Datasheet > LT3466-1

LT3466-1

更新时间： 2024-11-05 14:58:27

品牌	Logo	应用领域
亚德诺 - ADI		驱动驱动器转换器
页数	文件大小	规格书
20页	409K
描述
采用 3mm x 3mm DFN 封装的白光 LED 驱动器和升压型转换器

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中文翻译

获取价格

数据手册

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LT3466-1 数据手册

LT3466-1

White LED Driver and Boost

Converter in 3mm × 3mm

DFN Package

FEATURES

DESCRIPTIO

LT^®3466-1 is a dual switching regulator that combines a

white LED driver and a boost converter in a low profile,

small footprint (3mm × 3mm × 0.75mm) DFN package.

The LED driver can be configured to drive up to 10 White

LEDs in series and the boost converter can be used for

generating the LCD bias voltages or driving a secondary

OLED display. Series connection of the LEDs provides

identical LED currents resulting in uniform brightness and

eliminating the need for ballast resistors and expensive

factory calibration.

■

Drives Up to 10 White LEDs from a 3.6V Supply

■

Two Independent Step-Up DC/DC Converters

■

Independent Dimming and Shutdown Control

of the Outputs

■

±1.5% Output Voltage Accuracy (Boost Converter)

■

±4% LED Current Programming Accuracy

■

Internal Schottky Diodes

■

Internal Soft-Start Eliminates Inrush Current

■

Output Overvoltage Protection (39.5V Max V_OUT

Fixed Frequency Operation Up to 2MHz

83% Efficiency Driving 8 White LEDs at 15mA

from a 3.6V Supply

)

■

The LT3466-1 provides independent dimming and shut-

down control of the two converters. The operating fre-

quency can be set with an external resistor over a 200kHz

to2MHzrange.ThewhiteLEDdriverfeaturesalow200mV

reference, thereby minimizing power loss in the current

setting resistor for better efficiency. The boost converter

achieves ±1.5% output voltage accuracy by the use of a

precision 0.8V reference. Protection features include out-

put overvoltage protection and internal soft-start. Wide

input supply range allows operation from 2.7V to 24V.

■

Wide Input Voltage Range: 2.7V to 24V

Tiny (3mm × 3mm) 10-Lead DFN Package

APPLICATIO S

■

White LED and OLED Displays

■

Digital Cameras, Sub-Notebook PCs

■

PDAs, Handheld Computers

■

TFT - LCD Bias Supply

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

■

Automotive

TYPICAL APPLICATIO

3V TO 5V

Conversion Efficiency

1µF

33µH

= 3.6V

LED DRIVER

SW1

SW2

BOOST CONVERTER

16V

6 LEDs

OUT2

LT3466-1

OUT1

30mA

1µF

475k

FB1

FB2

CTRL1

GND

CTRL2

63.4k

SHUTDOWN

AND DIMMING

CONTROL 1

SHUTDOWN

AND DIMMING

CONTROL 2

10Ω

24.9k

OUTPUT CURRENT (mA)

34661 F01a

34661 F01b

Figure 1. Li-Ion Powered Driver for 6 White LEDs and OLED Display

34661f

12 3 4 5 6 7...20

中文翻译

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与LT3466-1相关器件

型号	品牌	获取价格	描述	数据表
LT3466EDD	Linear	获取价格	Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes
LT3466EDD#PBF	Linear	获取价格	LT3466 - Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes; Pac
LT3466EDD#TR	Linear	获取价格	LT3466 - Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes; Pac
LT3466EDD#TRPBF	Linear	获取价格	暂无描述
LT3466EDD-1	Linear	获取价格	White LED Driver and Boost Converter in 3mm ×
LT3466EDD-1#PBF	Linear	获取价格	LT3466-1 - White LED Driver and Boost Converter in 3mm x 3mm DFN Package; Package: DFN; Pi
LT3466EDD-1#TR	Linear	获取价格	暂无描述
LT3466EFE	Linear	获取价格	LT3466 - Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes; Pac
LT3466EFE#PBF	Linear	获取价格	LT3466 - Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes; Pac
LT3467	Linear	获取价格	1A Low Noise High Current LED Charge Pump with Independent Torch/Flash Current Control

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