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Datasheet > LT3486EFE#TRPBF
LT3486EFE#TRPBF PDF预览

LT3486EFE#TRPBF

更新时间： 2024-10-03 19:04:51
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
20页 2548K
描述
LT3486 - Dual 1.3A White LED Step-Up Converters with Wide Dimming; Package: TSSOP; Pins: 16; Temperature Range: -40°C to 85°C

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中文翻译

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LT3486EFE#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：TSSOP包装说明：HTSSOP, TSSOP16,.25
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：24 V最小输入电压：2.5 V
标称输入电压：3 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：最大输出电流：1.3 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BOOST最大切换频率：2700 kHz
技术：BIPOLAR温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：4.4 mm
Base Number Matches：1

LT3486EFE#TRPBF 数据手册

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LT3486  
Dual 1.3A White LED  
Step-Up Converters with  
Wide Dimming  
FEATURES  
DESCRIPTION  
The LT®3486 is a dual step-up DC/DC converter  
specifically designed to drive up to 16 White LEDs (8 in  
series per converter) at constant current from a single  
Li-Ion cell. Series connection of the LEDs provides identi-  
cal LED currents resulting in uniform brightness. The two  
independentconvertersarecapableofdrivingasymmetric  
LED strings.  
n
Wide (1000:1) PWM Dimming Range with No  
ColorShift  
n
Independent Dimming and Shutdown Control of the  
LED Drivers  
n
Drives Up to 16 White LEDs at 25mA (8 per Driver)  
from a Single Li-Ion Cell  
n
Drives Up to 16 White LEDs at 100mA (8 per Driver)  
from 12V Supply  
The dimming of the two LED strings can be controlled  
independently via the respective CTRL pins. An internal  
dimmingsystemallowsthedimmingrangetobeextended  
up to 1000:1 by feeding a PWM signal to the respective  
PWMpins.TheLT3486operatingfrequencycanbesetwith  
an external resistor over a 200kHz to 2.5MHz range. A low  
200mVfeedbackvoltage( 3ꢀaccuracy)minimizespower  
loss in the current setting resistor for better efficiency.  
Additional features include output voltage limiting when  
LEDs are disconnected and overtemperature protection.  
n
±±3 LED Current Programming Aꢀꢀuraꢀy  
n
Open LED Proteꢀtion: ±6V Clamp Voltage  
n
Fixed Frequency Operation: Up to 2.5MHz  
n
Wide Input Voltage Range: 2.5V to 24V  
n
Low Shutdown Current: ICC < 1µA  
n
Overtemperature Protection  
n
Available in (5mm × 3mm × 0.75mm) 16-Pin DFN  
and 16-Pin Thermally Enhanced TSSOP Packages  
APPLICATIONS  
The LT3486 is available in a space saving 16-pin DFN  
(5mm × 3mm × 0.75mm) and 16-pin thermally enhanced  
TSSOP packages.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property  
of their respective owners.  
n
Notebook PC Display  
n
LED Camera Light for Cell Phones  
n
Car Dashboard Lighting  
Avionics Displays  
n
TYPICAL APPLICATION  
Li-Ion Powered Driver for Camera Flash and LCD Baꢀklighting  
V
IN  
3V TO 4.2V  
Effiꢀienꢀy vs VIN  
10µF  
90  
85  
80  
75  
MOVIE MODE  
LED1  
L1  
10µH  
L2  
10µH  
2.2µF  
LED1  
I
= 175mA  
2.2µF  
8 LEDs  
25mA  
SW1  
SW2  
V
IN  
FLASH MODE  
= 320mA  
AOT3218  
OVP2  
OVP1  
I
LED1  
DIMMING 1  
CTRL1  
CTRL2  
REF  
DIMMING 2  
OFF ON  
SHDN  
PWM1  
FB1  
LT3486  
0.1µF  
PWM2  
70  
65  
FB2  
OFF ON  
V
C1  
GND R  
V
C2  
T
8 LEDS/25mA  
3.4  
R
R
FB2  
FB1  
0.62Ω  
2.8k  
4.7nF  
63.4k  
3
3.6  
(V)  
3.8  
4
4.2  
100k  
3.2  
8.06Ω  
3486 TA01a  
V
IN  
0.1µF  
3486 TA01b  
3486fe  
1
1234567...20

中文翻译

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