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LT3473AEDE PDF预览

LT3473AEDE

更新时间: 2024-01-18 17:23:45
品牌 Logo 应用领域
凌特 - Linear 转换器升压转换器
页数 文件大小 规格书
12页 266K
描述
Micropower 1A Boost Converter with Schottky and Output Disconnect

LT3473AEDE 技术参数

是否Rohs认证:不符合生命周期:Active
包装说明:3 X 3 MM, PLASTIC, MO-229-WEED, DFN-8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.79Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR最大输入电压:16 V
最小输入电压:2.2 V标称输入电压:3 V
JESD-30 代码:S-PDSO-N8JESD-609代码:e0
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:70 °C最低工作温度:
最大输出电流:1.2 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSSON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):255
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:BOOST
最大切换频率:1400 kHz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:40宽度:3 mm
Base Number Matches:1

LT3473AEDE 数据手册

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LT3473/LT3473A  
Micropower 1A Boost  
Converter with Schottky  
and Output Disconnect  
U
FEATURES  
DESCRIPTIO  
The LT®3473/LT3473A are micropower step-up DC/DC  
converters with integrated Schottky diode and output  
disconnect circuitry in low profile DFN packages. The  
small package size, high level of integration and the use of  
tiny SMT components yield a solution size of less than  
50mm2. Theinternal1Aswitchallowsthedevicetodeliver  
25Vatupto80mAfromaLi-Ioncell,whileautomaticBurst  
Mode operation maintains efficiency at light load. An  
auxiliary reference input (CTRL) allows the user to over-  
ride the internal 1.25V feedback reference with any lower  
value, allowing full control of the output voltage during  
operation. A PGOOD pin sinks current when the output  
voltage reaches 90% of final value.  
Tiny Solution Size  
Low Quiescent Current:  
150µA in Active Mode (VIN = 3.6V, VOUT = 15V,  
No Load)  
1µA in Shutdown Mode  
Internal 1A, 36V Switch  
Integrated Schottky Diode  
Integrated PNP Output Disconnect  
Internal Reference Override Pin  
PGOOD Pin  
25V at 80mA from 3.6V Input  
Auxiliary NPNs for Intermediate  
Bias Voltages (LT3473A)  
Automatic Burst Mode® Operation at Light Load  
TheLT3473AincludestwoNPNtransistorsforgenerating  
intermediate bias voltages from the output and is offered  
in a 12-lead (4mm × 3mm) DFN package. The LT3473  
does not include these NPNs and is offered in an 8-lead  
(3mm × 3mm) package.  
Constant Switching Frequency: 1.2MHz  
Thermal Shutdown  
Input Range: 2.2V to 16V  
Low Profile (3mm × 3mm) DFN Package (LT3473)  
Low Profile (4mm × 3mm) DFN Package (LT3473A)  
U
The rugged 36V switch and output disconnect circuitry  
allow outputs up to 34V to be easily generated in a simple  
boost topology.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
APPLICATIO S  
OLED Bias  
CCD Bias  
U
TYPICAL APPLICATIO  
Conversion Efficiency and Power Loss vs Output Current  
80  
75  
70  
65  
60  
55  
500  
400  
300  
200  
100  
0
V
V
= 3.6V  
OUT  
IN  
= 15V  
V
OUT  
25V  
PGOOD  
CTRL  
OUT  
80mA  
2.2µF  
6.8µH  
LT3473  
V
IN  
3V TO 4.2V  
SW  
CAP  
FB  
V
IN  
2M  
0.47µF  
SHDN  
100k  
GND  
4.7µF  
3473 TA01a  
0.1  
1
10  
OUTPUT CURRENT (mA)  
100  
3473 TA01b  
3473f  
1

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