LTC3206EUF#PBF

更新时间： 2024-09-24 12:58:11

品牌	Logo	应用领域
凌特 - Linear		显示器控制器
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16页	205K
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LTC3206EUF#PBF 数据手册

LTC3206

I C Multidisplay

LED Controller

FEATURES

DESCRIPTIO

TheLTC^®3206isahighlyintegratedmultidisplayLEDcon-

troller. The part contains a high efficiency, low noise frac-

tional step-up/direct-connect charge pump to provide

power for both main and sub white LED displays plus an

RGB color LED display. The LTC3206 requires only four

small ceramic capacitors plus two resistors to form a

complete 3-display LED power supply and current

controller.

■

Step-Up/Direct-Connect Fractional Charge Pump

Provides Up to 92% Efficiency

■

Up to 400mA Continuous Output Current

■

Independent Current and Dimming Control for

1-6 LED MAIN, 1-4 LED SUB and RGB LED Displays

LED Currents Programmable Using 2-Wire I²C™

■

Serial Interface

1% LED Current Matching

■

Low Noise Constant Frequency Operation*

Maximum currents for the main/sub displays and RGB

display are set independently. Current for each LED is

controlled with an internal current source. Dimming and

ON/OFF control for all displays is achieved via a 2-wire

serial interface. Two auxiliary LED pins can be individually

assigned to either the MAIN or SUB displays. 16 individual

dimming states exist for both the MAIN and SUB displays.

EachoftheRED, GREENandBLUELEDshave16dimming

states as well, resulting in up to 4096 color combinations.

■

Minimal Component Count

■

Automatic Soft-Start Limits Inrush Current

■

16 Exponentially Spaced Dimming States Provides

128:1 Brightness Range for MAIN and SUB Displays

■

Up to 4096 Color Combinations for RGB Display

■

Low Operating Current: I_VIN= 180µA

■

Tiny, Low Profile 24-Lead (4mm × 4mm × 0.75mm)

QFN Package

The LTC3206 charge pump optimizes efficiency based on

V_INand LED forward voltage conditions. The part powers

up in direct-connect mode and automatically switches to

1.5x step-up mode once any enabled LED current source

begins to enter dropout. Internal circuitry prevents inrush

current and excess input noise during start-up and mode

switching. The LTC3206 is available in a 24-lead (4mm ×

4mm) QFN package.

APPLICATIO S

■

Cellular Phones

■

Wireless PDAs

■

Multidisplay Handheld Devices

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

I²C is a trademark of Philips Electronics N.V.

* U.S. Patent 6,411,531

TYPICAL APPLICATIO

5-LED Main Display Efficiency

vs Input Voltage

2.2µF

100

MAIN DISPLAY

SUB DISPLAY

RGB ILLUMINATOR

2.7V TO

4.5V

CPO

2.2µF

LTC3206

RED

GREEN BLUE

MAIN1-4

AUX 1

SUB1-2

AUX 2

FIVE LEDs AT 15mA/LED

(TYP V AT 15mA = 3.2V)

I C SERIAL

INTERFACE

3206 TA01a

SERIAL PORT RGB

= 25°C

RGB

3.0

3.3

3.6

3.9

4.2

INPUT VOLTAGE (V)

3206 TA01b

3206f

12 3 4 5 6 7...16

中文翻译

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与LTC3206EUF#PBF相关器件

型号	品牌	获取价格	描述	数据表
LTC3206EUF#TR	Linear	获取价格	LTC3206 - I<sup>2</sup>C Multidisplay LED Controller; Package: QFN; Pins: 24;
LTC3206EUF#TRPBF	Linear	获取价格	LTC3206 - I<sup>2</sup>C Multidisplay LED Controller; Package: QFN; Pins: 24;
LTC3207	Linear	获取价格	600mA Universal Multi-Output LED/CAM Driver
LTC3207	ADI	获取价格	600mA 通用型多输出 LED/CAM 驱动器
LTC3207_15	Linear	获取价格	600mA Universal Multi-Output LED/CAM Driver
LTC3207-1	Linear	获取价格	600mA Universal Multi-Output LED/CAM Driver
LTC3207-1_15	Linear	获取价格	600mA Universal Multi-Output LED/CAM Driver
LTC3207EUF-1-PBF	Linear	获取价格	600mA Universal Multi-Output LED/CAM Driver
LTC3207EUF-1-TRPBF	Linear	获取价格	600mA Universal Multi-Output LED/CAM Driver
LTC3207EUF-PBF	Linear	获取价格	600mA Universal Multi-Output LED/CAM Driver

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