Datasheet > LT3496IUFD-TRPBF

LT3496IUFD-TRPBF

更新时间： 2024-11-04 05:43:31

品牌	Logo	应用领域
凌特 - Linear		驱动器
页数	文件大小	规格书
20页	258K
描述
Triple Output LED Driver

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中文翻译

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LT3496IUFD-TRPBF 数据手册

LT3496

Triple Output LED Driver

FEATURES

DESCRIPTION

The LT^®3496 is a triple output DC/DC converter designed

to operate as a constant-current source and is ideal for

driving LEDs. The LT3496 works in buck, boost or buck-

boost mode. The LT3496 uses a ﬁxed frequency, current

mode architecture resulting in stable operation over a

wide range of supply and output voltages. A frequency

adjust pin allows the user to program switching frequency

between 330kHz and 2.1MHz to optimize efﬁciency and

external component size.

True Color PWM™ Dimming Delivers Up to 3000:1

Dimming Ratio

Built-In Gate Driver for PMOS LED Disconnect

Three Independent Driver Channels with 750mA,

45V Internal Switches

Operates in Buck, Boost, Buck-Boost Modes

CTRL Pin Accurately Sets LED Current Sense

Threshold Over a Range of 10mV to 100mV

Adjustable Frequency: 330kHz to 2.1MHz

Open LED Protection

Wide Input Voltage Range:

The LT3496 supports 3000:1 dimming control on each

channel. Each of the three regulators is independently

operated by that channel’s PWM signal. The PWM feature

allows precise adjustment of the color mixing or dimming

ratio of the LED source. Each of the three channels has

a built-in gate driver to drive an external LED-disconnect

P-channel MOSFET, allowing high dimming range. The

output current range of each channel of the LT3496 is

programmed with an external sense resistor.

Operation from 3V to 30V

Transient Protection to 40V

Surface Mount Components

28-Lead (4mm × 5mm) QFN and TSSOP Packages

APPLICATIONS

RGB Lighting

Billboards and Large Displays

The CTRL pin is used to adjust the LED current either for

analog dimming or overtemperature protection.

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other

trademarks are the property of their respective owners. Protected by U.S. Patents, including

7199560, 7321203, and others pending.

Automotive and Avionic Lighting

Constant-Current Sources

TYPICAL APPLICATION

High Dimming Ratio Triple Output LED Power Supply

42V

1μF

CAP1

200mΩ

LED1

CAP2

200mΩ

LED2

CAP3

200mΩ

LED3

3000:1 PWM Dimming at 120Hz

TG1

TG2

TG3

PWM

5V/DIV

7 LEDs

0.5A

0.47μF

0.47μF 0.47μF

0.5A/DIV

LED

0.5A/DIV

18μH

3496 TA01b

0.5μs/DIV

SW1

CAP1-3

LED1-3

SW2

SW3

TG1-3

VC1-3

REF

22k

470pF

LT3496

GND

CTRL1-3

FADJ

OVP1-3

3V TO 24V

PWM1-3

SHDN

PWM1-3

SHDN

1μF

3496 TA01a

3496fe

12 3 4 5 6 7...20

中文翻译

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与LT3496IUFD-TRPBF相关器件

型号	品牌	获取价格	描述	数据表
LT3497	Linear Systems	获取价格	Dual Full Function White LED Driver with Integrated Schottky Diodes
LT3497	Linear	获取价格	20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
LT3497	ADI	获取价格	具有集成肖特基二极管的双通道全功能白光 LED 驱动器
LT3497EDDB	Linear Systems	获取价格	Dual Full Function White LED Driver with Integrated Schottky Diodes
LT3497EDDB#TR	Linear	获取价格	IC LED DISPLAY DRIVER, PDSO10, 3 X 2 MM, PLASTIC, MO-229WECD-1, DFN-10, Display Driver
LT3497EDDB#TRPBF	Linear	获取价格	LT3497 - Dual Full Function White LED Driver with Integrated Schottky Diodes; Package: DFN
LT3497EDDBTRMPBF	Linear	获取价格	暂无描述
LT3498	Linear	获取价格	20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
LT3498	ADI	获取价格	采用 3mm x 2mm DFN 封装、具集成肖特基二极管的 20mA LED 驱动器和
LT3498EDDB	Linear	获取价格	20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN

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