, allowing for smaller external components.
6. Soft-Start Feature: Minimizes inrush current at startup, protecting sensitive components.
7. Fault Protection: Includes features like thermal protection and current limit to prevent damage.
The LT3474EFE#PBF is ideal for battery-powered devices, LED drivers, and other high-voltage applications.

Package

The LT3474EFE#PBF is packaged in a TSSOP (Thin Shrink Small Outline Package) with a 16-lead configuration.

Pinout

The LT3474EFE#PBF is a power management IC with a pin count of 32. It is primarily designed for high-efficiency LED driver applications.
### Key Functions:
- Input Voltage Range: Supports a wide input voltage range suitable for battery-powered and industrial applications.
- Buck Regulator: Implements a step-down (buck) converter to drive LEDs with high efficiency.
- Multiple Outputs: Capable of driving multiple LED strings with varying current requirements.
- Dimming Control: Includes features for PWM and analog dimming for flexible LED brightness control.
- Fault Protection: Provides features like overcurrent protection, thermal shutdown, and open circuit detection.
- Programmable Settings: Allows customization of settings like switching frequency and output current.
These functions make the LT3474EFE#PBF ideal for automotive and general lighting applications.

Manufacturer

The LT3474EFE#PBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational company that specializes in designing and manufacturing analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965 and headquartered in Norwood, Massachusetts, Analog Devices serves a wide range of industries, including automotive, telecommunications, consumer electronics, healthcare, and industrial automation. The company is well-known for its high-performance analog and mixed-signal technology, which is critical for applications such as data conversion, signal conditioning, and power management.

Application

The LT3474EFE#PBF is a high-efficiency LED driver primarily used in applications such as automotive lighting, backlighting for displays, and general-purpose LED illumination. Its compact design also makes it suitable for portable devices and battery-powered applications. Additionally, it can be utilized in architectural lighting and signage, providing flexible dimming capabilities and high output current support.

Equivalent

The LT3474EFE#PBF is a buck-boost DC-DC converter. Equivalent products include the Texas Instruments TPS63070, Analog Devices ADM6600, and Maxim Integrated MAX757. Ensure to compare specifications such as input/output voltage range, current rating, and efficiency for compatibility in your application.