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LTC3245IDE#PBF

更新时间： 2024-11-09 19:29:27
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
18页 579K
描述
LTC3245 - Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3245IDE#PBF 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, SOLCC12,.12,20
针数：12Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.46其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 2.7V TO 38V; ALSO OPERATES AT 5V
模拟集成电路 - 其他类型：SWITCHED CAPACITOR REGULATOR最大输入电压：38 V
最小输入电压：2.7 V标称输入电压：12 V
JESD-30 代码：R-PDSO-N12JESD-609代码：e3
长度：4 mm湿度敏感等级：1
功能数量：1端子数量：12
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.25 A标称输出电压：3.3 V
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC12,.12,20封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：NOT SPECIFIED
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：BUCK-BOOST技术：CMOS
温度等级：AUTOMOTIVE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 mmBase Number Matches：1

LTC3245IDE#PBF 数据手册

 浏览型号LTC3245IDE#PBF的Datasheet PDF文件第2页浏览型号LTC3245IDE#PBF的Datasheet PDF文件第3页浏览型号LTC3245IDE#PBF的Datasheet PDF文件第4页浏览型号LTC3245IDE#PBF的Datasheet PDF文件第5页浏览型号LTC3245IDE#PBF的Datasheet PDF文件第6页浏览型号LTC3245IDE#PBF的Datasheet PDF文件第7页 
LTC3245  
Wide V Range,  
IN  
Low Noise, 250mA Buck-Boost  
Charge Pump  
FeaTures  
DescripTion  
The LTC®3245 is a switched capacitor buck-boost DC/DC  
converter that produces a regulated output (3.3V, 5V or  
adjustable) from a 2.7V to 38V input. The device uses  
switched capacitor fractional conversion to maintain  
regulation over a wide range of input voltage. Internal  
circuitry automatically selects the conversion ratio to  
optimize efficiency as input voltage and load conditions  
vary. No inductors are required.  
n
2.7V to 38V V Range  
Q
12V to 5V Efficiency = 81%  
IN  
n
I = 18µA Operating; 4μA in Shutdown  
n
n
Multimode Operation (2:1, 1:1, 1:2) with Automatic  
Mode Switching  
n
Low Noise, Constant Frequency Operation  
Pin Selectable Burst Mode® Operation  
n
n
V
: Fixed 3.3V, 5V or Adjustable (2.5V to 5V)  
OUT  
Up to 250mA  
n
n
n
n
I
OUT  
The unique constant frequency architecture provides a  
lower noise output than conventional charge pump regu-  
lators. To optimize efficiency at the expense of slightly  
higher output ripple, the device has pin selectable Burst  
Mode operation.  
Overtemperature and Short-Circuit Protection  
Operating Junction Temperature: 150°C Maximum  
Thermally Enhanced 12-Pin MSOP and Low Profile  
12-Pin (3mm × 4mm) DFN Packages  
Low operating current (20μA with no load, 4μA in shut-  
down) and low external parts count (three small ceramic  
capacitors)maketheLTC3245ideallysuitedforlowpower,  
spaceconstrainedautomotive/industrialapplications.The  
deviceisshort-circuitandovertemperatureprotected,and  
is available in thermally enhanced 12-pin MSOP and low  
profile 3mm × 4mm 12-pin DFN packages.  
applicaTions  
n
Automotive ECU/CAN Transceiver Supplies  
n
Industrial Housekeeping Supplies  
n
Low Power 12V to 5V Conversion  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
Typical applicaTion  
Efficient Regulated 5V Output  
5VOUT Efficiency vs Output Current  
90  
80  
70  
60  
50  
40  
30  
20  
10  
400  
350  
300  
250  
200  
150  
100  
50  
V
= 12V  
IN  
1µF  
EFFICIENCY  
+
–
C
C
LTC3245  
V
= 5V  
UP TO 250mA  
OUT  
OUT  
V
= 2.7V TO 38V  
V
V
OUT  
IN  
IN  
I
SEL2  
OUTS/ADJ  
PGOOD  
500k  
P
LOSS  
1µF  
BURST  
SEL1  
10µF  
GND  
3245 TA01a  
0
0.1  
1
10  
(mA)  
100  
1000  
I
OUT  
3245 TA01b  
3245fa  
1
For more information www.linear.com/LTC3245  
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中文翻译

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