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LTC3616 PDF预览

LTC3616

更新时间： 2024-02-01 17:34:05
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
28页 432K
描述
6A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

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中文翻译

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LTC3616 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,
针数：24Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：8.49其他特性：OUTPUT VOLTAGE DOWN TO 0.6V
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 VJESD-30 代码：R-PQCC-N24
JESD-609代码：e3长度：5 mm
功能数量：1端子数量：24
最大输出电流：13.5 A封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN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）：NOT SPECIFIED
座面最大高度：0.8 mm表面贴装：YES
切换器配置：BUCK最大切换频率：4000 kHz
技术：CMOS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：NOT SPECIFIED
宽度：3 mmBase Number Matches：1

LTC3616 数据手册

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LTC3616  
6A, 4MHz Monolithic  
Synchronous Step-Down  
DC/DC Converter  
DESCRIPTION  
FEATURES  
The LTC®3616 is a low quiescent current monolithic syn-  
chronous buck regulator using a current mode, constant  
n
6A Output Current  
n
2.25V to 5.5V Input Voltage Range  
Low Output Ripple Burst Mode® Operation: I = 75μA frequency architecture. The no-load DC supply current  
n
Q
n
n
n
n
n
±±1 Output Voltage Accuracy  
in sleep mode is only 70μA while maintaining the output  
voltage(BurstModeoperation)atnoload,droppingtozero  
currentinshutdown.The2.25Vto5.5Vinputsupplyvoltage  
range makes the LTC3616 ideally suited for single Li-Ion  
as well as fixed low voltage input applications. 100% duty  
cyclecapabilityprovideslowdropoutoperation,extending  
the operating time in battery-powered systems.  
Output Voltage Down to 0.6V  
High Efficiency: Up to 951  
Low Dropout Operation: 100% Duty Cycle  
Programmable Slew Rate on SW Node Reduces  
Noise and EMI  
n
n
Adjustable Switching Frequency: Up to 4MHz  
Optional Active Voltage Positioning (AVP) with  
Internal Compensation  
The operating frequency is externally programmable up to  
4MHz, allowing the use of small surface mount inductors.  
For switching noise-sensitive applications, the LTC3616  
can be synchronized to an external clock at up to 4MHz.  
n
Selectable Pulse-Skipping/Forced Continuous/Burst  
Mode Operation with Adjustable Burst Clamp  
Programmable Soft-Start  
n
n
n
n
ForcedcontinuousmodeoperationintheLTC3616reduces  
noiseandRFinterference.Adjustablecompensationallows  
the transient response to be optimized over a wide range  
of loads and output capacitors.  
Inputs for Start-Up Tracking or External Reference  
DDR Memory Mode, I  
= 3A  
OUT  
Available in a 24-Pin 3mm × 5mm QFN  
Thermally Enhanced Package  
The internal synchronous switch increases efficiency and  
eliminates the need for an external catch diode, saving  
external components and board space. The LTC3616 is  
offered in a leadless 24-pin 3mm × 5mm thermally en-  
hanced QFN package.  
APPLICATIONS  
n
Point-of-Load Supplies  
n
Distributed Power Supplies  
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Portable Computer Systems  
n
DDR Memory Termination  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of  
Linear Technology Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 6580258, 5481178, 5994885, 6304066, 6498466, 6611131.  
n
Handheld Devices  
Efficiency and Power Loss  
TYPICAL APPLICATION  
vs Load Current  
100  
V
IN  
2.7V TO 5.5V  
90  
22μF  
s4  
SV  
IN  
PV  
80  
70  
60  
50  
40  
30  
20  
10  
0
1
IN  
RUN  
SRLIM/DDR  
TRACK/SS  
RT/SYNC  
0.1  
0.01  
0
220nH  
V
2.5V  
6A  
OUT  
LTC3616  
SW  
SGND  
PGND  
PGOOD  
ITH  
47μF  
s2  
MODE  
V
FB  
665k  
3616 TA01a  
V
V
V
= 2.8V  
= 3.3V  
= 5V  
IN  
IN  
IN  
210k  
V
= 2.5V  
10  
OUT  
1
100  
1000  
10000  
OUTPUT CURRENT (mA)  
3616 TA01b  
3616f  
1
1234567...28

中文翻译

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