LTC3209EUF-2#PBF

更新时间： 2024-01-25 08:41:40

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
20页	248K
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中文翻译

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数据手册

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LTC3209EUF-2#PBF 数据手册

LTC3209-1/LTC3209-2

600mA Main/Camera

LED Controller

FEATURES

DESCRIPTIO

The LTC^®3209-1/LTC3209-2 are highly integrated

multidisplay LED controllers. These parts contain a high

efficiency, low noise charge pump to provide power to

MAIN, CAM and AUX LED displays. The LTC3209-1/

LTC3209-2 require only four small ceramic capacitors

andonecurrentsetresistortoformacompleteLEDpower

supply and current controller.

■

Multimode Charge Pump Provides Up to 94%

Efficiency (1x, 1.5x, 2x)

■

Up to 600mA Total Output Current

■

LTC3209-1: 8 Current Sources Available as

6 × 25mA MAIN, 1 × 400mA CAM and 1 × 15mA AUX

■

LTC3209-2: 8 Current Sources Available as

5 × 25mA MAIN, 2 × 200mA CAM and 1 × 15mA AUX

■

LED On/Off and Brightness Level Programmable

Themaximumdisplaycurrentsaresetbyasingleexternal

resistor. Current for each LED is controlled by a precision

internal current source. Dimming and On/Off for all dis-

playsisachievedviatheI²Cserialinterface. 256statesare

availablefortheMAINdisplay. Sixteenstatesareavailable

for the CAM display and four states are available for the

AUX display.

Using 2-Wire I²C^TMInterface

■

Automatic Charge Pump Mode Switching or Fixed

Mode for Power Supply Generation

■

Low Noise Constant Frequency Operation*

■

Internal Soft-Start Limits Inrush Current During

Start-up and Mode Switching

■

Short Circuit/Thermal/Open-Shorted LED Protection

■

The charge pump optimizes efficiency based on the

voltage across the LED current sources. The part powers

upin1xmodeandwillautomaticallyswitchtoboostmode

whenever any enabled MAIN or CAM LED current source

begins to enter dropout. The first dropout switches the

part into 1.5x mode and a subsequent dropout switches

the part into 2x mode. The part resets to 1x mode

whenever a data bit is updated via the I²C port. The parts

are available in a 4mm × 4mm 20-lead QFN package.

256 Brightness States for MAIN Display

16 Brightness States for CAM Display

4 Brightness States for AUX Display

^{20-Lead (4mm ×}U^{4mm) QFN Package}

APPLICATIO S

■

Video/Camera Phones with QVGA+ Displays

, 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 6411531

TYPICAL APPLICATIO

LTC3209-1 6 MAIN/1 CAM Operation

LTC3209-2 5 MAIN/2 CAM Operation

2.2µF

MAIN

CAM

MAIN

CAM

C1P C1M C2P C2M

CPO

C1P C1M C2P C2M

CPO

BAT1,2

2.2µF

BAT

BAT1,2

RED

2.2µF

LTC3209-2

LTC3209-1

SCL

SDA

SCL

SDA

I C

MAIN1-6

CAM

MAIN1-5

CAM

LOW HI

CAMHL

AUX

GND

LOW HI

CAMHL

AUX

GND

3209 TA01

3209 TA02

REF

24.3k

320912fa

12 3 4 5 6 7...20

中文翻译

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与LTC3209EUF-2#PBF相关器件

型号	品牌	获取价格	描述	数据表
LTC3209EUF-2#TR	Linear	获取价格	LTC3209 - 600mA Main/Camera LED Controller; Package: QFN; Pins: 20; Temperature Range: -40
LTC3209EUF-2#TRPBF	Linear	获取价格	LTC3209 - 600mA Main/Camera LED Controller; Package: QFN; Pins: 20; Temperature Range: -40
LTC3210	Linear	获取价格	MAIN/CAM LED Controller in 3mm × 3mm QFN
LTC3210	ADI	获取价格	采用 3mm x 3mm QFN 封装的主/相机 LED 控制器
LTC3210-1	Linear	获取价格	MAIN/CAM LED Controller with 64-Step Brightne
LTC3210-1	ADI	获取价格	采用 3mm x 3mm QFN 封装、具 64 级亮度控制能力的主/相机 LED控制器
LTC3210-2	Linear	获取价格	MAIN/CAM LED Controllers with 32-Step Brightn
LTC3210-2	ADI	获取价格	采用 3mm x 3mm QFN 封装、具 32 级亮度控制能力的主/相机 LED 控制器
LTC3210-2_15	Linear	获取价格	MAIN/CAM LED Controllers with 32-Step Brightness Control
LTC3210-3	Linear	获取价格	MAIN/CAM LED Controllers with 32-Step Brightn

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