Datasheet > LT3518

LT3518

更新时间： 2024-11-26 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		开关驱动驱动器
页数	文件大小	规格书
20页	454K
描述
具 2.3A 开关电流的全功能 LED 驱动器

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中文翻译

获取价格

数据手册

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LT3518 数据手册

LT3518

Full-Featured LED Driver

with 2.3A Switch Current

Features

Description

The LT^®3518 is a current mode DC/DC converter with an

internal 2.3A, 45V switch specifically designed to drive

LEDs. The LT3518 operates as a LED driver in boost, buck

mode and buck-boost mode. It combines a traditional

voltage loop and a unique current loop to operate as a

constant-current source or constant-voltage source. Pro-

grammableswitchingfrequencyallowsoptimizationofthe

externalcomponentsforefficiencyorcomponentsize.The

switching frequency of the LT3518 can be synchronized

to an external clock signal. The LED current is externally

programmable with a 100mV sense resistor. The external

PWM input provides 3000:1 LED dimming. The CTRL pin

provides further 10:1 dimming ratio.

3000:1 True Color PWM™ Dimming Ratio

2.3A, 45V Internal Switch

100mV High Side Current Sense

Open LED Protection

Adjustable Frequency: 250kHz to 2.5MHz

Wide Input Voltage Range:

Operation from 3V to 30V

Transient Protection to 40V

Operates in Boost, Buck Mode and Buck-Boost Mode

Gate Driver for PMOS LED Disconnect

Constant-Current and Constant-Voltage Regulation

CTRL Pin Provides 10:1 Analog Dimming

Low Shutdown Current: <1µA

Available in (4mm × 4mm) 16-Lead QFN and 16-Pin

TSSOP Packages

The LT3518 is available in the tiny footprint 16-lead QFN

(4mm×4mm)andthe16-pinTSSOPpackage.TheLT3518

provides a complete solution for both constant-voltage

and constant-current applications.

L, LT, LTC and LTM are registered trademarks and True Color PWM is a trademark of Analog

Devices Inc. All other trademarks are the property of their respective owners. Protected by U.S.

Patents, including 7199560, 7321203, 7746300. Patent Pending.

applications

Display Backlighting

Automotive and Avionic Lighting

Illumination

Scanners

typical application

Efficiency

1.5A Buck Mode LED Driver

100

CTRL = V

REF

10µF

68mΩ

24V

2.2µF

1.5A

15µH

ISP

ISN TG

3.3V

2.2µF

SHDN

LT3518

CTRL

PWM

REF

PWM

SYNC

100

TGEN V

VC GND

REF

PWM DUTY CYCLE (%)

16.9k

1MHz

0.1µF

3518 TA01b

0.1µF

3518 TA01a

3518ff

For more information www.linear.com/LT3518

12 3 4 5 6 7...20

中文翻译

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与LT3518相关器件

型号	品牌	获取价格	描述	数据表
LT3518_15	Linear	获取价格	Full-Featured LED Driver with 2.3A Switch Current
LT3518EFE	Linear	获取价格	LT3518 - Full-Featured LED Driver with 2.3A Switch Current; Package: TSSOP; Pins: 16; Temp
LT3518EFE#PBF	Linear	获取价格	LT3518 - Full-Featured LED Driver with 2.3A Switch Current; Package: TSSOP; Pins: 16; Temp
LT3518EFE#TRPBF	Linear	获取价格	LT3518 - Full-Featured LED Driver with 2.3A Switch Current; Package: TSSOP; Pins: 16; Temp
LT3518EFE-PBF	Linear	获取价格	Full-Featured LED Driver with 2.3A Switch Current
LT3518EFE-TRPBF	Linear	获取价格	Full-Featured LED Driver with 2.3A Switch Current
LT3518EUF	Linear	获取价格	Full-Featured LED Driver with 2.3A Switch Current
LT3518EUF#PBF	Linear	获取价格	LT3518 - Full-Featured LED Driver with 2.3A Switch Current; Package: QFN; Pins: 16; Temper
LT3518EUF#TRPBF	Linear	获取价格	LT3518 - Full-Featured LED Driver with 2.3A Switch Current; Package: QFN; Pins: 16; Temper
LT3518EUF-PBF	Linear	获取价格	Full-Featured LED Driver with 2.3A Switch Current

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