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LT3472EDD PDF预览

LT3472EDD

更新时间: 2024-02-24 17:29:44
品牌 Logo 应用领域
凌特 - Linear 转换器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 223K
描述
Boost and Inverting DC/DC Converter for CCD Bias

LT3472EDD 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, SOLCC10,.12,20
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:3.62Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION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-N10JESD-609代码:e3
长度:3 mm湿度敏感等级:1
功能数量:2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:0.25 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSON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
峰值回流温度(摄氏度):250认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Switching Regulator or Controllers
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: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:NOT SPECIFIED宽度:3 mm
Base Number Matches:1

LT3472EDD 数据手册

 浏览型号LT3472EDD的Datasheet PDF文件第2页浏览型号LT3472EDD的Datasheet PDF文件第3页浏览型号LT3472EDD的Datasheet PDF文件第4页浏览型号LT3472EDD的Datasheet PDF文件第5页浏览型号LT3472EDD的Datasheet PDF文件第6页浏览型号LT3472EDD的Datasheet PDF文件第7页 
LT3472  
Boost and Inverting  
DC/DC Converter  
for CCD Bias  
U
FEATURES  
DESCRIPTIO  
The LT®3472 dual channel switching regulator generates  
positive and negative outputs for biasing CCD imagers.  
The device delivers up to –8V at 50mA and 15V at 20mA  
from a lithium-ion cell, providing bias for many popular  
CCD imagers. Switching at 1.1MHz, the LT3472 uses tiny,  
low profile capacitors and inductors and generates low  
noise outputs that are easy to filter. Schottky diodes are  
internal and the output voltages are set with one resistor  
per channel, reducing external component count. The  
entire solution is less than 1mm profile and occupies just  
50mm2.  
Generates 15V at 20mA, –8V at 50mA  
from a Li-Ion Cell  
Internal Schottky Diodes  
VIN Range: 2.2V to 16V  
Output Voltages Up to ±34V  
Capacitor-Programmable Soft-Start  
Sequencing: Positive Output Reaches 88% of Final  
Value Before Negative Output Begins  
Requires Only One Resistor to Set Output Voltage  
Constant Switching Frequency Ensures Low  
Noise Outputs  
Available in a 10-Lead (3mm × 3mm) DFN Package  
Internal sequencing circuitry disables the negative chan-  
nel until the positive channel has reached 88% of its final  
value, ensuring that the sum of the two outputs is always  
positive. Separate soft-start capacitors for each output  
allow the ramp of each output to be independently  
controlled.  
U
APPLICATIO S  
CCD Bias  
TFT LCD Bias  
OLED Bias  
± Rail Generation for Op Amps  
The LT3472 is available in a low profile (0.75mm) 10-pin  
3mm × 3mm DFN package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Li-Ion CCD Bias Supply  
V
IN  
Conversion Efficiency  
3V TO 4.2V  
2.2µF  
85  
1µF  
22µH  
47µH  
80  
75  
70  
65  
60  
55  
50  
45  
40  
POS CHANNEL  
NEG CHANNEL  
SWP  
V
SWN  
DN  
IN  
V
POS  
15V  
V
POS  
20mA  
550k  
47µH  
LT3472  
GND  
FBP  
4.7pF  
V
320k  
10pF  
NEG  
–8V  
FBN  
50mA  
SHDN  
SHDN  
SSP  
SSN  
100nF  
100nF  
2.2µF  
2.2µF  
0
40  
50  
10  
20  
30  
LOAD CURRENT (mA)  
3472 TA01b  
3472 TA01a  
3472f  
1

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