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LTC3454EDD#TR PDF预览

LTC3454EDD#TR

更新时间: 2024-01-22 22:49:40
品牌 Logo 应用领域
凌特 - Linear 驱动器
页数 文件大小 规格书
12页 206K
描述
LTC3454 - 1A Synchronous Buck-Boost High Current LED Driver; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C

LTC3454EDD#TR 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON,
针数:10Reach Compliance Code: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:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:5.5 V
最小输入电压:2.7 V标称输入电压:3.6 V
JESD-30 代码:S-PDSO-N10JESD-609代码:e3
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:1.25 A标称输出电压:5.15 V
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装形状:SQUARE封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:0.8 mm表面贴装:YES
切换器配置:BUCK-BOOST最大切换频率:1150 kHz
温度等级:COMMERCIAL端子面层:Matte Tin (Sn)
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:30
宽度:3 mmBase Number Matches:1

LTC3454EDD#TR 数据手册

 浏览型号LTC3454EDD#TR的Datasheet PDF文件第2页浏览型号LTC3454EDD#TR的Datasheet PDF文件第3页浏览型号LTC3454EDD#TR的Datasheet PDF文件第4页浏览型号LTC3454EDD#TR的Datasheet PDF文件第5页浏览型号LTC3454EDD#TR的Datasheet PDF文件第6页浏览型号LTC3454EDD#TR的Datasheet PDF文件第7页 
LTC3454  
1A Synchronous Buck-Boost  
High Current LED Driver  
U
DESCRIPTIO  
FEATURES  
High Efficiency: >90% Typical in Torch Mode,  
The LTC®3454 is a synchronous buck-boost DC/DC  
converter optimized for driving a single high power LED  
at currents up to 1A from a single cell Li-Ion battery in-  
put. The regulator operates in either synchronous buck,  
synchronous boost, or buck-boost mode depending on  
>80% in Flash Mode  
Wide V Range: 2.7V to 5.5V  
IN  
Up to 1A Continuous Output Current  
3.5% LED Current Programming Accuracy  
Internal Soft-Start  
Open/Shorted LED Protection  
Constant Frequency 1MHz Operation  
Zero Shutdown Current  
Overtemperature Protection  
Small Thermally Enhanced 10-Lead (3mm × 3mm)  
DFN Package  
inputvoltageandLEDforwardvoltage.P /P efficiency  
LED IN  
greater than 90% can be achieved over the entire usable  
range of a Li-Ion battery (2.7V to 4.2V).  
LED current is programmable to one of four levels, includ-  
ingshutdown, withdualexternalresistorsanddualenable  
inputs. In shutdown no supply current is drawn.  
A high constant operating frequency of 1MHz allows the  
use of small external components. The LTC3454 is offered  
in a low profile (0.75mm) thermally enhanced 10-lead  
(3mm × 3mm) DFN package.  
U
APPLICATIO S  
Cell Phone Camera Flash  
Cell Phone Torch Lighting  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Digital Cameras  
PDAs  
Misc Li-Ion LED Drivers  
U
TYPICAL APPLICATIO  
High Efficiency Torch/Flash LED Driver  
L1  
5 H  
V
IN  
1-CELL  
Li-Ion  
LED Power Efficiency vs V  
IN  
10 F  
10 F  
I
2.7V-4.2V  
V
SW1  
SW2  
V
OUT  
IN  
LED  
100  
95  
A
D
C
I
= 150mA  
LED  
LED  
90  
EN2 EN1  
I
LED  
0 (SHUTDOWN)  
150mA  
850mA  
1A  
LED  
B
0
0
1
1
0
1
0
1
85  
I
= 1A  
LED  
EN1 (TORCH)  
EN2 (FLASH)  
80  
75  
1MHz  
BUCK-BOOST  
V
I
C
SET1  
70  
65  
60  
R
20.5k  
1%  
I
ISET1  
0.1 F  
SET2  
T
= 25°C  
A
LTC3454  
EFFICIENCY = (V  
– V )I /V I  
LED LED IN IN  
R
3.65k  
1%  
OUT  
ISET2  
GND (EXPOSED PAD)  
LED: LUMILEDS LXL-PWF1  
L1: SUMIDA CDRH6D28-5RONC  
3453 TA01a  
3.1 3.5 3.9  
4.7  
2.7  
5.1 5.5  
4.3  
(V)  
V
IN  
3454 TA01b  
3454f  
1

LTC3454EDD#TR 替代型号

型号 品牌 替代类型 描述 数据表
LTC3454EDD#TRPBF Linear

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LTC3454 - 1A Synchronous Buck-Boost High Current LED Driver; Package: DFN; Pins: 10; Tempe

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