收藏本站
LT3491
PI FU CTIO S (SC70/DFN)
I LED =
SW (Pin 1/Pin 3): Switch Pin. Minimize trace area at this
pin to minimize EMI. Connect the inductor at this pin.
GND (Pins 2, 3, 4/Pin 2): Ground Pins. All three pins
should be tied directly to local ground plane.
V IN (Pin 5/Pin 1): Input Supply Pin. Must be locally
bypassed.
CTRL (Pin 6/Pin 6): Dimming and Shutdown Pin. Connect
this pin below 50mV to disable the driver. As the pin
voltage is ramped from 0V to 1.5V, the LED current ramps
from 0 to I LED ( = 200mV/R SENSE ). The CTRL pin must not
be left floating.
LED (Pin 7/Pin 5): Connection Point for the Anode of the
First LED and the Sense Resistor. The LED current can be
programmed by :
200mV
R SENSE
CAP (Pin 8/Pin 4): Output of the Driver. This pin is
connected to the cathode of internal Schottky. Connect the
output capacitor to this pin and the sense resistor from
this pin to the LED pin.
EXPOSED PAD (NA/Pin 7): The Exposed Pad should be
soldered to the PCB ground to achieve the rated thermal
performance.
BLOCK DIAGRA
5
1
V IN
PWM
COMP
SW
CAP
8
DRIVER
A2
R
S
Q
Q1
OVERVOLTAGE
+
PROTECTION
Σ
A3
R
–
RAMP
GENERATOR
SHDN
V REF
1.25V
OSCILLATOR
+
A = 6.25
A1
–
LED
7
R C
START-UP
C C
CONTROL
GND
CTRL
PINS 2, 3, 4
PIN NUMBERS CORRESPOND TO THE 8-PIN SC70 PACKAGE
6
3491 F01
Figure 1. Block Diagram
3491fa
5
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
LT3492IFE#TRPBF IC LED DVR HP CONST CURR 28TSSOP
LT3496IUFD#PBF IC LED DRVR WHT/RGB BCKLT 28-QFN
LT3497EDDB#TRMPBF IC LED DRIVR WHITE BCKLGT 10-DFN
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
相关代理商/技术参数
LT3491EDC#TRPBF 功能描述:IC LED DRIVER WHITE BCKLGT 6-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
LT3491ESC8 制造商:Linear Technology 功能描述:LED DRVR 6Segment 3.3V/5V/9V 8-Pin SC-70
LT3491ESC8#PBF 制造商:Linear Technology 功能描述:LED DRVR 6Segment 3.3V/5V/9V 8-Pin SC-70 制造商:Linear Technology 功能描述:LED DRIVER 2.5-12V 2.3MHZ 5
LT3491ESC8#TR 制造商:Linear Technology 功能描述:LED DRVR 6Segment 3.3V/5V/9V 8-Pin SC-70 T/R
LT3491ESC8#TRMPBF 功能描述:IC LED DRVR WHITE BCKLGT SC-70-8 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
LT3491ESC8#TRPBF 功能描述:IC LED DRVR WHITE BCKLGT SC-70-8 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
LT3492 制造商:LINER 制造商全称:Linear Technology 功能描述:60V Triple Step-Down LED Driver Programmable Temperature Protection
LT3492EFE 制造商:LINER 制造商全称:Linear Technology 功能描述:Triple Output LED Driver with 3000:1 PWM Dimming