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LT3463 PDF预览

LT3463

更新时间: 2024-11-27 14:58:07
品牌 Logo 应用领域
亚德诺 - ADI 肖特基二极管转换器
页数 文件大小 规格书
8页 193K
描述
具肖特基二极管的双通道、微功率 DC/DC 转换器

LT3463 数据手册

 浏览型号LT3463的Datasheet PDF文件第2页浏览型号LT3463的Datasheet PDF文件第3页浏览型号LT3463的Datasheet PDF文件第4页浏览型号LT3463的Datasheet PDF文件第5页浏览型号LT3463的Datasheet PDF文件第6页浏览型号LT3463的Datasheet PDF文件第7页 
LT3463/LT3463A  
Dual Micropower  
DC/DC Converters  
with Schottky Diodes  
U
FEATURES  
DESCRIPTIO  
The LT®3463/LT3463A are dual micropower DC/DC con-  
verters with internal Schottky diodes in a 10-lead 3mm ×  
3mm DFN package. Negative and positive LT3463 con-  
verters have a 250mA current limit. The LT3463A positive  
converter also has a 250mA limit, while the negative  
converter has a 400mA limit. Both devices have an input  
voltage range of 2.4V to 15V, making them ideal for a wide  
variety of applications. Each converter features a quies-  
cent current of only 20µA, which drops to under 1µA in  
shutdown.Acurrentlimited,fixedoff-timecontrolscheme  
conserves operating current, resulting in high efficiency  
overabroadrangeofloadcurrent.The42Vswitchenables  
high voltage outputs up to ±40V to be easily generated  
withouttheuseofcostlytransformers. Thelow300nsoff-  
time permits the use of tiny, low profile inductors and  
capacitors to minimize footprint and cost in space-con-  
scious portable applications.  
Generates Well-Regulated Positive and  
Negative Outputs  
Low Quiescent Current:  
20  
<1  
µ
A (per Converter) in Active Mode  
µA in Shutdown Mode  
Internal 42V Power Switches  
Internal 42V Schottky Diodes  
Low VCESAT Switch: 180mV at 150mA  
Input Voltage Range: 2.4V to 15V  
High Output Voltages: Up to ±40V  
Low Profile (0.8mm) 3mm x 3mm DFN Package  
U
APPLICATIO S  
CCD Bias  
LCD Bias  
Handheld Computers  
Digital Cameras  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
CCD Bias Supply (15V, –8V)  
Efficiency and Power Loss  
10µH  
80  
75  
70  
65  
60  
55  
50  
240  
200  
160  
120  
80  
V
V
OUT1  
IN  
V
= 3.6V  
IN  
15V  
2.7V  
15V EFFICIENCY  
10mA  
TO 5V  
1M  
4.7µF  
2.2µF  
V
SW1 V  
IN  
OUT1  
–8V EFFICIENCY  
90.9k  
SHDN1  
FB1  
LT3463A  
V
REF  
154k  
SHDN2  
GND  
FB2  
D2  
SW2  
15V LOSS  
40  
–8V LOSS  
1M  
10pF  
1µF  
0
10µH  
V
OUT2  
0.1  
1
10  
100  
–8V  
LOAD CURRENT (mA)  
50mA  
4.7µF  
3463 TA01b  
3463 TA01a  
3463f  
1

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