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LTC3214EDD PDF预览

LTC3214EDD

更新时间: 2024-09-25 04:19:31
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
12页 180K
描述
500mA Camera LED Charge Pump

LTC3214EDD 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:HVSSON, SOLCC10,.12,20
针数:10Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.2Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHED CAPACITOR REGULATOR最大输入电压:4.5 V
最小输入电压:2.9 V标称输入电压:3.6 V
JESD-30 代码:S-PDSO-N10JESD-609代码:e0
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:10
最高工作温度:70 °C最低工作温度:
最大输出电流:0.6 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSSON封装等效代码:SOLCC10,.12,20
封装形状:SQUARE封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE, SHRINK PITCH
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
最大切换频率:1200 kHz技术:CMOS
温度等级:COMMERCIAL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

LTC3214EDD 数据手册

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LTC3214  
500mA Camera  
LED Charge Pump  
U
FEATURES  
DESCRIPTIO  
The LTC®3214 is a low noise, high current charge pump  
DC/DC converter capable of driving high current LEDs at  
up to 500mA from a 2.9V to 4.5V input. Low external  
parts count (two flying capacitors, one programming  
resistorandtwobypasscapacitorsatVIN andCPO)make  
the LTC3214 ideally suited for small, battery-powered  
applications.  
Low Noise Constant Frequency Operation*  
High Efficiency: Up to 94%  
Multi-Mode Operation: 1x, 1.5x or 2x Boost Modes  
Automatic Mode Switching  
High Output Current: Up to 500mA  
Tiny Application Circuit (3mm × 3mm DFN Package,  
All Components <1mm High)  
Automatic Soft-Start  
Output Disconnect  
Open, Shorted LED Protection  
No Inductors  
Built-in soft-start circuitry prevents excessive inrush cur-  
rentduringstart-up.Highswitchingfrequencyenablesthe  
use of small external capacitors.  
Output current level is programmed by an external resis-  
tor. LED current is regulated using an internal 110m  
sense resistor. Automatic mode switching optimizes effi-  
ciency by monitoring the voltage across the charge pump  
and switching modes only when dropout is detected. The  
part is available in a low profile 3mm x 3mm 10-lead DFN  
package.  
Internal 110mLED Current Sense Resistor  
3mm × 3mm 10-Lead DFN Package  
U
APPLICATIO S  
LED Torch/Camera Light Supply for Cell Phones,  
PDAs and Digital Cameras  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
*Protected by U.S. Patents including 6411531.  
General Lighting and/or Flash/Strobe Applications  
U
TYPICAL APPLICATIO  
Efficiency vs V  
IN  
C1  
C2  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
2.2µF  
2.2µF  
100mA  
200mA  
300mA  
+
+
C1  
V
C1 C2  
C2  
2.9V TO 4.5V  
C
CPO  
IN  
50mA  
LED  
C
CPO  
4.7µF  
IN  
2.2µF  
LTC3214  
I
I
LED  
LED  
UP TO 500mA  
DISABLE ENABLE  
EN  
0.11  
I
SET  
LED = AOT2015  
= 2.9V TYP AT 100mA  
V
F
R
SET  
2.9  
3.7  
4.1 4.3  
3.1 3.3 3.5  
3.9  
4.5  
3214 TA01a  
V
(V)  
IN  
LED: AOT2015  
3214 TA01b  
3214fa  
1

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