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LTC3609EWKG#PBF

更新时间： 2024-01-29 11:43:12
品牌 Logo 应用领域
凌特 - Linear 信息通信管理开关
页数 文件大小 规格书
26页 419K
描述
LTC3609 - 32V, 6A Monolithic Synchronous Step-Down DC/DC Converter; Package: QFN; Pins: 52; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3609EWKG#PBF 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：3.54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：32 V最小输入电压：4 V
标称输入电压：15 VJESD-30 代码：R-PQCC-N52
JESD-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：6 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：BICMOS
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 mmBase Number Matches：1

LTC3609EWKG#PBF 数据手册

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LTC3609  
32V, 6A Monolithic  
Synchronous Step-Down  
DC/DC Converter  
FeaTures  
DescripTion  
TheLTC®3609isahighefficiency,monolithicsynchronous  
step-downDC/DCconverterthatcandeliverupto6Aoutput  
current from a 4V to 32V (36V 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
ꢀ 6AꢀOutputꢀCurrent  
n
ꢀ WideꢀV ꢀRangeꢀ=ꢀ4Vꢀtoꢀ32Vꢀ(36VꢀMaximum)  
IN  
n
ꢀ InternalꢀN-ChannelꢀMOSFETs  
ꢀ TrueꢀCurrentꢀModeꢀControl  
n
n
ꢀ OptimizedꢀforꢀHighꢀStep-DownꢀRatios  
n
ꢀ t  
ꢀ≤ꢀ100ns  
ON(MIN)  
n
n
n
n
n
n
n
n
n
n
n
ꢀ ExtremelyꢀFastꢀTransientꢀResponse  
ꢀ StableꢀwithꢀCeramicꢀC  
in V and V  
.
OUT  
IN  
OUT  
ꢀ 1ꢁꢀ0.6VꢀVoltageꢀReference  
Power Good Output Voltage Monitor  
Adjustable On-Time/Switching Frequency  
Adjustable Current Limit  
The LTC3609 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.  
Programmable Soft-Start  
Output Overvoltage Protection  
Optional Short-Circuit Shutdown Timer  
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 LTC3609 is available in a  
compact 7mm × 8mm QFN package.  
Low Shutdown I : 15µA  
Q
Available in a 7mm × 8mm 52-Pin QFN Package  
applicaTions  
n
Point of Load Regulation  
Distributed Power Systems  
n
L, LT, LTC, LTM, Linear Technology and the Linear logo 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  
EfficiencyꢀandꢀPowerꢀLossꢀ  
vsꢀLoadꢀCurrent  
HighꢀEfficiencyꢀStep-DownꢀConverter  
187k  
V
V
ON  
I
ON  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10000  
1000  
100  
10  
0.1µF OUT  
V
EFFICIENCY  
IN  
4V TO 32V  
RUN/SS  
V
IN  
10µF  
x3  
100pF  
LTC3609  
1.2µH  
V
2.5V  
6A  
OUT  
SW  
1000pF  
15.8k  
0.22µF  
100µF  
x2  
I
BOOST  
POWER LOSS  
TH  
SGND INTV  
CC  
30.1k  
9.53k  
FCB  
V
V
= 12V  
= 25V  
V
= 2.5V  
CC  
IN  
IN  
OUT  
EXTV = 5V  
4.7µF  
V
RNG  
PGND  
1
PGOOD  
0.01  
0.1  
1
10  
EXTV  
CC  
V
FB  
LOAD CURRENT (A)  
3609 TA01b  
3609 TA01a  
3609fb  
ꢀ
1234567...26

中文翻译

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