- 您现在的位置：买卖IC网 > Sheet目录337 > LT3497EDDB#TRMPBF (Linear Technology)IC LED DRIVR WHITE BCKLGT 10-DFN
LT3497
APPLICATIONS INFORMATION
BOARD LAYOUT CONSIDERATIONS
As with all switching regulators, careful attention must be
paid to the PCB board layout and component placement.
To prevent electromagnetic interference (EMI) problems,
proper layout of high frequency switching paths is essential.
Minimize the length and area of all traces connected to
the switching node pins (SW1 and SW2). Keep the sense
voltage pins (CAP1, CAP2, LED1 and LED2) away from
VIA TO
GROUND PLANE
C OUT2
the switching node. Place the output capacitors (C OUT1
and C OUT2 ) next to the output pins (CAP1 and CAP2).
The placement of a bypass capacitor on V IN needs to be
in close proximity to the IC to ?lter EMI noise from SW1
and SW2. Always use a ground plane under the switching
regulator to minimize interplane coupling. Recommended
component placement is shown in Figure 12.
SW2
L2
CAP2
10
LED2
5
CTRL2
VIA TO
GROUND
C IN
V IN
9
8
4
3
GND
PLANE
L1
SW1
CAP1
7
6
2
1
LED1
CTRL1
C OUT1
3497 F12
VIAS TO
GROUND PLANE
Figure 12. Recommended Component Placement
TYPICAL APPLICATIONS
Li-Ion to 1/2 White LEDs
V IN
3V TO 5V
Conversion Ef?ciency
C1
C2
C3
1 μ F
70
V IN = 3.6V
65 1/2LEDs
1 μ F
L1
10 μ H
L2
10 μ H
1 μ F
60
55
SW1
V IN
SW2
CAP1
CAP2
50
R SENSE1
10 ?
LT3497
LED1 LED2
R SENSE2
10 ?
3497 TA02a
45
40
CTRL1 GND CTRL2
35
OFF ON
OFF ON
SHUTDOWN
AND DIMMING
SHUTDOWN
AND DIMMING
30
0
5
10
15
20
CONTROL 1
CONTROL 2
LED CURRENT (mA)
C1, C2: TAIYO YUDEN GMK212BJ105KG
3497 TA02b
C3: TAIYO YUDEN LMK212BJ105MG
L1, L2: MURATA LQH32CN100K53
3497f
14
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
LT3498EDDB#TRPBF
IC LED DRVR WT/OLED BCKLGT 12DFN
LT3517HUF#PBF
IC LED DRIVER AUTOMOTIVE 16-QFN
LT3519EMS-2#PBF
IC LED DRVR HP CONST CURR 16MSOP
LT3590ESC8#TRMPBF
IC LED DRVR WHITE BCKLGT SC-70-8
LT3591EDDB#TRMPBF
IC LED DRIVER WHITE BCKLGT 8-DFN
LT3593ES6#TRMPBF
IC LED DRIVR WHITE BCKLGT TSOT-6
LT3595AEUHH#TRPBF
IC LED DRIVR WHITE BCKLGT 56-QFN
LT3595EUHH#TRPBF
IC LED DRIVR WHITE BCKLGT 56-QFN
相关代理商/技术参数
LT3497EDDB#TRPBF
功能描述:IC LED DRIVR WHITE BCKLGT 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
LT3498
制造商:LINER 制造商全称:Linear Technology 功能描述:20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
LT3498EDDB
制造商:LINER 制造商全称:Linear Technology 功能描述:20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
LT3498EDDB#TRMPBF
功能描述:IC LED DRVR WT/OLED BCKLGT 12DFN 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
LT3498EDDB#TRPBF
功能描述:IC LED DRVR WT/OLED BCKLGT 12DFN 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
LT34-SC
制造商:THOMAS & BETTS 功能描述:
LT3500
制造商:World Products 功能描述:
LT3500EDD#PBF
功能描述:IC REG DL BUCK/LINEAR 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:*