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LTC3568IDD#PBF

更新时间： 2024-09-13 21:13:27
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
18页 298K
描述
LTC3568 - 1.8A, 4MHz, Synchronous Step-Down DC/DC Converter; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3568IDD#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, SOLCC10,.12,20
针数：10Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：6.9Samacsys Description：LINEAR TECHNOLOGY - LTC3568IDD#PBF - BUCK, SW REG, 1.8A, 4MHZ, 10DFN
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 5V模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE最大输入电压：5.5 V
最小输入电压：2.25 V标称输入电压：3.3 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：1端子数量：10
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：4 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）：NOT SPECIFIED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：BUCK
最大切换频率：4000 kHz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

LTC3568IDD#PBF 数据手册

 浏览型号LTC3568IDD#PBF的Datasheet PDF文件第2页浏览型号LTC3568IDD#PBF的Datasheet PDF文件第3页浏览型号LTC3568IDD#PBF的Datasheet PDF文件第4页浏览型号LTC3568IDD#PBF的Datasheet PDF文件第5页浏览型号LTC3568IDD#PBF的Datasheet PDF文件第6页浏览型号LTC3568IDD#PBF的Datasheet PDF文件第7页 
LTC3568  
1.8A, 4MHz, Synchronous  
Step-Down DC/DC Converter  
FeaTures  
DescripTion  
The LTC®3568 is a constant frequency, synchronous  
step- down DC/DC converter. Intended for medium power  
applications, it operates from a 2.5V to 5.5V input voltage  
range and has a user configurable operating frequency  
up to 4MHz, allowing the use of tiny, low cost capacitors  
and inductors 2mm or less in height. The output voltage  
is adjustable from 0.8V to 5V. Internal sychronous 0.11Ω  
power switches with 2.4A peak current ratings provide  
high efficiency. The LTC3568’s current mode architecture  
and external compensation allow the transient response  
to be optimized over a wide range of loads and output  
capacitors.  
n
ꢀ UsesꢀTinyꢀCapacitorsꢀandꢀInductor  
n
ꢀ HighꢀFrequencyꢀOperation:ꢀUpꢀtoꢀ4MHz  
n
ꢀ LowꢀR  
ꢀInternalꢀSwitches:ꢀ0.110Ω  
DS(ON)  
n
n
n
High Efficiency: Up to 96%  
Stable with Ceramic Capacitors  
Current Mode Operation for Excellent Line  
and Load Transient Response  
Short-Circuit Protected  
Low Dropout Operation: 100% Duty Cycle  
n
n
n
n
n
n
n
n
Low Shutdown Current: I ≤ 1µA  
Q
Low Quiescent Current: 60µA  
Output Voltages from 0.8V to 5V  
Selectable Burst Mode® Operation  
Sychronizable to External Clock  
Small 3mm × 3mm, 10-Lead DFN Package  
The LTC3568 can be configured for automatic power sav-  
ing Burst Mode operation to reduce gate charge losses  
when the load current drops below the level required for  
continuous operation. For reduced noise and RF interfer-  
ence,theSYNC/MODEpincanbeconfiguredtoskippulses  
or provide forced continuous operation.  
applicaTions  
n
Notebook Computers  
n
Digital Cameras  
To further maximize battery life, the P-channel MOSFET  
is turned on continuously in dropout (100% duty cycle)  
with a low quiescent current of 60µA. In shutdown, the  
device draws <1µA.  
n
Cellular Phones  
Handheld Instruments  
Board Mounted Power Supplies  
n
n
L, LT, LTC, LTM, Linear Technology, the Linear logo, OPTI-LOOP and Burst Mode are  
registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other  
trademarks are the property of their respective owners. Protected by U.S. Patents including  
5481178, 6580258, 6304066, 6127815, 6611131.  
Typical applicaTion  
EfficiencyꢀvsꢀLoadꢀCurrent  
V
IN  
2.5V TO 5.5V  
100  
95  
90  
85  
80  
75  
70  
1000  
100  
22µF  
EFFICIENCY  
V
IN  
SYNC/MODE  
PGOOD  
PV  
SV  
IN  
L1  
IN  
2µH  
V
OUT  
SW  
2.5V/1.8A  
LTC3568  
I
22µF + 10µF  
POWER LOSS  
TH  
887k  
SHDN/R  
V
FB  
T
10  
1
13k  
1000pF  
V
V
O
= 3.3V  
= 2.5V  
= 1MHz  
SGND  
PGND  
IN  
OUT  
324k  
412k  
f
Burst Mode  
OPERATION  
NOTE: IN DROPOUT, THE OUTPUT TRACKS  
THE INPUT VOLTAGE  
3568 F01  
1
10  
100  
1000  
10000  
LOAD CURRENT (mA)  
3568 TA01  
Figureꢀ1.ꢀStep-Downꢀ1.8AꢀRegulator  
3568fa  
ꢀ
1234567...18

中文翻译

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