- 您现在的位置：买卖IC网 > PDF目录20877 > LTC3205EUF (Linear Technology)IC LED DRVR WT/RGB BCKLGT 24-QFN PDF资料下载
参数资料
| 型号： | LTC3205EUF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WT/RGB BCKLGT 24-QFN |
| 标准包装： | 91 |
| 拓扑： | PWM，降压（降压），升压（升压），切换式电容器（充电泵） |
| 输出数： | 9 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 600kHz ~ 1.1MHz |
| 电源电压： | 2.8 V ~ 4.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
LTC3205
Multidisplay
LED Controller
FEATURES
DESCRIPTIO
s
s
s
s
s
s
s
s
s
s
s
s
Step-Up/Step-Down Fractional Charge Pump for Up
to 92% Efficiency
Independent Current and Dimming Control for
1-4 LED Main, 1-2 LED Sub and RGB LED Displays
LED Currents Programmable Using 3-Wire Serial
Interface
Up to 250mA of Continuous LED Current
0.7% LED Current Matching
Low Noise Constant Frequency Operation*
Minimal Component Count
Automatic Soft-Start Limits Inrush Current
Four Programmable Dimming States for Main and
Sub Displays
Up to 4096 Color Combinations for RGB Display
Low Shutdown Current: I CC < 1 μ A
Tiny 24-Lead (4mm × 4mm) QFN Package
The LTC ? 3205 is a highly integrated multidisplay LED con-
troller. The part contains a high efficiency, low noise frac-
tional step-up/step-down charge pump to provide power
for both main and sub white LED displays plus an RGB
color LED display. The LTC3205 requires only four small
ceramic capacitors plus two resistors to form a complete
3-display LED power supply and current controller.
Maximum currents for the main/sub and RGB displays are
set independently with a single resistor. Current for each
LED is controlled with an internal current source. Dim-
ming and ON/OFF control for all displays are achieved via
a 3-wire serial interface. Four dimming states exist for the
main and sub displays and 16 dimming states are available
via internal PWM for the red, green and blue LEDs result-
ing in up to 4096 color combinations.
The LTC3205 charge pump optimizes efficiency based on
APPLICATIO S
V IN and LED forward voltage conditions. The part powers
up in step-down mode and automatically switches to step-
s
s
s
Cellular Phones
Wireless PDAs
Multidisplay Handheld Devices
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
* U.S. Patent 6,411,531
The LTC3205 is available in a low profile 24-lead
(4mm × 4mm × 0.8mm) QFN package.
TYPICAL APPLICATIO
4-LED Main Panel Efficiency
vs Input Voltage
1 μ F
1 μ F
100
90
V IN
2.8V TO
4.5V
1 μ F
V IN
CPO
MAIN DISPLAY
SUB DISPLAY
RGB ILLUMINATOR
1 μ F
80
70
LTC3205
60
FOUR LEDs AT 15mA/LED
SERIAL
INTERFACE
3
MAIN1-4
SUB1-2
SERIAL PORT RGB
I RGB I MS
4
2
3
RED
GREEN BLUE
3205 TA01a
50
40
30
20
0
10 (TYP V F AT 15mA = 3.2V)
T A = 25 ° C
3.0 3.3 3.6
3.9
4.2
INPUT VOLTAGE (V)
3205 TA01b
3205f
1
相关PDF资料 |
PDF描述 |
|---|---|
| P51-75-S-AA-I36-20MA-000-000 | SENSOR 75PSIS 7/16 UNF 4-20 MA |
| P51-15-S-Z-I36-20MA-000-000 | SENSOR 15PSIS 1/4 NPT 4-20 MA |
| P51-3000-A-H-M12-4.5OVP-000-000 | SENSOR 3000PSI M12-1.5 6G 4.5V |
| REC3-1205DRW/H4/A/SMD/CTRL-R | CONV DC/DC 3W 9-18VIN +/-05VOUT |
| REC5-2405DRWZ/H/B/M/SMD | CONV DC/DC 5W 9-36VIN +/-05VOUT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3205EUF#PBF | 功能描述:IC LED DRVR WT/RGB BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LTC3205EUF#TR | 功能描述:IC LED DRVR WT/RGB BCKLGT 24-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LTC3205EUF#TRPBF | 功能描述:IC LED DRVR WT/RGB BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LTC3205EUFPBF | 制造商:Linear Technology 功能描述:Multidisplay LED Controller,LTC3205 |
| LTC3205XEUF#PBF | 功能描述:IC LED DRVR WT/RGB BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
发布紧急采购，3分钟左右您将得到回复。