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LTC3608IWKG-TRPBF PDF预览

LTC3608IWKG-TRPBF

更新时间： 2024-01-03 14:44:39
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
24页 371K
描述
18V, 8A Monolithic Synchronous Step-Down DC/DC Converter

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中文翻译

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LTC3608IWKG-TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC52,.27X.31,20
针数：52Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.18其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.5 TO 0.7V
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：18 V
最小输入电压：4 V标称输入电压：15 V
JESD-30 代码：R-PQCC-N52JESD-609代码：e3
长度：8 mm湿度敏感等级：1
功能数量：1端子数量：52
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：8 A封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC52,.27X.31,20
封装形状：RECTANGULAR封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：BUCK
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：QUAD
处于峰值回流温度下的最长时间：30宽度：7 mm
Base Number Matches：1

LTC3608IWKG-TRPBF 数据手册

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LTC3608  
18V, 8A Monolithic  
Synchronous Step-Down  
DC/DC Converter  
DESCRIPTION  
FEATURES  
TheLTC®3608isahighefficiency,monolithicsynchronous  
step-downDC/DCconverterthatcandeliverupto8Aoutput  
current from a 4V to 18V (20V maximum) input supply. It  
uses a valley current control architecture to deliver very  
low duty cycle operation at high frequency with excellent  
transient response. The operating frequency is selected  
by an external resistor and is compensated for variations  
n
8A Output Current  
n
Wide V Range = 4V to 18V  
IN  
n
Internal N-Channel MOSFETs  
True Current Mode Control  
Optimized for High Step-Down Ratios  
n
n
n
t
≤ 100nsec  
ON(MIN)  
n
n
n
n
n
n
n
n
n
n
n
Extremely Fast Transient Response  
Stable with Ceramic C  
in V and V  
.
OUT  
IN  
OUT  
1ꢀ 0ꢁ.V Voltage Reference  
Power Good Output Voltage Monitor  
Adjustable On-Time/Switching Frequency  
Adjustable Current Limit  
Programmable Soft-Start  
Output Overvoltage Protection  
Optional Short-Circuit Shutdown Timer  
The LTC3608 can be configured for discontinuous or  
forced continuous operation at light load. Forced continu-  
ous operation reduces noise and RF interference while  
discontinuous mode provides high efficiency by reducing  
switching losses at light loads.  
Fault protection is provided by internal foldback current  
limiting,anoutputovervoltagecomparatorandanoptional  
short-circuit shutdown timer. Soft-start capability for sup-  
ply sequencing is accomplished using an external timing  
capacitor.Theregulatorcurrentlimitisuserprogrammable.  
A power good output voltage monitor indicates when  
the output is in regulation. The LTC3608 is available in a  
compact 7mm × 8mm QFN package.  
Low Shutdown I : 15μA  
Available in a 7mm × 8mm 52-Lead QFN Package  
Q
APPLICATIONS  
n
Point of Load Regulation  
Distributed Power Systems  
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners. Protected by U.S. Patents including  
5481178, 6100678, 6580258, 5847554, 6304066.  
TYPICAL APPLICATION  
High Efficiency Step-Down Converter  
187k  
Efficiency and Power Loss  
vs Load Current  
V
OUT  
V
I
0.1μF  
ON  
ON  
100  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
10000  
1000  
100  
10  
V
IN  
4V TO 18V  
RUN/SS  
V
IN  
EFFICIENCY  
10μF  
×3  
100pF  
LTC3608  
0.8μH  
V
2.5V  
8A  
OUT  
SW  
1500pF  
11.3k  
0.22μF  
100μF  
×2  
I
TH  
BOOST  
POWER LOSS  
SGND INTV  
CC  
30.1k  
9.53k  
FCB  
V
OUT  
EXTV = 5V  
= 12V  
IN  
V
= 2.5V  
4.7μF  
V
RNG  
CC  
PGND  
1
PGOOD  
0.01  
0.1  
1
10  
EXTV  
CC  
V
FB  
LOAD CURRENT (A)  
3608 TA01b  
3608 TA01a  
3608fa  
1
1234567...24

中文翻译

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