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LTC3216EDE PDF预览

LTC3216EDE

更新时间： 2024-11-12 22:35:19
品牌 Logo 应用领域
凌特 - Linear 闪光灯泵
页数 文件大小 规格书
12页 105K
描述
1A Low Noise High Current LED Charge Pump with Independent Torch/Flash Current Control

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中文翻译

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LTC3216EDE 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC12,.12,20
针数：12Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.19模拟集成电路 - 其他类型：SWITCHED CAPACITOR REGULATOR
最大输入电压：4.4 V最小输入电压：2.9 V
标称输入电压：3.6 VJESD-30 代码：R-PDSO-N12
JESD-609代码：e0长度：4 mm
湿度敏感等级：1功能数量：1
端子数量：12最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：1.5 A
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC12,.12,20封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：235
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Other Analog ICs表面贴装：YES
切换器配置：DOUBLER INVERTER技术：CMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：20
宽度：3 mmBase Number Matches：1

LTC3216EDE 数据手册

 浏览型号LTC3216EDE的Datasheet PDF文件第2页浏览型号LTC3216EDE的Datasheet PDF文件第3页浏览型号LTC3216EDE的Datasheet PDF文件第4页浏览型号LTC3216EDE的Datasheet PDF文件第5页浏览型号LTC3216EDE的Datasheet PDF文件第6页浏览型号LTC3216EDE的Datasheet PDF文件第7页 
LTC3216  
1A Lo w No ise Hig h Curre nt  
LED Cha rg e Pum p with  
Ind e p e nd e nt To rc h/ Fla sh Curre nt Co ntro l  
U
FEATURES  
DESCRIPTIO  
The LTC®3216 is a low noise, high current charge pump  
DC/DC converter designed to power high current LEDs.  
The part includes an accurate programmable current  
source capable of driving loads up to 1A from a 2.9V to  
4.4V input. Low external parts count (two flying capaci-  
tors, two programming resistors and two bypass capaci-  
■
High Efficiency Operation: 1x, 1.5x or 2x Boost  
Modes with Automatic Mode Switching  
Ultralow Dropout ILED Current Control  
Output Current up to 1A  
Low Noise Constant Frequency Operation*  
Independent Low Current/High Current  
Programming and Enable Pins  
■
■
■
■
tors at V and CPO) make the LTC3216 ideally suited for  
IN  
■
■
■
■
■
■
■
■
Wide V Range: 2.9V to 4.4V  
small, battery-powered applications.  
IN  
Open/Shorted LED Protection  
LED Disconnect in Shutdown  
Low Shutdown Current: 2.5µA  
4% LED Current Programming Accuracy  
Automatic Soft-Start Limits Inrush Current  
No Inductors  
Built-in soft-start circuitry prevents excessive inrush cur-  
rentduringstart-up.Highswitchingfrequencyenables the  
use of small external capacitors. Independent high and  
low current settings are programmed by two external  
resistors. Shutdown mode and current output levels are  
selected via two logic inputs.  
Tiny Application Circuit (All Components <1mm  
Profile)  
An ultralow dropout current source maintains accurate  
LED current at very low ILED voltages. Automatic mode  
switching optimizes efficiency by monitoring the voltage  
across the LED current source and switching modes only  
whenILED dropoutis detected. TheLTC3216is availablein  
a small 3mm × 4mm 12-Lead DFN package.  
■
3mm × 4mm 12-Lead DFN Package  
U
APPLICATIO S  
■
LED Torch/Camera Light Supply for Cell Phones,  
PDAs and Digital Cameras  
Generic Lighting and/or Flash/Strobe Applications  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
*Protected by U.S. Patents including 6411531.  
■
U
TYPICAL APPLICATIO  
C1  
C2  
Torch Mode Efficiency vs V  
IN  
2.2µF  
2.2µF  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
I
= 200mA  
LED  
+
–
+
–
C1  
V
C1 C2  
C2  
CPO  
2.9V TO 4.4V  
C
IN  
C
4.7µF  
IN  
CPO  
2.2µF  
LTC3216  
I
LED1  
EN2  
LED  
EN1  
EN2  
EN1 (TORCH)  
EN2 (FLASH)  
I
I
I
LED  
SET1  
SET2  
EN1  
P
/PIN  
LED  
0
1
0
1
0
0
1
1
0 (SHUTDOWN)  
200mA (TORCH)  
600mA  
LUMILEDS LXCL-PWF1  
V = 3V TYP AT 200mA  
20k  
1%  
6.65k  
1%  
F
800mA (FLASH)  
2.8  
3.6  
4.0 4.2  
3.0 3.2 3.4  
3.8  
4.4  
3216 TA01a  
V
IN  
(V)  
LED1: LUMILEDS LXCL-PWF1 LUXEON FLASH  
3216 TA01b  
3216fa  
1
1234567...12

中文翻译

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