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| 型号： | LT3591EDDB#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER WHITE BCKLGT 8-DFN |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
LT3591
APPLICATIONS INFORMATION
INDUCTOR SELECTION
A 22μH inductor is recommended for most LT3591 ap-
plications. Although small size and high ef?ciency are
major concerns, the inductor should have low core losses
at 1MHz and low DCR (copper wire resistance). Some
small inductors in this category are listed in Table 1. The
ef?ciency comparison of different inductors is shown in
Figure 3.
Table 1. Recommended Inductors
CAPACITOR SELECTION
The small size of ceramic capacitors make them ideal for
LT3591 applications. Use only X5R and X7R types because
they retain their capacitance over wider temperature
ranges than other types such as Y5V or Z5U. A 1μF input
capacitor and a 50V, 2.2μF output capacitor are suf?cient
for most applications.
A limited number of manufacturers produce small 50V
capacitors. Table 2 shows a list of several recommended
L
CURRENT
RATING
MAX
DIMENSION
L × W × H
50V capacitors. Consult the manufacturer for detailed
information on their entire selection of ceramic parts.
PART
(μH)
(mA)
(mm)
VENDOR
Table 2. Recommended Output Capacitors
VLF4012AT-
220MR51
VLCF4018T-
220MR49-2
VLCF4020T-
220MR56
22
22
22
510
490
560
4 × 3.8 × 1.2 TDK
www.tdk.com
4.1 × 4.1 × 1.8
4.1 × 4.1 × 2
PART
GRM21BR71H105KA12L
C
(μF)
1
VOLTAGE CASE SIZE
HEIGHT
TEMP. (mm) VENDOR
50V 0805 Murata
X7R 1.25 ± 0.15 www.murata.com
LQH43CN220K03
NR4018T220M
NR4012T220M
22
22
22
420
590
510
4.8 × 3.4 × 2.8 Murata
www.murata.com
4.2 × 4.2 × 1.8 Taiyo Yuden
www.t-yuden.com
4.2 × 4.2 × 1.2
GRM31MR71H105KA88
GRM31CR71H225KA88
1
2.2
50V
X7R
50V
X7R
1206
1.15 ± 0.1
1206
1.6 ± 0.2
CDRH3D18-
220NC
22
600
4 × 4 × 2
Sumida
www.sumida.com
GRM31CR71H475KA12L 4.7
50V
X7R
1206
1.6 ± 0.2
B82470-A1223-M
22
480
4.8 × 4.8 × 1.2 Epcos
www.epcos.com
UMK316BJ475KL-T
4.7
50V
X7R
1206 Taiyo Yuden
1.6 ± 0.2 www.t-yuden.com
85
80
V IN = 3.6V
10 LEDs
75
70
TAIYO YUDEN NR4018T220M
65
60
55
TDK VLCF4018T-220MR49-2
TAIYO YUDEN NR4012T220M
TDKVLCF4012AT-220MR51
MURATA LQH43CN220K03
TDK VLCF4020T-220MR56
SUMIDA CDRH3D18-220NC
EPCOS B82470-A1223-M
50
0
5
10
15
20
LED CURRENT (mA)
3591 F03
Figure 3. Ef?ciency Comparison of Different Inductors
3591f
7
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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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