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| 型号： | LT3591EDDB#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER WHITE BCKLGT 8-DFN |
| 标准包装： | 1 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 750kHz ~ 1.2MHz |
| 电源电压： | 2.5 V ~ 12 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（3x2） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 1340 (CN2011-ZH PDF) |
| 其它名称： | LT3591EDDB#TRMPBFDKR |
LT3591
White LED Driver with
Integrated Schottky in
3mm × 2mm DFN
FEATURES
DESCRIPTION
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Drives Up to Ten White LEDs from a 3V Supply
High Side Sense Allows “One Wire Current Source”
Internal Schottky Diode
One Pin Dimming and Shutdown
80:1 True Color PWM TM Dimming Range
42V Open LED Protection
1MHz Switching Frequency
±5% Reference Accuracy
V IN Range: 2.5V to 12V
Requires Only 2.2μF Output Capacitor
Low Pro?le 8-Lead DFN Package
(3mm × 2mm × 0.75mm)
The LT ? 3591 is a ?xed frequency step-up DC/DC converter
speci?cally designed to drive up to ten white LEDs in series
from a Li-Ion cell. Series connection of the LEDs provides
identical LED currents resulting in uniform brightness
and eliminating the need for ballast resistors. The device
features a unique high side LED current sense that enables
the part to function as a “one wire current source;” one
side of the LED string can be returned to ground anywhere,
allowing a simpler one wire LED connection. Traditional
LED drivers use a grounded resistor to sense LED current,
requiring a 2-wire connection to the LED string.
The high switching frequency allows the use of tiny induc-
tors and capacitors. A single pin performs both shutdown
APPLICATIONS
and accurate LED dimming control. Few external compo-
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Cellular Phones
PDAs, Handheld Computers
Digital Cameras
MP3 Players
GPS Receivers
nents are needed: open-LED protection and the Schottky
diode are all contained inside a low pro?le 3mm × 2mm
DFN package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
True Color PWM is a trademark of Linear Technology Corporation. All other trademarks are
the property of their respective owners.
TYPICAL APPLICATION
Li-Ion Driver for Ten White LEDs
Conversion Ef?ciency
SHUTDOWN AND
DIMMING CONTROL
CTRL
80
75
V IN = 3.6V
10 LEDs
V IN
3V TO 5V
22 μ H
V IN
LT3591
CAP
R SENSE
10 ?
70
1 μ F
SW
GND
LED
2.2 μ F
65
60
55
0
5
10
15
20
LED CURRENT (mA)
3591 TA01b
3591 TA01a
3591f
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3592 | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming |
| LT3592EDDB | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming |
| LT3592EDDB#PBF | 制造商:Linear Technology 功能描述:IC LED DRIVER BUCK DFN-10 制造商:Linear Technology 功能描述:IC, LED DRIVER, BUCK, DFN-10; Topology:Buck (Step Down); No. of Outputs:1; Output Current:500mA; Output Voltage:30V; Driver Case Style:DFN; Input Voltage Min:3.6V; Input Voltage Max:36V; Dimming Control Type:PWM; Device Type:LED ;RoHS Compliant: Yes |
| LT3592EDDB#TRMPBF | 功能描述:IC LED DRVR HP CONST CURR 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| LT3592EDDB#TRPBF | 功能描述:IC LED DRVR HP CONST CURR 10-DFN 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 |
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