Datasheet > LTC3208

LTC3208

更新时间： 2024-09-25 14:58:03

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
24页	340K
描述
高电流软件可配置型多显示屏 LED 控制器

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中文翻译

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LTC3208 数据手册

LTC3208

High Current Software

Conﬁgurable Multidisplay

LED Controller

DESCRIPTIO

FEATURES

The LTC^®3208 is a highly integrated multidisplay LED

controller.Thepartcontainsa1Ahighefﬁciency,lownoise

chargepumptoprovidepowertotheMAIN,SUB,RGB,CAM

and AUX LED displays. The LTC3208 requires only small

ceramic capacitors and one current set resistor to form a

complete LED power supply and current controller.

■

1x/1.5x/2x Charge Pump Provides Up to 95%

Efﬁciency

■

Up to 1A Total Output Current

■

17 Current Sources Available as MAIN, SUB, RGB,

CAM and AUX LED Drivers

■

LED ON/OFF, Brightness Level and Display

Conﬁguration Programmable Using 2-Wire I C™

The maximum display currents are set by a single ex-

ternal resistor. Current for each LED is controlled by a

precision internal current source. Dimming and On/Off

Interface

■

Low Noise Constant Frequency Operation with Flying

Capacitor Edge Rate Control

for all displays is achieved via the I C serial interface.

■

Automatic Charge Pump Mode Switching

256 brightness levels are available for the MAIN and SUB

displays. 16 levels are available for the RGB and CAM

displays. Four AUX current sources can be independently

■

Internal Soft-Start Limits Inrush Current During

Startup and Mode Switching

■

Open/Shorted LED Protection

assigned via the I C port to the CAM, SUB, MAIN or AUX

■

Short-Circuit/Thermal Protection

DAC controlled displays.

■

256 Brightness States for MAIN and SUB Displays

The LTC3208 charge pump optimizes efﬁciency based

on the voltage across the LED current sources. The part

powers up in 1x mode and will automatically switch to

boost mode whenever any enabled LED current source

begins to enter dropout. The ﬁrst dropout switches the

part into 1.5x mode and a subsequent dropout switches

the LTC3208 into 2x mode. The part is available in a small

5mm × 5mm 32-lead QFN package.

■

4096 Color Combinations for the RGB Display

■

5mm × 5mm 32-Lead QFN Plastic Package

APPLICATIO S

■

Video/Camera Phones with QVGA + Displays

, LTC and LT 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

4-LED MAIN Display

Efﬁciency vs Input Voltage

2.2

100

C1P C1M C2P C2M

CPO

MAIN

SUB

CAMERA

RGB

AUX

BAT

4.7

BAT1,2,3

4.7

LTC3208

MAIN1-4

SUB1-2

CAM1-4

RGB

SCL/SDA

I C

4 LEDs AT 15mA/LED

(TYP V AT 15mA = 3.2V)

= 25°C

ENRGBS

CAMHL

ENABLE DISABLE

LOW HI

AUX1-4

GND

3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4

(V)

3208 TA01a

REF

BAT

24.3k

3208 TA01b

3208fa

12 3 4 5 6 7...24

中文翻译

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与LTC3208相关器件

型号	品牌	获取价格	描述	数据表
LTC3208EUH	Linear	获取价格	High Current Software Confi gurable Multidisplay LED Controller
LTC3209	ADI	获取价格	600mA 主/相机 LED 控制器
LTC3209-1	Linear	获取价格	600mA Main/Camera LED Controller
LTC3209-1_15	Linear	获取价格	600mA Main/Camera LED Controller
LTC3209-2	Linear	获取价格	600mA Main/Camera LED Controller
LTC3209-2_15	Linear	获取价格	600mA Main/Camera LED Controller
LTC3209EUF-1	Linear	获取价格	600mA Main/Camera LED Controller
LTC3209EUF-1#PBF	Linear	获取价格	LTC3209 - 600mA Main/Camera LED Controller; Package: QFN; Pins: 20; Temperature Range: -40
LTC3209EUF-1#TRPBF	Linear	获取价格	LTC3209 - 600mA Main/Camera LED Controller; Package: QFN; Pins: 20; Temperature Range: -40
LTC3209EUF-2	Linear	获取价格	600mA Main/Camera LED Controller

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